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Top Ten Exceptions in Java?

>> Sunday, May 22, 2011

  1. Null Pointer Exception Exception
Assigning null to an object.
EXAMPLE:
String s-null;

2.Stack Overflow error

If we are performing recursive method invocation
Example:
class Test{

public void m1()
{
m1();
}
public static void main(String args[])
{
m1();

}


}

3.ArrayIndexOutOfBound Exception
If we are assigning a value to an array which is out of it's range

EXAMPLE:
int[] a={10,20,89,60}
System.out.println(a[2]); o/p is==89;
System.out.println(a[5]); o/p AIOBE;

4.) ClassCastException
It occurs when we are trying to typecast parent class object to child type

5.) NoclassDefFoundError
If the required class is not found available
Ex:
Java A and enter
If a.class file is not available we will get NCDFE

6.ExceptionInInitializerError
Whenever an Exception occurred during Initialization of static variables (or) static blocks.
EX:
class Test
{
static int i=10/0;
}

output :
EIIE caused by AritmeticException/by Zero

7.)IllegalArgumentException
If we are trying to invoke set priority method with more than it's range
EX:
class Test{
public static void main(String args[])
{
Thread.currentThread.setPriority(100);
}
}

8.) NumberFormatException
We are attempting to convert string to number type,if string is not formatted properly
EX:
String s="10";
int i=Integer.parseInt(s) o/p===10;

String s="ten";
int i=Integer.parseInt(s); o/p is NFE

9.)IllegalStae Exception

If thread is started and we again start the thread it raises ISE

10.)Assertion Exception

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Posted by SandStoneIndia at 10:38 PM , 0 comments
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Top Ten Exceptions In Java?

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Posted by SandStoneIndia at 10:37 PM , 0 comments

How To Retrevie Data from Database using struts and hibernate integration?

Create A Jsp page With One Field Employeecode and Month?.
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
  
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>SEARCH EMPLOYEE DATA BASED ON EMPLOYEE CODE </title>
</head>
<body background="blue">
<jsp:include page="header.jsp"></jsp:include>
<html:form action="/search">

<center><font size="5" colour="blue">SEARCH EMPLOYEE DATA BASED ON EMPLOYEE CODE AND MONTH</font></center>
<center>
<table bgcolor="blue" cellpadding="2" cellspacing="0">

<tr>
<td>Search BY EmpCode:
<html:text property="empcode" /></td></tr>
<br><br><br>
<tr>
<td>Month:
<html:select property="umonth">
<html:option value=" ">   </html:option>
<html:option value="JANUARY">JANUARY</html:option>
<html:option value="FEBUARY">FEBUARY</html:option>
<html:option value="MARCH">MARCH</html:option>
<html:option value="APRIL">APRIL</html:option>
<html:option value="MAY">MAY</html:option>
<html:option value="JUNE">JUNE</html:option>
<html:option value="JULY">JULY</html:option>
<html:option value="AUGUST">AUGUST</html:option>
<html:option value="SEPTEMBER">SEPTEMBER</html:option>
<html:option value="OCTOBER">OCTOBER</html:option>
<html:option value="NOVEMBER">NOVEMBER</html:option>
<html:option value="DECEMBER">DECEMBER</html:option>
</html:select>
</td>
<td>-YEAR-:
<html:select property="uyear">
<html:option value=" "></html:option>>
<html:option value="1980">1980</html:option>
<html:option value="1981">1981</html:option>
<html:option value="1982">1982</html:option>
<html:option value="1983">1983</html:option>
<html:option value="1984">1984</html:option>
<html:option value="1985">1985</html:option>
<html:option value="1986">1986</html:option>
<html:option value="1987">1987</html:option>
<html:option value="1988">1988</html:option>
<html:option value="1989">1989</html:option>
<html:option value="1990">1990</html:option>
<html:option value="1991">1991</html:option>
<html:option value="1992">1992</html:option>
<html:option value="1993">1993</html:option>
<html:option value="1994">1994</html:option>
<html:option value="1995">1995</html:option>
<html:option value="1996">1996</html:option>
<html:option value="1997">1997</html:option>
<html:option value="1998">1998</html:option>
<html:option value="1999">1999</html:option>
<html:option value="2000">2000</html:option>
<html:option value="2001">2001</html:option>
<html:option value="2002">2002</html:option>
<html:option value="2003">2003</html:option>
<html:option value="2004">2004</html:option>
<html:option value="2005">2005</html:option>
<html:option value="2006">2006</html:option>
<html:option value="2007">2007</html:option>
<html:option value="2008">2008</html:option>
<html:option value="2009">2009</html:option>
<html:option value="2010">2010</html:option>
<html:option value="2011">2011</html:option>
<html:option value="2012">2012</html:option>
<html:option value="2013">2013</html:option>
<html:option value="2014">2014</html:option>
<html:option value="2015">2015</html:option>
<html:option value="2016">2016</html:option>
<html:option value="1980">1980</html:option>
</html:select></td>

</tr>
<tr>
<td align="center"><html:submit value="SEARCH"/></td></tr><br><br></br>
</table></center>
</html:form>

<logic:present name="searchresults" >

<table border="1">
<tr>
<td>emp_info_audit_key</td>
<td>empcode</td>
<td>empname</td>
<td>emp_designation</td>
<td>emp_department</td>
<td>emp_bank_acc_no</td>
<td>emp_email</td>
<td>emp_no_ofdays_worked</td>
<td>emp_basic</td>
<td>emp_hra</td>
<td>emp_conveyance</td>
<td>emp_onsite_allowence</td>
<td>emp_medical</td>
<td>emp_pf_emp_con</td>
<td>emp_gross</td>
<td>emp_pf</td>
<td>emp_itax</td>
<td>emp_pro_tax</td>
<td>emp_other_deduct</td>
<td>emp_tot_deduct</td>
<td>emp_net_sal</td>
<td>date_time</td>
<td>month_salary</td>
<td>create_user</td>
<td>modify_user</td>
</tr>
</table>
<table border="1" bgcolor="blue">
<logic:iterate id="reportSearch" name="searchresults" scope="session">
<tr>
<td><bean:write property="emp_info_audit_key" name="reportSearch"/></td>
<td><bean:write property="empcode" name="reportSearch"/></td>
<td><bean:write property="empname" name="reportSearch"/></td>
<td><bean:write property="emp_designation" name="reportSearch"/></td>
<td><bean:write property="emp_department" name="reportSearch"/></td>
<td><bean:write property="emp_bank_acc_no" name="reportSearch"/></td>
<td><bean:write property="emp_email" name="reportSearch"/></td>
<td><bean:write property="emp_no_ofdays_worked" name="reportSearch"/></td>
<td><bean:write property="emp_basic" name="reportSearch"/></td>
<td><bean:write property="emp_hra" name="reportSearch"/></td>
<td><bean:write property="emp_conveyance" name="reportSearch"/></td>
<td><bean:write property="emp_onsite_allowence" name="reportSearch"/></td>
<td><bean:write property="emp_medical" name="reportSearch"/></td>
<td><bean:write property="emp_pf_emp_con" name="reportSearch"/></td>
<td><bean:write property="emp_gross" name="reportSearch"/></td>
<td><bean:write property="emp_pf" name="reportSearch"/></td>
<td><bean:write property="emp_itax" name="reportSearch"/></td>
<td><bean:write property="emp_pro_tax" name="reportSearch"/></td>
<td><bean:write property="emp_other_deduct" name="reportSearch"/></td>
<td><bean:write property="emp_tot_deduct" name="reportSearch"/></td>
<td><bean:write property="emp_net_sal" name="reportSearch"/></td>
<td><bean:write property="date_time" name="reportSearch"/></td>
<td><bean:write property="month_salary" name="reportSearch"/></td>
<td><bean:write property="create_user" name="reportSearch"/></td>
<td><bean:write property="modify_user" name="reportSearch"/></td>

</tr>
</logic:iterate>
</table>
</logic:present>
<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>
<jsp:include page="footer.jsp"></jsp:include>
</body>
</html>


Crate An Action Fom Class?
public class SearchForm extends ActionForm {
private String empcode=null;
private String umonth=null;



/**
* @return the umonth
*/
public String getUmonth() {
return umonth;
}
/**
* @param umonth the umonth to set
*/
public void setUmonth(String umonth) {
this.umonth = umonth;
}
/**
* @return the empcode
*/
public String getEmpcode() {
return empcode;
}
/**
* @param empcode the empcode to set
*/
public void setEmpcode(String empcode) {
this.empcode = empcode;
}
/**
* @return the month
*/


}


Create An ActionClass?
public class SearchAction extends Action{
@Override
public ActionForward execute(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
// TODO Auto-generated method stub
SearchForm objSearchForm=(SearchForm)form;
String empcode=objSearchForm.getEmpcode();
String month=objSearchForm.getUmonth();

System.out.println("in search action class");

try{

DaoFactory daoFactory=new DaoFactory(); //(It is a Foctory class)//
ReportSearchDao dao=daoFactory.getReportSearchDaoImpl();

ArrayList al= dao.searchResults(objSearchForm);


HttpSession objHttpSession = request.getSession();

if(objHttpSession.getAttribute("searchresults") != null)
{
objHttpSession.removeAttribute("searchresults");
}

if( al.size()>0)
{
objHttpSession.setAttribute("searchresults", al);
}
System.out.println("inside try block");



}catch(Exception e)
{
e.printStackTrace();
System.out.println("error in action class");
}
return mapping.findForward("success");
}

}
Craate A factory class ?
A Factory class which retrun object of the implemented class.
public class DaoFactory {
public ReportSearchDao getReportSearchDaoImpl(){

return new ReportSearchDaoImpl();
}


}

Craete A Dao Interface?
Here we will provide a Abstractmethod ..
public interface ReportSearchDao {
public ArrayList searchResults(SearchForm objSearchForm) throws Exception;

}
Craete DaoImpl Class?
package com.centris.atr.dao.pojos;

import java.util.ArrayList;
import java.util.Iterator;

import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;

import com.centris.atr.dao.sessionfactory.HibernateSessionFactory;
import com.centris.atr.dto.ReportSearch;
import com.centris.atr.struts.formbean.SearchForm;

public class ReportSearchDaoImpl implements ReportSearchDao {
Session session=null;
ArrayList al;

public ArrayList searchResults(SearchForm objSearchForm) throws Exception
{
try{
SearchForm objSearchForm1=new SearchForm();
String empcode=objSearchForm.getEmpcode();
System.out.println("dao empcode"+empcode);
String month=objSearchForm.getUmonth();
System.out.println("month"+month);
al=new ArrayList();
session=HibernateSessionFactory.getSession();
System.out.println("===============1===============");
System.out.println("session"+session);
Query query=session.createQuery("from AtrEmployeeInfo where empcode=? and month_salary=?").setString(0, empcode).setString(1, month);
Iterator it=query.iterate();
while(it.hasNext())
{
AtrEmployeeInfo atrEmployeeInfo=it.next();
System.out.println("emp_info_audit_key======"+atrEmployeeInfo.getEmp_info_audit_key()+"empcode======"+atrEmployeeInfo.getEmpcode()+"empname======="+atrEmployeeInfo.getEmpname()+"emp_designation====="+atrEmployeeInfo.getEmp_designation()+"emp_department"+atrEmployeeInfo.getEmp_department()+"emp_bank_acc_no======="+atrEmployeeInfo.getEmp_bank_acc_no()+"emp_email"+atrEmployeeInfo.getEmp_email()+"emp_no_ofdays_worked========"+atrEmployeeInfo.getEmp_no_ofdays_worked());
ReportSearch reportSearch=new ReportSearch();
reportSearch.setEmp_info_audit_key(atrEmployeeInfo.getEmp_info_audit_key());
reportSearch.setEmpcode(atrEmployeeInfo.getEmpcode());
reportSearch.setEmpname(atrEmployeeInfo.getEmpname());
reportSearch.setEmp_designation(atrEmployeeInfo.getEmp_designation());
reportSearch.setEmp_department(atrEmployeeInfo.getEmp_department());
reportSearch.setEmp_bank_acc_no(atrEmployeeInfo.getEmp_bank_acc_no());
reportSearch.setEmp_email(atrEmployeeInfo.getEmp_email());
reportSearch.setEmp_no_ofdays_worked(atrEmployeeInfo.getEmp_no_ofdays_worked());
reportSearch.setEmp_basic(atrEmployeeInfo.getEmp_basic());
reportSearch.setEmp_hra(atrEmployeeInfo.getEmp_hra());
reportSearch.setEmp_conveyance(atrEmployeeInfo.getEmp_conveyance());
reportSearch.setEmp_onsite_allowence(atrEmployeeInfo.getEmp_onsite_allowence());
reportSearch.setEmp_medical(atrEmployeeInfo.getEmp_medical());
reportSearch.setEmp_pf_emp_con(atrEmployeeInfo.getEmp_pf_emp_con());
reportSearch.setEmp_gross(atrEmployeeInfo.getEmp_gross());
reportSearch.setEmp_pf(atrEmployeeInfo.getEmp_pf());
reportSearch.setEmp_itax(atrEmployeeInfo.getEmp_itax());
reportSearch.setEmp_pro_tax(atrEmployeeInfo.getEmp_pro_tax());
reportSearch.setEmp_other_deduct(atrEmployeeInfo.getEmp_other_deduct());
reportSearch.setEmp_tot_deduct(atrEmployeeInfo.getEmp_tot_deduct());
reportSearch.setEmp_net_sal(atrEmployeeInfo.getEmp_net_sal());
reportSearch.setDate_time(atrEmployeeInfo.getDate_time());
reportSearch.setMonth_salary(atrEmployeeInfo.getMonth_salary());
reportSearch.setCreate_user(atrEmployeeInfo.getCreate_user());
reportSearch.setModify_user(atrEmployeeInfo.getModify_user());
al.add(reportSearch);
}

System.out.println("after query");




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

}
finally
{
session.close();
}

System.out.println("above return");
return al;


}


}


Create a Dto Class?
public class ReportSearch {
private Integer emp_info_audit_key;
private String empcode;
private String empname;
private String emp_designation;
private String emp_department;
private String emp_bank_acc_no;
private String emp_email;
private Integer emp_no_ofdays_worked;
private Integer emp_basic;
private Integer emp_hra;
private Integer emp_conveyance;
private Integer emp_onsite_allowence;
private Integer emp_medical;
private Integer emp_pf_emp_con;
private Integer emp_gross;
private Integer emp_pf;
private Integer emp_itax;
private Integer emp_pro_tax;
private Integer emp_other_deduct;
private Integer emp_tot_deduct;
private Integer emp_net_sal;
private Date date_time;
private String month_salary;
private String create_user;
private String modify_user;




public Integer getEmp_info_audit_key() {
return emp_info_audit_key;
}
public void setEmp_info_audit_key(Integer emp_info_audit_key) {
this.emp_info_audit_key = emp_info_audit_key;
}

public String getEmpcode() {
return empcode;
}
public void setEmpcode(String empcode) {
this.empcode = empcode;
}
public String getEmpname() {
return empname;
}
public void setEmpname(String empname) {
this.empname = empname;
}
public String getEmp_designation() {
return emp_designation;
}
public void setEmp_designation(String emp_designation) {
this.emp_designation = emp_designation;
}
public String getEmp_department() {
return emp_department;
}
public void setEmp_department(String emp_department) {
this.emp_department = emp_department;
}
public String getEmp_bank_acc_no() {
return emp_bank_acc_no;
}
public void setEmp_bank_acc_no(String emp_bank_acc_no) {
this.emp_bank_acc_no = emp_bank_acc_no;
}
public String getEmp_email() {
return emp_email;
}
public void setEmp_email(String emp_email) {
this.emp_email = emp_email;
}
public Integer getEmp_no_ofdays_worked() {
return emp_no_ofdays_worked;
}
public void setEmp_no_ofdays_worked(Integer emp_no_ofdays_worked) {
this.emp_no_ofdays_worked = emp_no_ofdays_worked;
}
public Integer getEmp_basic() {
return emp_basic;
}
public void setEmp_basic(Integer emp_basic) {
this.emp_basic = emp_basic;
}
public Integer getEmp_hra() {
return emp_hra;
}
public void setEmp_hra(Integer emp_hra) {
this.emp_hra = emp_hra;
}
public Integer getEmp_conveyance() {
return emp_conveyance;
}
public void setEmp_conveyance(Integer emp_conveyance) {
this.emp_conveyance = emp_conveyance;
}
public Integer getEmp_onsite_allowence() {
return emp_onsite_allowence;
}
public void setEmp_onsite_allowence(Integer emp_onsite_allowence) {
this.emp_onsite_allowence = emp_onsite_allowence;
}
public Integer getEmp_medical() {
return emp_medical;
}
public void setEmp_medical(Integer emp_medical) {
this.emp_medical = emp_medical;
}
public Integer getEmp_pf_emp_con() {
return emp_pf_emp_con;
}
public void setEmp_pf_emp_con(Integer emp_pf_emp_con) {
this.emp_pf_emp_con = emp_pf_emp_con;
}
public Integer getEmp_gross() {
return emp_gross;
}
public void setEmp_gross(Integer emp_gross) {
this.emp_gross = emp_gross;
}
public Integer getEmp_pf() {
return emp_pf;
}
public void setEmp_pf(Integer emp_pf) {
this.emp_pf = emp_pf;
}
public Integer getEmp_itax() {
return emp_itax;
}
public void setEmp_itax(Integer emp_itax) {
this.emp_itax = emp_itax;
}
public Integer getEmp_pro_tax() {
return emp_pro_tax;
}
public void setEmp_pro_tax(Integer emp_pro_tax) {
this.emp_pro_tax = emp_pro_tax;
}
public Integer getEmp_other_deduct() {
return emp_other_deduct;
}
public void setEmp_other_deduct(Integer emp_other_deduct) {
this.emp_other_deduct = emp_other_deduct;
}
public Integer getEmp_tot_deduct() {
return emp_tot_deduct;
}
public void setEmp_tot_deduct(Integer emp_tot_deduct) {
this.emp_tot_deduct = emp_tot_deduct;
}
public Integer getEmp_net_sal() {
return emp_net_sal;
}
public void setEmp_net_sal(Integer emp_net_sal) {
this.emp_net_sal = emp_net_sal;
}
public Date getDate_time() {
return date_time;
}
public void setDate_time(Date date_time) {
this.date_time = date_time;
}
public String getMonth_salary() {
return month_salary;
}
public void setMonth_salary(String month_salary) {
this.month_salary = month_salary;
}
public String getCreate_user() {
return create_user;
}
public void setCreate_user(String create_user) {
this.create_user = create_user;
}
public String getModify_user() {
return modify_user;
}
public void setModify_user(String modify_user) {
this.modify_user = modify_user;
}



}

Provide Hibernate Integration Through A class without using a plugin class?
public class HibernateSessionFactory {

/**
* Location of hibernate.cfg.xml file.
* Location should be on the classpath as Hibernate uses
* #resourceAsStream style lookup for its configuration file.
* The default classpath location of the hibernate config file is
* in the default package. Use #setConfigFile() to update
* the location of the configuration file for the current session.
*/
private static String CONFIG_FILE_LOCATION = "com/centris/atr/dao/sessionfactory/hibernate.cfg.xml";

private static final ThreadLocal threadLocal = new ThreadLocal();
private static Configuration configuration = new Configuration();
private static org.hibernate.SessionFactory sessionFactory;
private static String configFile = CONFIG_FILE_LOCATION;

static {
try {
configuration.configure(configFile);
sessionFactory = configuration.buildSessionFactory();
} catch (Exception e) {
System.err
.println("%%%% Error Creating SessionFactory %%%%");
e.printStackTrace();
}
}
private HibernateSessionFactory() {
}

/**
* Returns the ThreadLocal Session instance. Lazy initialize
* the SessionFactory if needed.
*
* @return Session
* @throws HibernateException
*/
public static Session getSession() throws HibernateException {
Session session = (Session) threadLocal.get();

if (session == null || !session.isOpen()) {
if (sessionFactory == null) {
rebuildSessionFactory();
}
session = (sessionFactory != null) ? sessionFactory.openSession()
: null;
threadLocal.set(session);
}

return session;
}

/**
* Rebuild hibernate session factory
*
*/
public static void rebuildSessionFactory() {
try {
configuration.configure(configFile);
sessionFactory = configuration.buildSessionFactory();
} catch (Exception e) {
System.err
.println("%%%% Error Creating SessionFactory %%%%");
e.printStackTrace();
}
}

/**
* Close the single hibernate session instance.
*
* @throws HibernateException
*/
public static void closeSession() throws HibernateException {
Session session = (Session) threadLocal.get();
threadLocal.set(null);

if (session != null) {
session.close();
}
}

/**
* return session factory
*
*/
public static org.hibernate.SessionFactory getSessionFactory() {
return sessionFactory;
}

/**
* return session factory
*
* session factory will be rebuilded in the next call
*/
public static void setConfigFile(String configFile) {
HibernateSessionFactory.configFile = configFile;
sessionFactory = null;
}

/**
* return hibernate configuration
*
*/
public static Configuration getConfiguration() {
return configuration;
}

}

Create Configuration .xml file?




com.mysql.jdbc.Driver
jdbc:mysql://192.168.1.101:3306/test
test
test
10
org.hibernate.dialect.HSQLDialect
true
update









Create Hbm.xml file?
which can be used to provide mapping between pojoclass and respective table,property and column names.
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!--
    Mapping file autogenerated by MyEclipse Persistence Tools
-->
<hibernate-mapping>
    <class name="com.centris.atr.dao.pojos.AtrEmployeeInfo" table="atr_employee_info_audit" >
        <id name="emp_info_audit_key" type="java.lang.Integer">
            <column name="emp_info_audit_key" length="8" />
            <generator class="native" />
        </id>
        <property name="empcode" type="java.lang.String">
            <column name="empcode" length="25" />
        </property>
        <property name="empname" type="java.lang.String">
            <column name="empname" length="15" />
        </property>
        <property name="emp_designation" type="java.lang.String">
            <column name="emp_designation" length="10" />
        </property>
        <property name="emp_department" type="java.lang.String">
            <column name="emp_department" length="40" />
        </property>
        <property name="emp_bank_acc_no" type="java.lang.String">
            <column name="emp_bank_acc_no" length="40" />
        </property>
        <property name="emp_email" type="java.lang.String">
            <column name="emp_email" length="10" />
        </property>
        <property name="emp_no_ofdays_worked" type="java.lang.Integer">
            <column name="emp_no_ofdays_worked" length="40" />
        </property>
        <property name="emp_basic" type="java.lang.Integer">
            <column name="emp_basic" length="25" />
        </property>
        <property name="emp_hra" type="java.lang.Integer">
            <column name="emp_hra" />
        </property>
        <property name="emp_conveyance" type="java.lang.Integer">
            <column name="emp_conveyance" length="15" />
        </property>
        <property name="emp_onsite_allowence" type="java.lang.Integer">
            <column name="emp_onsite_allowence" length="1" />
        </property>
        <property name="emp_medical" type="java.lang.Integer">
            <column name="emp_medical" length="30" />
        </property>
        <property name="emp_pf_emp_con" type="java.lang.Integer">
            <column name="emp_pf_emp_con" length="10" />
        </property>
        <property name="emp_gross" type="java.lang.Integer">
            <column name="emp_gross" length="10" />
        </property>
        <property name="emp_pf" type="java.lang.Integer">
            <column name="emp_pf" length="5" />
        </property>
        <property name="emp_itax" type="java.lang.Integer">
            <column name="emp_itax" length="10" />
        </property>
        <property name="emp_pro_tax" type="java.lang.Integer">
            <column name="emp_pro_tax" length="10" />
        </property>
        <property name="emp_other_deduct" type="java.lang.Integer">
            <column name="emp_other_deduct" />
        </property>
        <property name="emp_tot_deduct" type="java.lang.Integer">
            <column name="emp_tot_deduct" length="4" />
        </property>
        <property name="emp_net_sal" type="java.lang.Integer">
            <column name="emp_net_sal" length="15" />
        </property>
        <property name="date_time" type="java.sql.Date">
            <column name="date_time" length="15" />
        </property>
        <property name="month_salary" type="java.lang.String">
            <column name="month_salary" length="100" />
        </property>
        <property name="create_user" type="java.lang.String">
            <column name="create_user" length="35" />
        </property>
        <property name="modify_user" type="java.lang.String">
            <column name="modify_user" length="35" />
        </property>
     
    </class>
</hibernate-mapping&gt

Create A pojo class ?
Pojo class is same as dto class which had wrritten.

.To Display data in a Jsp page? 
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
    <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html"%>
    <%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic"%>
        <%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean"%>
        <%@taglib uri="http://displaytag.sf.net" prefix="display" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>Insert title here</title>
</head>
<body background="blue">
<jsp:include page="header.jsp"></jsp:include>
<logic:present name="searchresults" >

<table border="1" bgcolor="cyan" cellpadding="4" cellspacing="2">
<tr>
<td>emp_info_audit_key</td>
<td>empcode</td>
<td>empname</td>
<td>emp_designation</td>
<td>emp_department</td>
<td>emp_bank_acc_no</td>
<td>emp_email</td>
<td>emp_no_ofdays_worked</td>
<td>emp_basic</td>
<td>emp_hra</td>
<td>emp_conveyance</td>
<td>emp_onsite_allowence</td>
<td>emp_medical</td>
<td>emp_pf_emp_con</td>
<td>emp_gross</td>
<td>emp_pf</td>
<td>emp_itax</td>
<td>emp_pro_tax</td>
<td>emp_other_deduct</td>
<td>emp_tot_deduct</td>
<td>emp_net_sal</td>
<td>date_time</td>
<td>month_salary</td>
<td>create_user</td>
<td>modify_user</td>
</tr>


<logic:iterate id="reportSearch" name="searchresults" scope="session">
<tr>
<td><bean:write property="emp_info_audit_key" name="reportSearch"/></td>
<td><bean:write property="empcode" name="reportSearch"/></td>
<td><bean:write property="empname" name="reportSearch"/></td>
<td><bean:write property="emp_designation" name="reportSearch"/></td>
<td><bean:write property="emp_department" name="reportSearch"/></td>
<td><bean:write property="emp_bank_acc_no" name="reportSearch"/></td>
<td><bean:write property="emp_email" name="reportSearch"/></td>
<td><bean:write property="emp_no_ofdays_worked" name="reportSearch"/></td>
<td><bean:write property="emp_basic" name="reportSearch"/></td>
<td><bean:write property="emp_hra" name="reportSearch"/></td>
<td><bean:write property="emp_conveyance" name="reportSearch"/></td>
<td><bean:write property="emp_onsite_allowence" name="reportSearch"/></td>
<td><bean:write property="emp_medical" name="reportSearch"/></td>
<td><bean:write property="emp_pf_emp_con" name="reportSearch"/></td>
<td><bean:write property="emp_gross" name="reportSearch"/></td>
<td><bean:write property="emp_pf" name="reportSearch"/></td>
<td><bean:write property="emp_itax" name="reportSearch"/></td>
<td><bean:write property="emp_pro_tax" name="reportSearch"/></td>
<td><bean:write property="emp_other_deduct" name="reportSearch"/></td>
<td><bean:write property="emp_tot_deduct" name="reportSearch"/></td>
<td><bean:write property="emp_net_sal" name="reportSearch"/></td>
<td><bean:write property="date_time" name="reportSearch"/></td>
<td><bean:write property="month_salary" name="reportSearch"/></td>
<td><bean:write property="create_user" name="reportSearch"/></td>
<td><bean:write property="modify_user" name="reportSearch"/></td>

</tr>
</logic:iterate>
</table>
</logic:present>
<br><br><br><br><br><br><br>



<br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br>



<jsp:include page="footer.jsp"></jsp:include>
</body>
</html>

This is the way to search data from database........

Read more...
Posted by SandStoneIndia at 10:06 PM , 0 comments
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