Hello World

setting debug port in the Tomcat and weblogic

2012-01-02T14:45:00.001+05:30

Tomcat
adding this stuff to your startup script so that you are always running tomcat in debug mode.

Open the startup script in (your_tomcat_home)/bin (WIN: startup.bat, UNIX: startup.sh)

Add the following lines at the first blank line in the file (around line 8)
WIN:

set JPDA_ADDRESS=8000
set JPDA_TRANSPORT=dt_socket

UNIX:

export JPDA_ADDRESS=8000
export JPDA_TRANSPORT=dt_socket

Change the execute line at the end to include jpda start
WIN:

call "%EXECUTABLE%" jpda start %CMD_LINE_ARGS%

UNIX:

exec "$PRGDIR"/"$EXECUTABLE" jpda start "$@"

Run the startup script when starting tomcat to run tomcat in debug mode

Weblogic
use the following points to enable the debug port

go to the domain in the weblogic
open the bin
edit the setDomainEnv.sh
past the JAVA_DEBUG="-Xdebug -Xnoagent -Xrunjdwp:transport=dt_socket,address=8087,server=y,suspend=n -Djava.compiler=NONE"
then execute the startWeblogic.sh

installing the SVN

2011-12-30T18:05:00.001+05:30

Use the following site to install svn plug-in

http://www.roseindia.net/projectmanagement/continuousintegration/subeclipse/subversion-eclipse.shtml

Proxy setting in the windows

1. Go to C:\Documents and Settings\user\Application data\subversion\

2. Find server file

3. Add the proxy setting

[global]

http-proxy-host = web-proxy.mycompany.com
http-proxy-port = 8080

http-proxy-username = <userID>

http-proxy-password = <password>

Installing and using the Maven

2011-12-30T11:53:00.001+05:30

Follow the following steps to create the Maven

1. Download the latest version of Maven from the following site

http://maven.apache.org/download.html#Installation

2. Extract the downloaded zip file

3. Create .bat file using the following line

a. @SET MAVEN_ARGS=%*

b. @SET JAVA_HOME=C:\HOMEWARE\sunjdk160_10

c. @SET JAVA_CMD="%JAVA_HOME%\bin\java.exe"

d. @SET M2_HOME=C:\HOMEWARE\mywork\apache-maven-3.0.3

e. @SET CPATH=%M2_HOME%\boot\plexus-classworlds-2.4.jar

f. %JAVA_CMD% -classpath %CPATH% -Dclassworlds.conf=%M2_HOME%\bin\m2.conf -Dmaven.home=%M2_HOME% org.codehaus.classworlds.Launcher %MAVEN_ARGS% -e

4. Name this batch file as “mvn.bat”

5. Then run the mvn –version for checking the installation

6. Change the JAVA_HOME and M2_HOME path as per the installation of java and maven

Setting the repository

1. Go to the path which is specified in the M2_HOME

2. Then open the conf folder

3. Find the setting.xml file

4. Find the <localRepository /> tag

a. Specify the repository path as per the convince

i. <localRepository>C:\HOMEWARE\maven-local-repo</localRepository>

5. If you’re in the office

a. find the available and accessible mirrors and fill in the <mirror />

b. configure all public repositories and plug-in repository in the <profile />

Using Maven

1. Download a project from the one of the famous site

a. svn checkout http://micrite.googlecode.com/svn/trunk/ micrite-read-only

2. Extract the zip file in the c:\

3. Copy our mvn.bat file in to the project file and run the following commands

a. mvn clean

b. mvn install

c. mvn eclips:eclipse

Calculate Bond Price in Java

2011-11-21T20:01:00.001+05:30

Calculate Bond Price in Java

We tried all the tools to calculate the BondPrice .finaly nothing achived with third party tools .
Luckly we found the following class to calculate the yeild price of the Bond. This class is more accurate
than any other tool.
java.text.DateFormat;import
java.text.SimpleDateFormat;import
java.util.Calendar;import
　
java.util.Date;public
Calendar maturity = Calendar.getInstance();
maturity.setTime(formatDate(
Calendar settlement = Calendar.getInstance();
settlement.setTime(formatDate(
Price price =
class Price {public static void main(String[] args) {"08/28/2012"));"02/29/2012"));new Price();try {double priceVa2 = price.tbondPrice( new Date(settlement.getTimeInMillis()), // settlementDate
new Date(maturity.getTimeInMillis()), // maturityDate
0.0865,
// rate
0.0895205173068493,
// yield
100.,
// redemption
2,
// frequency
0
// basis
);
System.
}
e.printStackTrace();
}
}
{
Calendar cal=
Date date1 =
out.println(priceVa2);catch (Exception e) {public static Date formatDate(String date)null;null; try
{
DateFormat formatter ;
formatter =
date1 = (Date)formatter.parse(date);
cal=Calendar.getInstance();
cal.setTime(date1);
}
e.printStackTrace();
}
}
{
{
{
paramCalendar1.add(5, -1);
}
{
paramCalendar2.add(5, 1);
}
{
paramCalendar2.add(5, -1);
}
}
new SimpleDateFormat("MM/dd/yyyy");catch(Exception e){return date1; private long days360(Calendar paramCalendar1, Calendar paramCalendar2, boolean paramBoolean)int i = paramCalendar1.get(5);int j = paramCalendar2.get(5);int k = paramCalendar1.get(2);int l = paramCalendar2.get(2);int i1 = paramCalendar1.get(1);int i2 = paramCalendar2.get(1);if (!(paramBoolean))if (i > 30)if ((j == 31) && (i > 30))else if (j == 31)else
{
{
paramCalendar1.add(5, -1);
}
{
paramCalendar2.add(5, -1);
}
}
i = paramCalendar1.get(5);
j = paramCalendar2.get(5);
}
{
{
{
d1 += paramDouble2 * Math.pow(d3, d2 * -1.0D);
d2 += 1.0D;
}
}
d1 -= paramDouble4;
}
{
d1 = 0.0D;
d1 = 100.0D * paramDouble1 / frequency;
}
Calendar SettlementDt = Calendar.getInstance();
SettlementDt.setTimeInMillis(paramDate1.getTime());
Calendar maturityDt = Calendar.getInstance();
maturityDt.setTimeInMillis(paramDate2.getTime());
Calendar prevCpnDt = Calendar.getInstance();
{
prevCpnDt.set(SettlementDt.get(1) + 1, maturityDt.get(2), maturityDt.get(5) - 1);
}
if (i > 30)if (j > 30)int i3 = (i2 - i1) * 12 + l - k;return (i3 * 30 + j - i);private double calculatedPrice(double paramDouble1, double paramDouble2, double paramDouble3, double paramDouble4, double paramDouble5, int paramInt1, int paramInt2)int j = paramInt1;double d3 = 1.0D + paramDouble1 / paramInt2;double d2 = paramDouble5;double d1 = paramDouble3 * Math.pow(d3, (j - 1 + d2) * -1.0D);if (paramDouble2 > 0.0D)for (int i = 1; i <= j; ++i)return d1;public double tbondPrice(Date paramDate1, Date paramDate2, double paramDouble1, double paramDouble2, double paramDouble3, int frequency, int paramInt2)throws Exceptiondouble d1;if (paramDouble1 == 0.0D)else {int j = 12 / frequency;if (((SettlementDt.get(1) + 1) % 4 != 0) && (maturityDt.get(2) == 2) && (maturityDt.get(5) == 29))else
{
prevCpnDt.set(SettlementDt.get(1) + 1, maturityDt.get(2), maturityDt.get(5));
}
}
}
{
prevCpnDt.set(maturityDt.get(1), maturityDt.get(2), maturityDt.get(5));
}
{
prevCpnDt.add(2, j * -1);
}
Calendar nextCpnDt = Calendar.getInstance();
nextCpnDt.set(prevCpnDt.get(1), prevCpnDt.get(2), prevCpnDt.get(5));
nextCpnDt.add(2, j);
{
l2 = days360(prevCpnDt, nextCpnDt,
l1 = days360(SettlementDt, nextCpnDt,
}
if (maturityDt.getTimeInMillis() < SettlementDt.getTimeInMillis()) {throw new Exception("The maturity date mast be greater then settlement date.");if (paramDouble3 < 0.0D)throw new Exception("The redemption price must be grater than zero.");if ((frequency != 1) && (frequency != 2) && (frequency != 3) && (frequency != 4) && (frequency != 6) && (frequency != 12))throw new Exception("The frequency must be 1, 2, 3, 4, 6, or 12.");if ((paramInt2 != 1) && (paramInt2 != 0)) {throw new Exception("The basis must be 1 or 0.");if (prevCpnDt.getTimeInMillis() > maturityDt.getTimeInMillis())while (prevCpnDt.getTimeInMillis() > SettlementDt.getTimeInMillis())int maxPeriod = (maturityDt.get(1) - prevCpnDt.get(1)) * 12 + maturityDt.get(2) - prevCpnDt.get(2);int i = maxPeriod / j;long l2;long l1;if (paramInt2 == 0)true);true);else
{
l2 = nextCpnDt.getTimeInMillis() - prevCpnDt.getTimeInMillis();
l1 = nextCpnDt.getTimeInMillis() - SettlementDt.getTimeInMillis();
}
{
d4 = (paramDouble3 + d1) / (paramDouble2 * d5 + 1.0D) - d3;
}
d4 = calculatedPrice(paramDouble2, d1, paramDouble3, d3, d2, i, frequency);
}
}
{
d += paramArrayOfDouble1[j] * Math.exp(-paramArrayOfDouble3[j] * paramArrayOfDouble2[j]);
}
}
{
d5 = 0.0D;
d5 = 100.0D * paramDouble1 / paramInt1;
}
Calendar localCalendar1 = Calendar.getInstance();
localCalendar1.setTimeInMillis(paramDate1.getTime());
Calendar localCalendar2 = Calendar.getInstance();
localCalendar2.setTimeInMillis(paramDate2.getTime());
}
Calendar localCalendar3 = Calendar.getInstance();
{
localCalendar3.set(localCalendar1.get(1) + 1, localCalendar2.get(2), localCalendar2.get(5) - 1);
}
double d2 = Double.parseDouble(""+l1) / Double.parseDouble(""+l2);double d3 = d1 * (1.0D - d2);double d4;if ((i == 1) || (i == 0))double d5 = d2 / frequency;else {return d4;public double priceOfBond(double paramDouble1, double paramDouble2, double paramDouble3, double[] paramArrayOfDouble1, double[] paramArrayOfDouble2, double[] paramArrayOfDouble3)double d = 0.0D;int i = paramArrayOfDouble1.length;for (int j = 0; j < i; ++j) {return (paramDouble1 * Math.exp(-paramDouble3 * paramDouble2) + d);public double yieldToMaturityFromPrice(Date paramDate1, Date paramDate2, double paramDouble1, double paramDouble2, double paramDouble3, int paramInt1, int paramInt2)throws Exceptiondouble d5;if (paramDouble1 == 0.0D)else {int k = 12 / paramInt1;if (localCalendar2.getTimeInMillis() < localCalendar1.getTimeInMillis())throw new Exception("The maturity date mast be greater then settlement date");if (paramDouble2 < 0.0D)throw new Exception("The price must be strictly positive.");if (paramDouble3 < 0.0D)throw new Exception("The redemption price must be grater than zero.");if ((paramInt1 != 1) && (paramInt1 != 2) && (paramInt1 != 3) && (paramInt1 != 4) && (paramInt1 != 6) && (paramInt1 != 12))throw new Exception("The frequency must be 1, 2, 3, 4, 6, or 12.");if ((paramInt2 != 1) && (paramInt2 != 0)) {throw new Exception("The basis must be 1 or 0.");if (((localCalendar1.get(1) + 1) % 4 != 0) && (localCalendar2.get(2) == 2) && (localCalendar2.get(5) == 29))else
{
localCalendar3.set(localCalendar1.get(1) + 1, localCalendar2.get(2), localCalendar2.get(5));
}
{
localCalendar3.set(localCalendar2.get(1), localCalendar2.get(2), localCalendar2.get(5));
}
{
localCalendar3.add(2, k * -1);
}
Calendar localCalendar4 = Calendar.getInstance();
localCalendar4.set(localCalendar3.get(1), localCalendar3.get(2), localCalendar3.get(5));
localCalendar4.add(2, k);
{
l2 = days360(localCalendar3, localCalendar4,
l1 = days360(localCalendar1, localCalendar4,
}
if (localCalendar3.getTimeInMillis() > localCalendar2.getTimeInMillis())while (localCalendar3.getTimeInMillis() > localCalendar1.getTimeInMillis())int l = (localCalendar2.get(1) - localCalendar3.get(1)) * 12 + localCalendar2.get(2) - localCalendar3.get(2);int j = l / k;long l2;long l1;if (paramInt2 == 0)false);false);else
{
l2 = localCalendar4.getTimeInMillis() - localCalendar3.getTimeInMillis();
l1 = localCalendar4.getTimeInMillis() - localCalendar1.getTimeInMillis();
}
{
d4 = yieldWith1Coupon(d5, paramDouble3, paramDouble2, d7, d6, paramInt1);
}
double d6 = l1 / l2;double d7 = d5 * (1.0D - d6);double d4;if ((j == 1) || (j == 0))else
{
{
d2 = 0.1D;
}
{
d2 *= 2.0D;
}
d4 = 0.5D * (d3 + d2);
{
}
{
d3 = d4;
}
double d3 = -1.0D;double d2 = paramDouble1;if (d2 == 0.0D)while (calculatedPrice(d2, d5, paramDouble3, d7, d6, j, paramInt1) > paramDouble2)for (int i = 1; i <= 200; ++i)double d1 = calculatedPrice(d4, d5, paramDouble3, d7, d6, j, paramInt1) - paramDouble2;if (Math.abs(d1) < 0.0001D) {break;if (d1 > 0.0D)else
{
d2 = d4;
}
d4 = 0.5D * (d3 + d2);
}
}
}
{
}
}
return d4;private double yieldWith1Coupon(double paramDouble1, double paramDouble2, double paramDouble3, double paramDouble4, double paramDouble5, int paramInt)double d3 = paramDouble2 + paramDouble1;double d1 = paramDouble3 + paramDouble4;double d2 = d3 / d1 - 1.0D;double d4 = paramDouble5 / paramInt;return (d2 / d4);

import

A small note on Nostro and Vostro

2011-10-14T11:47:00.001+05:30

A bank counts a nostro account with a credit balance as a cash asset in its balance sheet. Conversely, a vostro account with a credit balance (i.e. a deposit) is a liability, and a vostro with a debit balance (a loan) is an asset. Thus in many banks a credit entry on an account ("CR") is regarded as negative movement, and a debit ("DR") is positive - the reverse of usual commercial accounting conventions.
With the advent of computerised accounting, nostros and vostros just need to have opposite signs within any one bank's accounting system; that is, if a nostro in credit has a positive sign, then a vostro in credit must have a negative sign. This allows for a reconciliation by summing all accounts to zero (a trial balance) - the basic premise of double-entry bookkeeping.
Typical usage:Nostro accounts are mostly commonly used for currency settlement, where a bank or other financial institution needs to hold balances in a currency other than its home accounting unit.
For example: First National Bank of A does some transactions (loans, foreign exchange, etc.) in USD, but banks in A will only handle payments in AUD. So FNB of A opens a USD account at foreign bank Credit Mutuel de B, and instructs all counter-parties to settle transactions in USD at "account no. 123456 in name of FNBA, at CMB, X Branch". FNBA maintains its own records of that account, for reconciliation; this is its nostro account. CMB's record of the same account is the vostro account.
Now, FNBA sells AUD1,000,000 to C (a counterparty who has an AUD account with FNBA, and a USD account with CMB) for a net consideration of USD2,000,000.

FNBA will make the following entries in its own accounting system:

(Internal) FX AUD trading account	1,000,000 DR	AUD Account in name of C	1,000,000 CR
USD Nostro at CMB (FNBA's nostro)	2,000,000 DR	(Internal) FX USD trading account	2,000,000 CR

Over at CMB, they record the following transaction:

USD Account in name of C

2,000,000 DR

USD Account in name of FNBA (CMB's vostro)

2,000,000 CR

Grouping tags based on Condition +XSLT

2011-06-03T16:37:00.003+05:30

Here we are going to discus about how to group the tags under some condition in xslt. I will explain this by taking the Employer example.
Before this we need to know some of the xslt functions and template calling .

generate-id()

key()
<xsl:key>
<xsl:template>

Suppose we have one xml which is having many number of branches in a company .Each branch has many number of employees. The xml looks like this.

<?xml version="1.0" ?>

<TeamName>Sales</TeamName>

<Surname>Shibob</Surname>

</Employee>

<TeamName>Sales</TeamName>

<Surname>Shibob</Surname>

</Employee>

<TeamName>Sales</TeamName>

</Employee>

<TeamName>Finance</TeamName>

<Surname>Smith</Surname>

</Employee>

<TeamName>Finance</TeamName>

<Name>Penny</Name>

</Employee>

<TeamName>Finance</TeamName>

<Name>Penny</Name>

</Employee>

</Employees>

To do this

· First declare the one key variable

<xsl:key name=" keyEmployeeID" match="Employee" use=" EmployeeID"/>

· Then write a for loop for iterating the Employee set

<xsl:for-each select="Employee”>

· Then generate and id for each key value of employes

<xsl:for-each select="…………generate-id(key('keyEmployeeID', EmployeeID)[1])]">

· Assign all this ids in to a array

<xsl:for-each select="tEmployee[generate-id(.) = generate-id(key('keyEmployeeID', EmployeeID)[1])]">

Valid XSD format values

2011-06-03T15:24:00.000+05:30

xs:datetime
Valid xs:datetime value is 2005-05-27T14:11:00.943Z but the following values are not the valid one

2005-05-27 14:11:00.943Z (missing date and time separator "T"),
2005-05-27T14:11:00.943 (missing time zone)
2005-05-27 14:11:00.943 (missing time separator and time zone).

xs:date
2005-05-27Z is a valid xs:date value but 2005-05-27 is not since no time zone is specified

xs:boolean
True is not a valid xs:boolean valied.It sholud be'true'.similarly 'False' is not valid value,it is 'false'

xs:decimal

value 0.12345678 but not 12E-4.to convert scientific number in to the decimal format you neet to use the following template convertSciToNumString (which is published in the previous post)

XStream - Features

2011-06-03T15:03:00.000+05:30

XStream is a simple library to serialize objects to XML and back again.

Features

Ease of use. A high level facade is supplied that simplifies common use cases.
No mappings required. Most objects can be serialized without need for specifying mappings.
Performance. Speed and low memory footprint are a crucial part of the design, making it suitable for large object graphs or systems with high message throughput.
Clean XML. No information is duplicated that can be obtained via reflection. This results in XML that is easier to read for humans and more compact than native Java serialization.
Requires no modifications to objects. Serializes internal fields, including private and final. Supports non-public and inner classes. Classes are not required to have default constructor.
Full object graph support. Duplicate references encountered in the object-model will be maintained. Supports circular references.
Integrates with other XML APIs. By implementing an interface, XStream can serialize directly to/from any tree structure (not just XML).
Customizable conversion strategies. Strategies can be registered allowing customization of how particular types are represented as XML.
Error messages. When an exception occurs due to malformed XML, detailed diagnostics are provided to help isolate and fix the problem.
Alternative output format. The modular design allows other output formats. XStream ships currently with JSON support and morphing

converting scientific number to Number - XSLT

2011-05-31T14:52:00.001+05:30

To conver BigDecimal number in to the normal number in xslt ,we need to write a new template .
then call this template in the following way
xsl:call-template name="convertSciToNumString"><xsl:with-param name="inputVal" select="percentAmmo" /></xsl:call-template>Template is
<xsl:template name="convertSciToNumString">
<xsl:param name="inputVal" select="0" />
<xsl:variable name="max-exp">
<xsl:value-of
select="'0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000'" />
</xsl:variable>
<xsl:variable name="numInput">
<xsl:value-of select="translate(string($inputVal),'e','E')" />
</xsl:variable>

<xsl:variable name="numMantisa">
<xsl:value-of select="number(substring-before($numInput,'E'))" />
</xsl:variable>

<xsl:variable name="numExponent">
<xsl:choose>
<xsl:when test="contains($numInput,'E+')">
<xsl:value-of select="substring-after($numInput,'E+')" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="substring-after($numInput,'E')" />
</xsl:otherwise>
</xsl:choose>
</xsl:variable>

<xsl:variable name="numCoefficient">
<xsl:choose>
<xsl:when test="0 > $numExponent">
<xsl:text>0.</xsl:text>
<xsl:value-of select="substring($max-exp, 1, -number($numExponent)-1)" />
<xsl:text>1</xsl:text>
</xsl:when>
<xsl:when test="$numExponent > 0">
<xsl:text>1</xsl:text>
<xsl:value-of select="substring($max-exp, 1, number($numExponent))" />
</xsl:when>
<xsl:otherwise>
1
</xsl:otherwise>
</xsl:choose>
</xsl:variable>
<xsl:variable name="result">
<xsl:value-of select="number($numCoefficient) * number($numMantisa)" />
</xsl:variable>
<xsl:choose>
<xsl:when test="$result = 'NaN'">
<xsl:value-of select="$numInput" />
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$result" />
</xsl:otherwise>
</xsl:choose>
</xsl:template>

Cloud Computing -VMForce

2011-05-31T14:31:00.002+05:30

Cloud computing refers to the use of networked infrastructure software and the capacity to provide resources to users in an on-demand environment. With cloud computing, information is permanently stored in servers on the Internet and cached temporarily on desktop computers, notebooks, handhelds, or other client devices. In this model, often referred to as “utility computing,” users can access common business applications online from virtually any end user device, on a pay-per-use basis.

By design, cloud computing is scalable and elastic, offering IT departments a way to increase capacity or add capabilities on demand, without investing in new infrastructure, training new personnel, or licensing new software.

VMforce

The first enterprise cloud computing platform for Java developers . This new service will provide enterprise developers with the powerful combination of the Java programming language, the Spring framework, and the Force.com cloud platform. With VMforce, Java developers will be able to build and deploy enterprise apps that are instantly social and available on mobile devices in real time, and that seamlessly leverage Force.com’s cloud database and pre-built platform elements, including reporting and analytics, search, web services API, and application security services. And all of these apps will run on salesforce.com’s trusted global cloud computing infrastructure

Categories of Cloud

When one digs more into the Cloud, there are many types and models of Cloud like Private Cloud, Public Cloud, Hybrid Cloud, Community Cloud, Enterprise Cloud, Infrastructure as a service (IAAS), Platform as a service (PAAS), Software as a Service (SAAS), Business as a service (BAAS), Gaming as a service (GAAS), BPaas, Haas…or easier to say…Anything as a service(XAAS).

Cloud computing is broken down in to few different categories based on the type of service provided

• SaaS (Software as a Service) is the category of cloud computing in which the main resources available as a service are software applications

• PaaS (Platform as a Service) is the category/application of cloud computing in which the service providers deliver a computing platform or a solution stack to their subscribers over the internet.

Corporate Action

2010-07-29T16:18:00.003+05:30

                                       When any public company issued some securities and it initiate an even regarding that securities is called Corporate Action. Dividend is one of the types of CA.
The primary reasons for CA
• Return profit to the shareholders
• Influences the share prices
• Corporate restructuring-
Ways of announcing CA
Dividend: Here dividend is the classical example to CA. Company will distribute the profit to the entire share holder. Equity price in the secondary market get adjust because of this CA but as point of the company it is positive sentiment in the secondary market for their equity.
Bonus: company performs well and they want to share the profit to the share holders in the form equity. Equity price will adjust in the market because of this CA but company prospective liquidity will increase in the secondary market. There is an issue here, some share holder are not qualified to take the bonus so they will accrue the loss.
Stock splitting: increase or decrease the number of shares in the market to increase or decrease the price of the stock market
Spinoffs: Are an example of a corporate action where a company breaks itself up in order to focus on its core competencies.
      Following List shows how many ways of announcing CA

Cash Dividend,
Optional Dividend,
Stock Dividend,
Stock Split,
Spin Off,
Acquisition,
Rights Offering,
Debt Redemption,
Bonds Exchange,
Bankrupts,
Debt Repurchase,
Reclassification,
Buyback Offer,
Pay in Kind.

An Option -One of The Derivative

2010-07-21T16:03:00.000+05:30

An option is a contract to buy or sell a specific financial product officially known as the option's underlying instrument or underlying interest.It has an expiration date. When an option expires, it no longer has value and no longer exists.
Options come in two varieties, calls and puts, and you can buy or sell either type.
Buying and Selling
If you buy a call, you have the right to buy the underlying instrument at the strike price on or before the expiration date. If you buy a put, you have the right to sell the underlying instrument on or before expiration. In either case, as the option holder, you also have the right to sell the option to another buyer during its term or to let it expire worthless.

When you sell a call as an opening transaction, you're obligated to sell the underlying interest at the strike price, if you're assigned. When you sell a put as an opening transaction, you're obligated to buy the underlying interest, if assigned.
At a Premium
When you buy an option, the purchase price is called the premium. If you sell, the premium is the amount you receive. The premium isn't fixed and changes constantly - so the premium you pay today is likely to be higher or lower than the premium yesterday or tomorrow.

Investment Banking

2010-07-21T15:47:00.000+05:30

Raising the capital to the Corporation or Government by underwriting and acting as agent in the issuance of the securities.it also assists companies involved in mergers and acquisitions, divestitures.
An investment Bank is spited into so called Front-office ,middle office and Back Office.
Front-Office deals the sales and trading,research on the market
Middle-Office deals with the Risk Management,Corporate Treasury ,Financial Control and Corporate sategy
Back-Office deals with the Operation and technologies
For Corporations investment bankers offers when and how to place their investments in the market .Investment Bank mainly to satisfy both issuers and investor.Here investors are expecting the high returns on their investments .In other side Issuers are expecting more capital with lowest interest rates for a long time.

Forex Markets - Trade Life Cycle

2010-07-21T15:42:00.000+05:30

Trading Position
1.When you buy / sell a currency , you are said to hold a Position
2.Position denotes your size of holding in that currency
3.When you buy – “going long or overbought”
4.When you sell – “going short or oversold”
5.If you have no position – “ being square”
FORWARD CONTRACT :
A contractual commitment to buy or sell a specified amount of
foreign exchange for a specified price (forward exchange rate )
at a specified future date (maturity of contract ).
Premium/ Discount :
.Forward exchange rates can be higher or lower than the applicable spot rate.
.The difference between spot rate and forward rate is called ‘swap premium or discount’
.If the base currency interest rate is higher – discount – forward rate is lower
.If the base currency interest rate is lower – premium – forward rate is higher
What is a Swap?
1 Exchange of two currencies and their re-exchange later
2 A swap is a lending and borrowing transaction achieved through the foreign exchange market.
3 Instead of lending(borrowing) and borrowing(lending), we just sell(buy) and buy(sell) in the forex market.
Different Financial Markets
Listed Market –
. Exchanges where an Auction method is used at a physical location. (e.g.) The New York Stock Exchange (NYSE)
. Exchanges where trade execution is automated using Order Matching Systems
. All the exchanges are registered with the SEC / SEBI.
. e.g. stock markets
Over-the-Counter Market (OTC, Unlisted) –
. A negotiated market without a physical location where transactions are done via telecommunications.
. e.g. Currency markets
OTC Markets
. Currency Markets are traded entirely OTC
. OTC price information is either published periodically in paper form, disseminated over telephone lines, or displayed real-time electronically

short selling

2010-07-21T15:31:00.000+05:30

short selling (also known as shorting or going short) is the practice of selling assets, usually securities that have been borrowed from a third party (usually a broker) with the intention of buying identical assets back at a later date to return to the lender (expecting a bearish market)

short seller hopes to profit from a decline in the price of the assets between the sale and the repurchase, as the seller will pay less to buy the assets than the seller received on selling them
Naked Short selling
Naked short selling, or naked shorting, is the practice of short-selling a financial instrument without first borrowing the security or ensuring that the security can be borrowed, as is conventionally done in a short sale.

The transaction generally remains open until the shares are acquired by the seller, or the seller's broker, allowing the trade to be settled. If it is not settled the trade is considered to have “failed to deliver”
Mechanism of short selling..
1.The investor instructs the broker to sell the shares and the proceeds are credited to his broker's account.
2.Upon completion of the sale, the investor has 3 days (in the US) to borrow the shares. If required by law, the investor first ensures that cash or equity is on deposit with his brokerage firm as collateral for the initial short margin requirement
3.The investor may close the position by buying back the shares (called covering). If the price has dropped, he makes a profit. If the stock advanced, he takes a loss.
4.Finally, the investor may return the shares to the lender or stay short indefinitely.
5.At any time, the lender may call for the return of his shares e.g. because he wants to sell them. The borrower must buy shares on the market and return them to the lender (or he must borrow the shares from elsewhere). This is called ‘called away’ This happens when many people short sells a particular security

Hedge Accounting

2010-07-21T15:28:00.001+05:30

A method of accounting where entries for the ownership of a security and the opposing hedge are treated as one. Hedge accounting attempts to reduce the volatility created by the repeated adjustment of a financial instrument's value, known as marking to market. This reduced volatility is done by combining the instrument and the hedge as one entry, which offsets the opposing movements.

Hedge accounting modifies the usual accounting treatment of a hedging instrument and/or a hedged item to enable gains and losses on the hedging instrument to be recognised in the income statement in the same period as offsetting losses and gains on the hedged item. This is a matching concept. A pre-requisite for hedge accounting is that a hedging instrument, normally a derivative, is designated as an offset to changes in the fair value or cash flows of a hedged item.

Why hedging and hedging accounting
1.Most business activity involves risks and uncertainties, and it is necessary of elaborating effective financial strategies in order to manage these risks and uncertainties.
2.One way in which this can be done is to enter into transactions that expose the entity to risk and uncertainty that fully or partially offsets one or more of the entity’s other risks and uncertainties, transactions known as ‘hedges’.
3.The instrument acquired to offset risk or uncertainty is known as ‘hedging instrument’ and the risk or uncertainty hedged is known as ‘hedged item’.
4.When certain criteria are met, International Accounting Standard (IAS) 39 “Financial instruments: Recognition and Measurement” permits entities to apply special accounting treatment, so-called ‘hedge accounting‘.
Types of Hedge Accounting
1.Cash flow Hedging
2.Fair Value Hedging
3.Hedge of a Net Investment

Electronic Clearing System

2010-07-21T15:24:00.000+05:30

Coverage
Bulk payment transaction like periodic payments defined as “User”

The transactions to move from a single User source to a large number of Destination Account Holders

The credit instructions from the User to the Destination Account Holders would be on media (tape/floppy/CD/pen drive) and would form the basis for the Sponsor Bank to debit the User’s account and the Destination Bank branches to credit the beneficiaries' Accounts

Such other payment transactions involving a single debit to a User’s account at one bank and multiple credits to a large number of beneficiaries at many banks to be specified by National Clearing Cell (NCC) / Clearing House (CH) after ascertaining the level of infrastructure available at the Service/Main branches of member banks.

ECS Process Cycle
1.Guidelines for Input Preparation and Input Submission ( User Institution -> Sponsor Bank -> Clearing House) )
2.Record layout of inward data for destination banks ( Clearing House -> Destination Banks)
3.Record layout of return data ( Destination Banks -> Clearing house)
4.Record layout of Final Output Data after return processing (Clearing House -> Sponsor Bank -> User Institution)

Return of processed output
If a Destination Bank branch is not in a position to credit a particular transaction for reasons like “Account closed/transferred”, “No such Accounts”, “Account description does not tally”, etc., it should report the same with a Return Memo . The same would be forwarded to its Service Branch/Main Branch on day-1

Why i choose this Corporate and Investment Banking domain rather than Retail Banking

2010-06-07T13:51:00.000+05:30

I started my career with Retail Banking Domain.Recently i moved to the one more challenging domain as Corporate and Investment Banking.
Why i choose this Corporate and Investment Banking domain ?

The Investment banking business is very far removed from the world of Retail Banking.

Investment banking business includes Capital Markets and is very highly dynamic. Billions of dollars are being traded at any given point of time.

Investment banks hire only the best professionals to build and support all their applications they use.

The changing business environment provides the drive and challenge for the IT teams to enhance systems and to deliver quality products and solutions every time.

One of the resource for investing-Bonds

2010-05-27T17:43:00.004+05:30

A company needs funds to expand into new markets while governments need money for everything
from infrastructure to social programs. The problem large organizations run into is that they typically need far more money than the average bank can provide. The solution is to raise money by issuing bonds (or other debt instruments) to a public market.

Really, a bond is nothing more than a loan of which you are the lender. The organization that sells a bond is known as the issuer. You can think of it as an IOU given by a borrower (the issuer) to a lender (the investor).

The interest rate is often referred to as the coupon. The date on which the issuer has to repay the amount borrowed, known as face value (also known as the par value or principal), is called the maturity date. Bonds are known as fixed-income.

When a bond's price trades above the face value it is said to be selling at a premium. When a bond sells below face value, it is said to be selling at a discount.

When bond investors refer to yield, they are usually referring to yield to maturity.

Types of Bonds

Government Bonds
Municipal Bonds
Corporate Bonds
Zero Coupon Bonds

Some of the important points regarding the Bonds

Bonds are just like IOUs. Buying a bond means you are lending out your money.
Stocks are equity; bonds are debt.
Issuers of bonds are governments and corporations.
A bond is characterized by its face value, coupon rate, maturity, and issuer.
Yield is the rate of return you get on a bond.
When price goes up, yield goes down and vice versa.

Some of the usefull links

InvestingInBonds.com
http://www.investopedia.com/university/bonds/

Different types of Inner Classes

2010-05-20T17:59:00.000+05:30

In java we have a option to write a class in another class.Such a class is called the Inner class.
check the following diagram ,it will explain the how the class architecture in the Java

These are categorised into Static and non-static inner classes.Under non-static inner classes we have inner classes ,Local inner classes and Anonymous Classes .Objects that are instances of an inner class exist within an instance of the outer class
and has direct access to the methods and fields of its enclosing instance
Local inner class
we can declare a inner class with in a body of a method
Syntax of creating an object for inner class
OuterClass.InnerClass innerObject = outerObject.new InnerClass();
Anonymous inner class
we can also declare a inner class with out a name with in the body of a method.
ex:DriverManager.getConnection() method is using this concept only.
Static inner classes
As with class methods and variables, a static nested class is associated with its outer class.
Syntax of creating an object for Static inner class
OuterClass.InnerClass innerObject = new OuterClass.new InnerClass();

Ex
class OuterClass
{
   ------
   -------
       class InnerClass
          {
             -------
             -------
          }
}

rowNum()

2010-03-03T17:35:00.000+05:30

rowNum() function always give the no of records fetched from the table but not the a row number in the table

Example :
select * from table where rowNum() =10;
above query will not return any thing

setting STRICT_QUOTE_ESCAPING in catilina.sh file

2010-03-02T10:31:00.000+05:30

JAVA_OPTS="$JAVA_OPTS -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -Dorg.apache.jasper.compiler.Parser.STRICT_QUOTE_ESCAPING=false"

My points on Websphere Message Broker Nodes

2010-01-20T11:15:00.006+05:30

Spring :For the Beginners

2010-01-08T12:40:00.002+05:30

My advice to beginners on the spring use the following url http://www.springbyexample.org/examples/index.html

It is providing very good explanation about the different components in Spring world.

spring with Web Services is my favorite topic .

2009-12-30T11:12:00.002+05:30

My points on Websphere Message Broker

2009-12-30T09:55:00.006+05:30

http://docs.google.com/present/edit?id=0AVqRcA4NAu8bZGc5MmJqc18xNmNiaDZtYzg3&hl=en

WebSphere Message Broker (WMB) is IBM's information broker from the WebSphere product family that allows business information to flow between disparate applications across multiple hardware and software platforms. Business rules can be applied to the data flowing through the message broker to route and transform the information. The product can be considered to be an Enterprise Service Bus providing connectivity between disparate applications.
The WebSphere Message Broker Toolkit enables developers to graphically design message flows and related artifacts. Once developed, these resources can be packaged into a broker archive (BAR) file and deployed into the runtime environment. At this point, the broker is able to continually process messages according to the logic described by the message flow.WebSphere Message Broker flows can be used in a Service Oriented Architecture, and if properly designed by Middleware Analysts, integrated into event-driven SOA schemas, sometimes referred to as SOA 2.0.

Broker nodes available

A developer can choose from many pre-designed broker nodes. Nodes have different purposes. Some nodes map data from one format to another (for instance, Cobol or PL/I Copybook to canonical XML). Other nodes evaluate content of data and route the flow differently based on certain criteria.
Node types

There are many types of node that can be used in developing message flows; the following node transformation technology options are available:

Extended Structured Query Language (ESQL)
Graphical Message Mapping
eXtensible Stylesheet Language Transformations (XSLT)
JavaCompute (as of version 6)
WebSphere Transformation Extender (formerly known as Ascential DataStage TX, DataStage TX and Mercator Integration Broker) is available as a separate licensing option
PhpCompute (as of version 6.1.0.3)

Creating a broker in Windows

\Program Files\IBM\MQSI\6.1\bin>mqsiprofile

\Program Files\IBM\MQSI\6.1\bin>mqsicreatebroker -i < user Name > -a -q -s < User server Queue Manager > -n < Database Instance >

Ex:

D:\Program Files\IBM\MQSI\6.1\bin>mqsicreatebroker WBRK_BROKER -i mohanrao -a qwer*098 -q WBRK_QM -s WBRK_UNS_QM -n DEFBKD61

Creating Configure Manager In Windows

\Program Files\IBM\MQSI\6.1\bin>mqsicreateconfigmgr CONF_MGR -i mohanrao -a qwer*098 -q QM_evolvus_lap

Start the Component

\Program Files\IBM\MQSI\6.1\bin>mqsistart CONF_MGR

\Program Files\IBM\MQSI\6.1\bin>mqsicreateaclentry CONF_MGR -f \myList

Creating Queue

runmqsc ----------it will start a session for given Queue Manger

DEFINE qlocal ()

Some of the Major Calls for MQ

MQCONN- to connect the Queue

MQCONNX-it will connect and also open the Queue

MQDISC- to Define A description about the Queue

MQOPEN- To Open the Connected Queue
MQCLOSE - To Close The Opened Queue
MQPUT- To insert/place the message in to the Opened Queue

MQGET - To retrieve the Message From The Opened Queue

MQBEGIN- To start the transaction Opened Queue

MQCMIT- To Commit the started transaction

Command Line Deployment

mqsideploy -b -e -bar
name>

Example Java Classes For MQ

import com.ibm.mq.*;

public class Put {
public static void main (String args[]) throws Exception
{
MQQueueManager qm = new MQQueueManager("QM");
MQQueue queue = new MQQueue(qm,"AQ",MQC.MQOO_OUTPUT,"","","");
MQMessage msg = new MQMessage();
msg.writeString(args[0]);

queue.put(msg);
queue.close();
qm.disconnect();

}
}

import com.ibm.mq.*;

public class Get{

public static void main (String args[]) throws Exception

{

MQQueueManager qm = new MQQueueManager("QM");

MQQueue queue = new MQQueue(qm,"LQ",MQC.MQOO_INPUT_SHARED,"","","");

MQMessage msg = new MQMessage();

queue.get(msg);

System.out.println(msg.readString( msg.getMessageLength() ));

//queue.close();

//qm.disconnect();

}

Find The Following Documents

http://docs.google.com/fileview?id=0B1qRcA4NAu8bZWFmNTM5NGMtMTRkMC00ODk2LThiOTItNzY1NzU5MDBjZTJi&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bMDU0NzAxNjUtYWEwYS00NGZlLTk2MjgtYjE0ZDZhNTkzOTZk&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bOGExOGUzNTQtZjllOS00ZWIyLWJlODktNGViOWY3NDgwMjQx&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bNjFlZjc2YmEtMTRkZS00ZDdlLTgzYWEtNjBkODIwYWFhZjky&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bY2JmYWNjMGUtNjg0Yi00NzBhLTg4NDUtNGI1ODc0OTE2NGRh&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bZTY4OTg2MmEtNDBiNy00MTQwLTlkODMtZWNhZWVhZmI4ODE3&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bY2E1MjA2ZGQtOGE0OC00N2ZiLTk0MDMtNTJiOGI5OTcyZGJk&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bMmY3N2FhMjEtYmU2Ni00YTBkLTgzNTktMjRjNjQ2OGE3NWU2&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bYjEwN2M2ZjEtMDU1OC00ZWZlLWIzZGYtZDUzMThkMTU4Mjk0&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bNTEwZDU0MGUtY2JhOC00Yjc5LWE5ZDMtYTUxYTRiNTBmM2U3&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bNWVjYmNiYzktOWRjNi00ZjE1LTg1OTMtZjQ0NGZmMGUyNjVl&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bZTY3ZThkOGEtNDVkZi00YWRhLTkyYjAtMzgzZTg5M2M4ZjM5&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bY2I1YjVhZTItOTRiYS00NWRiLWI5NjctN2UzZGRjMmQ3ZDll&hl=en
http://docs.google.com/fileview?id=0B1qRcA4NAu8bZTcxZTkxMjMtMDZhNy00NjgyLTlkODAtMjkyOTNiMjU5Y2Jm&hl=en

Creating Database Connection Pool in Tomcat 5.0 and Tomcat 5.5 for MySQL and Java

2009-12-10T16:12:00.002+05:30

This tutorial gives you a close look at Jakarta Commons Database Connection Pool (DBCP) in Tomcat 5.0 and Tomcat 5.5. DBCP is the database connection pooling technology built into the popular open-source Tomcat servlet engine. Because it’s included with Tomcat, you don’t need to download or install any files or libraries.

However, depending on which database you are connecting to, you will have to download the appropriate JDBC driver. In this example we are connecting to MySQL. Normally, to deploy an application to the Tomcat servlet engine, you just copy the application’s WAR file, or deployment directory, to the Tomcat webapps directory. However, to configure DBCP for your application, you need to do a bit more work: you need to add the application to the Tomcat server configuration file conf/server.xml.

To do this, you need to add a new entry to the Tomcat server.xml file. Open the server.xml file with your favorite editor and look for the Tomcat Root Context. You need to add the entry in the correct part of the server.xml file. For example, you can add it after the ROOT context and before the examples context, as in the snippet shown here:

factory

org.apache.tomcat.dbcp.dbcp.BasicDataSourceFactory

maxActive100
maxWait100
usernamescott
passwordtiger

driverClassName
org.gjt.mm.mysql.Driver

url
jdbc:mysql://localhost:3306/mydb?autoReconnect=true

reloadable="true" crossContext="true">

prefix="localhost_examples_log." suffix=".txt" timestamp="true"/>

The preceding example shows how to configure DBCP for an application called myapp. The first entry inside the element is the declaration. The declaration declares a javax.sql.DataSource and binds it to the JNDI name jdbc/mydb. The element and the nested elements within specify the DBCP parameters for the application’s database connection pool. We’ve already discussed the maxActive and maxWait parameters. The driverClassName and url parameters are standard JDBC connection parameters.

Note The value for the factory parameter will vary based on the Tomcat distribution. Tomcat 5.0 and earlier versions used the Jakarta Commons DBCP library. Starting with Tomcat 5.5, the DBCP library has been changed from the Commons version to a Tomcat-specific library. If you want to double check that the value you use is correct, check the Tomcat JAR files in Tomcat’s common\lib directory, find the BasicDataSourceFactory class, and use the fully qualified class name of the class you find.

The next code excerpt shows how to obtain a connection from the previous connection pool. First, you use JNDI to look up a javax.sql.DataSource interface, and then you ask that interface for a connection. When you’ve finished with the connection, you close it and return it to the pool for reuse. Closing the connection doesn’t actually close the underlying physical connection; it just returns the connection to the pool.

javax.naming.InitialContext context = new InitialContext();
// Look up the data source
javax.sql.DataSource dataSource =
(javax.sql.DataSource)context.lookup ("java:comp/env/jdbc/mydb");
// Get a connection from the pool
java.sql.Connection conn = dataSource.getConnection();
// ...Use the connection...
// Close the connection to return it to the pool
conn.close()

Hashmap and HashTable

2009-11-19T13:17:00.000+05:30

Hash map allows null values but hash table accept the null values but it gives runtime exception

some important points on static and non static method overriding

2009-11-19T13:07:00.002+05:30

a static method (in a subclass) may hide another static method (in a superclass)
a static method (in a subclass) cannot hide a non-static method (in a superclass)
a non-static method (in a subclass) may override another non-static method (in a superclass)
a non-static method (in a subclass) cannot override a static method (in a superclass)

different types of Synchronization

2009-11-11T18:56:00.001+05:30


Types of Synchronization: 1)Method level Synchronization: A method can be Synchronized by adding a perfix word Synchronize . Here we have Parametrised Synchronization options also. example: public Synchronize void foo(){} 2)Block level Synchronization: A block can be Synchronized by adding a perfix word Synchronize . Here we have Parametrised Synchronization options also. Synchronize { }

Types of action clases in stuts

2009-11-11T18:26:00.000+05:30

There are fine different types of actions in the struts

i) Forward Action (to forward a request to another resource in your
application)

ii) Include Action ( To include some action )

You Might be wondering what the difference between Forward Action and Include
Action so here it is : The difference is that you need to use the IncludeAction
only if the action is going to be included by another action or JSP. Use
ForwardAction to forward a request to another resource in your application such
as a Servlet that already does business logic processing or even another JSP
page.

iii) Dispatch Action ( to group related actions into one class)

iv) Lookup Dispatch Action (is useful if the method name in the Action is not
driven by its name in the front end but by the Locale independent key into the
resource bundle.)

The difference between LookupDispatchAction and DispatchAction is that the
actual method that gets called in LookupDispatchAction is based on a lookup of a
key value instead of specifying the method name directly.

v) Switch Action (The SwitchAction class provides a means to switch from a
resource in one module to another resource in a different module. SwitchAction
is useful only if you have multiple modules in your Struts application. The
SwitchAction class can be used as is without extending.)

Implicit Objects in jsp

2009-11-11T18:14:00.002+05:30

Variable	Class	Description
`application`	`javax.servlet. ServletContext`	The context for the JSP page's servlet and any Web components contained in the same application. See Accessing the Web Context.
`config`	`javax.servlet. ServletConfig`	Initialization information for the JSP page's servlet.
`exception`	`java.lang. Throwable`	Accessible only from an error page. See Handling Errors.
`out`	`javax.servlet. jsp.JspWriter`	The output stream.
`page`	`java.lang. Object`	The instance of the JSP page's servlet processing the current request. Not typically used by JSP page authors.
`pageContext`	`javax.servlet. jsp.PageContext`	The context for the JSP page. Provides a single API to manage the various scoped attributes described in Using Scope Objects . This API is used extensively when implementing tag handlers (see Tag Handlers).
`request`	subtype of `javax.servlet. ServletRequest`	The request triggering the execution of the JSP page. See Getting Information from Requests.
`response`	subtype of `javax.servlet. ServletResponse`	The response to be returned to the client. Not typically used by JSP page authors.
`session`	`javax.servlet. http.HttpSession`	The session object for the client. See Maintaining Client State.

Difference between ServletContext and ServletConfig

2009-11-11T18:13:00.000+05:30

ServletContext Defines a set of methods that a servlet uses to communicate with its servlet container.
ServletConfig is a servlet configuration object used by a servlet container used to pass information to a servlet during initialization. All of its initialization parameters can ONLY be set in deployment descriptor.
The ServletContext object is contained within the ServletConfig object, which the Web server provides the servlet when the servlet is initialized.
You can specify param-value pairs for ServletContext object in tags in web.xml file.
The ServletConfig parameters are specified for a particular servlet and are unknown to other servlets.
The ServletContext parameters are specified for an entire application outside of any particular servlet and are available to all the servlets within that application.

what is the use of immutable String class in java?...

2009-11-11T18:09:00.003+05:30


Immutable means not changeable. when a string is declared and initiated with some values. Afterwards whenever we will concat that string or change that string. if we r going to add more characters in that string object. it will not allow dynamic size change. to cater such problem when any change will occur in string object the object will be recreated and previous object will be destroyed and new will be created with new size to accomodate change. thats y strings are immutable in java. Mutable Objects: When you have a reference to an instance of an object, the contents of that instance can be altered Immutable Objects: When you have a reference to an instance of an object, the contents of that instance cannot be altered

what is Factory Method

2009-11-11T18:05:00.003+05:30

Factory method is just a fancy name for a method that instantiates objects. Like a factory, the job of the factory method is to create -- or manufacture -- objects.

Simple example for revesing a string

2009-11-11T18:05:00.000+05:30

public static void main(String[] args) {
String text="text";
for(int i=text.length();i>0;i--){
//System.out.print(text.substring(i-1,i));
System.out.print(text.toCharArray()[i-1]);
}
}

My marriage invitation

2009-10-01T16:20:00.002+05:30

loading the values form a properties file

2009-09-29T11:41:00.001+05:30

Properties pro = new Properties();
InputStream in = WelcomeAction.class
.getResourceAsStream("/IBLConstants.properties");
pro.load(in);
for (int i = 0; i < pro.size(); i++) {
if (pro.containsKey(roleType)) {
System.out.println(pro.getProperty(roleType));

}
}

Finding the Duplicate records from the Table

2009-09-10T18:39:00.001+05:30

SELECT MAX(col_1) AS dupid,COUNT(col_1) AS dupcnt
FROM table_name
GROUP BY col_1 HAVING dupcnt > 1

Difference between hashcode and equal method

2009-09-02T15:26:00.000+05:30

hashCode() and equals().

Object class provides two methods hashcode() and equals() to represent the identity of an object. It is a common convention that if one method is overridden then other should also be implemented.

Before explaining why, let see what the contract these two methods hold. As per the Java API documentation:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashcode() method must consistently return the same integer, provided no information used in equals() comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals(object) method, then calling the hashCode() method on each of the two objects must produce the same integer result.
It is NOT required that if two objects are unequal according to the equals(Java.lang.Object) method, then calling the hashCode() method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hashtables.

Now, consider an example where the key used to store the in Hashmap is an Integer. Consider that Integer class doesn’t implement hashcode() method. The code would look like:

map.put(new Integer(5),”Value1″);
String value = (String) map.get(new Integer(5));
System.out.println(value);
//Output : Value is null

Null value will be displayed since the hashcode() method returns a different hash value for the Integer object created at line 2and JVM tries to search for the object at different location.

Now if the integer class has hashcode() method like:

public int hashCode(){
return value;
}

Everytime the new Integer object is created with same integer value passed; the Integer object will return the same hash value. Once the same hash value is returned, JVM will go to the same memory address every time and if in case there are more than one objects present for the same hash value it will use equals() method to identify the correct object.

Another step of caution that needs to be taken is that while implementing the hashcode() method the fields that are present in the hashcode() should not be the one which could change the state of object.

Consider the example:

public class FourWheeler implements Vehicle {

private String name;

private int purchaseValue;

private int noOfTyres;

public FourWheeler(){}

public FourWheeler(String name, int purchaseValue) {

this.name = name;

this.purchaseValue = purchaseValue;

}

public void setPurchaseValue(int purchaseValue) {

this.purchaseValue = purchaseValue;

}

@Override

public int hashCode() {

final int prime = 31;

int result = 1;

result = prime * result + ((name == null) ? 0 : name.hashCode());

result = prime * result + purchaseValue;

return result;

}

FourWheeler fourWObj = new FourWheeler(“Santro”,”333333);
map.put(fourWObj,”Hyundai);
fourWObj.setPurchaseValue(“555555)
System.out.println(map.get(fourWObj));
//Output: null

We can see that inspite of passing the same object the value returned is null. This is because the hashcode() returned on evaluation will be different since the purchaseValue is set to ‘555555’ from ‘333333’. Hence we can conclude that the hashcode() should contain fields that doesn’t change the state of object.

One compatible, but not all that useful, way to define hashCode() is like this:

public int hashcode(){
return 0;
}

This approach will yield bad performance for the HashMap. The conclusion which can be made is that the hashcode() should(not must) return the same value if the objects are equal. If the objects are not equal then it must return different value.

Overriding equals() method

Consider the example:

public class StringHelper {

private String inputString;

public StringHelper(String string) {

inputString=string;

}

@Override

public int hashCode() {

return inputString.length();

}

public static void main(String[] args) {

StringHelper helperObj = new StringHelper(“string”);

StringHelper helperObj1 = new StringHelper(“string”);

if(helperObj.hashCode() == helperObj1.hashCode()){

System.out.println(“HashCode are equal”);

}

if(helperObj.equals(helperObj1)){

System.out.println(“Objects are equal”);

}else{

System.out.println(“Objects are not equal”);

}

public String getInputString() {

return inputString;

}

// Output:
HashCode are equal
Objects are not equal

We can see that even though the StringHelper object contains the same value the equals method has returned false but the hashcode method has return true value.

To prevent this inconsistency, we should make sure that we override both methods such that the contract between both methods doesn’t fail.

Steps that need to be taken into consideration while implementing equals method.

1. Use the == operator to check if the argument is a reference to this object. If so, return true. This is just a performance optimization, but one that is worth doing if the comparison is potentially expensive.

2. Use the instanceof operator to check if the argument has the correct type.

If not, return false. Typically, the correct type is the class in which the method occurs. Occasionally, it is some interface implemented by this class. Use an interface if the class implements an interface that refines the equals contract to permit comparisons across classes that implement the interface. Collection interfaces such as Set, List, Map, and Map.Entry have this property.

3. Cast the argument to the correct type. Because this cast was preceded by an instanceof test, it is guaranteed to succeed.

4. For each “significant” field in the class, checks if that field of the argument matches the corresponding field of this object. If all these tests succeed, return true; otherwise, return false

5. When you are finished writing your equals method, ask yourself three questions: Is it symmetric? Is it transitive? Is it consistent?

The correct implementation if equals method for the StringHelper class could be:

@Override

public boolean equals(Object obj) {

if (this == obj)

return true;

if (obj == null)

return false;

if (getClass() != obj.getClass())

return false;

final StringHelper other = (StringHelper) obj;

if (inputString == null) {

if (other.inputString != null)

return false;

} else if (!inputString.equals(other.inputString))

return false;

return true;

}

Banking Basics

2009-08-31T10:06:00.002+05:30

http://www.scribd.com/doc/19249474/Banking-Basics-290808

Generic class for Amount in words

2009-08-27T10:23:00.002+05:30

package com.evolvus.common.util;

public class AmountInWords {

final static String units[] = {"","one ","two ","three ","four ","five ","six ",

"seven ","eight ","nine ","ten ","eleven ","twelve ","thirteen ",

"fourteen ","fifteen ","sixteen ","seventeen ","eighteen ","nineteen "};

String tens[] = {"", "ten ","twenty ","thirty ","forty ","fifty ","sixty ","seventy ",

"eighty ","ninety "};

public String format(String aHigherCurrency, String aLowerCurrency,

String aAmount, String aSystemCurrencyFormat,int decimalLength) {

String words="";

String[] systemCurrencyFormats = aSystemCurrencyFormat.split(",");

int formatCount = systemCurrencyFormats[0].length();

String higherCurrencyValue = null;

String lowerCurrencyValue = null;

String[] amounts = aAmount.split("\\.");

if (amounts != null && amounts.length > 0) {

higherCurrencyValue = amounts[0];

if (amounts.length > 1)

lowerCurrencyValue = amounts[1];

}

words=words.concat(aHigherCurrency);

words=words.concat(" ");

/* Call to amount to words for higher currency */

words=words.concat(this.intialFormat(Integer.parseInt(higherCurrencyValue), formatCount));

if (lowerCurrencyValue != null) {

if (lowerCurrencyValue.length() > decimalLength) {

lowerCurrencyValue = lowerCurrencyValue.substring(0,

decimalLength);

}

words=words.concat("and ");

/* Call to amount to words for lower currency */

words=words.concat(this.intialFormat(Integer.parseInt(lowerCurrencyValue), 2));

words=words.concat(aLowerCurrency);

}

return words;

}

public String intialFormat(int amount,int foramt)

{

String words = "";

String tword="";

if(foramt==3){

int millions = amount / 1000000;

tword =threeDigits(millions);

if(tword.length()>1)

words=tword + "million ";

amount-= millions*1000000;

}

else if (foramt==2){

int crore = amount / 10000000;

tword =threeDigits(crore);

tword = threeDigits(crore);

if(tword.length()>1)

words+= tword + "crore ";

amount-= crore*10000000;

int lakhs = amount / 100000;

tword = threeDigits(lakhs);

if(tword.length()>1)

words+= tword + "lakh ";

amount-= lakhs*100000;

}

int thousands = amount / 1000;

tword = threeDigits(thousands);

if(tword.length()>1)

words+= tword + "thousand ";

amount-=thousands*1000;

words+=threeDigits(amount);

return words;

}

public String threeDigits(int digits)

{

String digWord = "";

int hnd = digits / 100;

if(hnd>0)

digWord+=units[hnd] + "hundred ";

int ten = digits - hnd *100;

if(ten<20)>

digWord+= units[ten];

else

{

int tenth = ten / 10;

digWord+=tens[tenth];

int last = ten - tenth*10;

digWord+= units[last];

}

return digWord;

}

public static void main(String args[]){

AmountInWords a = new AmountInWords();

/* Inputs

* Higher Currency

* Lower Currency

* Amount

* SystemConfiguration

* Selected Currency Decimal Points

* */

String s=a.format("Rupees", "Paisa", "3451234.425", "##,###", 3);

System.out.println(s);

}

Flex Style explorer for beter CSS

2009-08-20T14:14:00.001+05:30

A free online tool provided by Adobe Flex to create CSS. Some of the impressive parts of this tool are

· its free

· Its online so no installation required

· Damn quick

· And effect against every change you make is visible at the very same moment just like desktop applications. I think this is what flex is best in.

The name of this tool is Flex Style explorer. The Flex explorer allows you to interact with components and visually modify them. More importantly it is an effective development tool that allows you to create CSS within the site and then copy it in to our application.

Please click on the following link

http://examples.adobe.com/flex3/consulting/styleexplorer/Flex3StyleExplorer.html#

MYSQL DB Backup through java

2009-08-19T17:19:00.000+05:30

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.InputStreamReader;
import java.util.Date;

public class DBBackupUtil {
public static boolean getData(String userName,String password,String dbName,String FileName) throws Exception {
boolean isCompleted=true;
FileWriter fstream=null;
BufferedWriter out=null;
BufferedReader in=null;
Process run=null;
try{
System.out.println("DBBackup Start time:"+new Date());
System.out.println("---Started--");
run = Runtime.getRuntime().exec("mysqldump -u"+userName+" -p"+password+" --database "+dbName+" --routines=1");
in= new BufferedReader(new InputStreamReader(run.getInputStream()));
String line = null;
fstream = new FileWriter(FileName);
out = new BufferedWriter(fstream);
while ((line = in.readLine()) != null) {
out.write(line+'\r');
}
out.close();
in.close();
System.out.println("---Completed--");
System.out.println("DBBackup Completed time:"+new Date());

}catch (Exception e) {
e.printStackTrace();
isCompleted =false;
}finally{
fstream=null;
out=null;
in=null;
}
return isCompleted;
}
public static void main(String[] args) {
try{
DBBackupUtil backup = new DBBackupUtil();

backup.getData("root","root","ams_cameltest2","C:\\back.sql");

}catch (Exception e) {
e.printStackTrace();
}
}
}

Generic class for different currency

2009-08-12T13:03:00.000+05:30

public class GenericFormatCurrency {

String preixStr="";

String postfixStr = "";

int postfixLen=0;

String[] preixStrArray;

int prefixArrayLen = 0;

int prefixLen1=0;

int prefixLen2=0;

format(String formatStr){

preixStr=formatStr.substring(0,formatStr.lastIndexOf("."));

postfixStr=formatStr.substring(formatStr.lastIndexOf(".")+1);

postfixLen = postfixStr.length();

preixStrArray = preixStr.split(",");

prefixArrayLen = preixStrArray.length;

if(prefixArrayLen-1==0){

prefixLen1=preixStrArray[0].length();

}else{

prefixLen1=preixStrArray[prefixArrayLen-1].length();

prefixLen2=preixStrArray[prefixArrayLen-2].length();

}

public void formaNumber(String number) {

//format format = new format("##,####.0000");

//String number="87654321.12345";

String pre=number.substring(0,number.lastIndexOf("."));

String postnum=number.substring(number.lastIndexOf(".")+1);

String output="";

int length1=this.prefixLen1;

int length2=this.prefixLen2;

if(postnum.trim().length()<=this.postfixLen){

output="."+postnum;

}else{

output="."+postnum.substring(0,this.postfixLen);

}

System.out.println(output);

if(pre.trim().length()

output=pre+output ;

}else{

while(pre.trim().length()>0){

output=","+pre.substring(pre.trim().length()-length1,pre.trim().length())+output;

pre = pre.substring(0,pre.trim().length()-length1);

length1 = length2;

if(pre.trim().length()<=this.prefixLen1){

output = pre+output;

break;

}

System.out.println(output);

}

public static void main(String[] args) {

GenericFormatCurrency format = new GenericFormatCurrency("##,####.0000");

String number="87654321.12345";

format.formaNumber(number);

System.out.println("-------------------------");

format.formaNumber("87654321.1234");

}

Resolving heap space problem

2009-07-30T10:10:00.002+05:30

Eclipse and memory settings

eclipse.ini is a configuration file that is located in the root of your eclipseinstallation which is used as the default arguments passed to eclipse..

--launcher.XXMaxPermSize

512M

-vmargs

-Xms1024M

-Xmx1536m

Environment varialbe

JAVA_OPT java -Xms2048m -Xmx2441m

How to upload a file in to the ftp server through java

2009-07-24T18:34:00.004+05:30

package com.evolvus.documentmanagement.util;

import java.io.ByteArrayInputStream;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

import java.io.InputStream;

import org.apache.commons.net.ftp.FTP;

import org.apache.commons.net.ftp.FTPClient;

import org.apache.commons.net.ftp.FTPConnectionClosedException;

import org.apache.commons.net.ftp.FTPReply;

/***

* This is an program demonstrating how to use the FTPClient class.

* This program connects to an FTP server and retrieves the specified

* file.

***/

public final class FTPUtil

{

public boolean insertIntoFTP(String server,String port,String username,String password,String remote,String local,String directoryName,byte[] data){

boolean error = false;

FTPClient ftp = null;

try

{

ftp = new FTPClient();

this.getFTPConnection(ftp, server,port, username, password,directoryName);

if(ftp!=null){

InputStream input;

input = new ByteArrayInputStream(data);

ftp.storeFile(remote, input);

}

}catch (FTPConnectionClosedException e)

{

error = true;

System.err.println("Server closed connection.");

e.printStackTrace();

}

catch (IOException e)

{

error = true;

e.printStackTrace();

}

finally

{

if (ftp.isConnected())

{

try

{

ftp.disconnect();

}

catch (IOException f)

{

// do nothing

}

return error;

}

public byte[] getDataFromFTP(String server,String port,String username,String password,String remote,String directoryName,String local){

byte[] data = null ;

boolean error = false;

FTPClient ftp = null;

try

{

ftp = new FTPClient();

this.getFTPConnection(ftp, server,port, username, password,directoryName);

if(ftp!=null){

ByteArrayOutputStream output;

output = new ByteArrayOutputStream();

ftp.retrieveFile(remote, output);

data=output.toByteArray() ;

output.close();

}

catch (FTPConnectionClosedException e)

{

error = true;

System.err.println("Server closed connection.");

e.printStackTrace();

}

catch (IOException e)

{

error = true;

e.printStackTrace();

}

finally

{

if (ftp.isConnected())

{

try

{

ftp.disconnect();

}

catch (IOException f)

{

// do nothing

}

return data;

}

public FTPClient getFTPConnection(FTPClient ftp,String server,String port,String username,String password,String directoryName){

boolean error = false;

try

{

int reply;

if(port!=null &&port.trim().length()>0)

ftp.connect(server,Integer.parseInt(port));

else

ftp.connect(server);

System.out.println("Connected to " + server + ".");

// After connection attempt, you should check the reply code to verify

// success.

reply = ftp.getReplyCode();

if (!FTPReply.isPositiveCompletion(reply))

{

ftp.disconnect();

System.err.println("FTP server refused connection.");

}

if (!ftp.login(username, password))

{

ftp.logout();

error = true;

}

if(!ftp.changeWorkingDirectory(directoryName)){

ftp.mkd(directoryName);

}

ftp.setFileType(FTP.BINARY_FILE_TYPE);

}

catch (IOException e)

{

if (ftp.isConnected())

{

try

{

ftp.disconnect();

}

catch (IOException f)

{

// do nothing

}

System.err.println("Could not connect to server.");

e.printStackTrace();

}

return ftp;

}

public static void main(String[] args) {

FTPUtil util = new FTPUtil();

util.insertIntoFTP("192.168.1.1", "65300", "user1", "ftp*evolvus", "test123", "test", "test123", "test".getBytes());

}

Multiple file upload using Apache Struts

2009-07-10T20:10:00.002+05:30

Uploading of file using struts with the FormFile is easy! But the requirement that I got was not as sweet as I thought. I had to upload multiple files and the user had the facility to add files before doing the upload. Thus I had to have a “Add File” button that will present the user with one more column to select a file using the browse button.

Having the facility of FormFile and the apache upload package, I thought the task would be easy but I had tough time due the dynamic part of this task. In the end I solved the problem. And here is the solution for you people as you should not reinvent the wheel. :)

Add button problem was solved by a simple java script that created an INPUT tag and inserted to the existing form. The code is given below:

function addFileElement() {
fCount++;
var fObject = document.getElementById('fileSection');
var text = 'File:';
var tag='+fCount+']" value="">';
var brk='
';
var o1 = document.createTextNode(text);
var o2 = document.createElement(tag);
var o3 = document.createElement(brk);

fObject.appendChild(o3);
fObject.appendChild(o1);
fObject.appendChild(o2);
fObject.appendChild(o3);

}

As usual the form bean of struts had a FormFile and an ArrayList variable that would hold the entire set of files. Now, I the form bean we tune the setter method of FormFile so that, each time the function is called the new file that is being set is added to the ArrayList. The code is given below:

public void setTestFile(int in,FormFile t) {

try {

this.testFile = t; // testFile is FormFile’s obj
setFormFiles(t); // add the file to array
index++;
}catch(Exception e) {
System.out.println("Exception in setTestFile!" + e);
}
}

And now the jsp code! It’s fairly simple and sweet. All you have to do is provide a strut form that has "browse" buttons, a "submit" button and a “add” button. The add button will run the above java script and you will get more options to upload file!