servlet Archives - Ebhor.com

Employee Management System Project JSP Servlet

May 20, 2023May 20, 2023 by manish

org. comp.model Employee Model – Employee.java

package org.comp.model;

import java.io.Serializable;
import java.math.BigDecimal;
import java.util.Objects;

public class Employee implements Serializable {

	private static final long serialVersionUID = 1L;
	private Long id;
	private String name;
	private String department;
	private String designation;
	private BigDecimal salary;

	public Employee() {

	}

	public Employee(Long id, String name, String department, String designation, BigDecimal salary) {
		super();
		this.id = id;
		this.name = name;
		this.department = department;
		this.designation = designation;
		this.salary = salary;
	}

	@Override
	public String toString() {
		return "Employee [id=" + id + ", name=" + name + ", department=" + department + ", designation=" + designation
				+ ", salary=" + salary + "]";
	}

	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getDepartment() {
		return department;
	}

	public void setDepartment(String department) {
		this.department = department;
	}

	public String getDesignation() {
		return designation;
	}

	public void setDesignation(String designation) {
		this.designation = designation;
	}

	public BigDecimal getSalary() {
		return salary;
	}

	public void setSalary(BigDecimal salary) {
		this.salary = salary;
	}

	public static long getSerialversionuid() {
		return serialVersionUID;
	}

}

package org.comp.model;

import java.io.Serializable;

import java.math.BigDecimal;

import java.util.Objects;

public class Employee implements Serializable {

private static final long serialVersionUID = 1L;

private Long id;

private String name;

private String department;

private String designation;

private BigDecimal salary;

public Employee() {

}

public Employee(Long id, String name, String department, String designation, BigDecimal salary) {

super();

this.id = id;

this.name = name;

this.department = department;

this.designation = designation;

this.salary = salary;

}

@Override

public String toString() {

return "Employee [id=" + id + ", name=" + name + ", department=" + department + ", designation=" + designation

+ ", salary=" + salary + "]";

}

public Long getId() {

return id;

}

public void setId(Long id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public String getDepartment() {

return department;

}

public void setDepartment(String department) {

this.department = department;

}

public String getDesignation() {

return designation;

}

public void setDesignation(String designation) {

this.designation = designation;

}

public BigDecimal getSalary() {

return salary;

}

public void setSalary(BigDecimal salary) {

this.salary = salary;

}

public static long getSerialversionuid() {

return serialVersionUID;

}

Employee Controller Servlet added org.comp.controller package is used for controller AddEmployee.Java

package org.comp.controller;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.comp.dao.EmployeeDAO;
import org.comp.model.Employee;
@WebServlet("/add-employee")
public class AddEmployee extends HttpServlet {
	private static final long serialVersionUID = 1L;
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String name = request.getParameter("name");
		String department = request.getParameter("department");
		String designation = request.getParameter("designation");
		String salary = request.getParameter("salary");
		Employee e = new Employee();
		e.setName(name);
		e.setDepartment(department);
		e.setDesignation(designation);
		e.setSalary(new BigDecimal(salary));
		System.out.println(e);
		EmployeeDAO dao = new EmployeeDAO();
		dao.insert(e);
		List<Employee> employeeList = dao.fetchAll();
		request.setAttribute("employeeList", employeeList);
		int employeeCount = dao.count();
		request.setAttribute("employeeCount", employeeCount);
		RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");
		rd.forward(request, response);
	}
}

package org.comp.controller;

import java.io.IOException;

import java.math.BigDecimal;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;

import org.comp.model.Employee;

@WebServlet("/add-employee")

public class AddEmployee extends HttpServlet {

private static final long serialVersionUID = 1L;

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

String name = request.getParameter("name");

String department = request.getParameter("department");

String designation = request.getParameter("designation");

String salary = request.getParameter("salary");

Employee e = new Employee();

e.setName(name);

e.setDepartment(department);

e.setDesignation(designation);

e.setSalary(new BigDecimal(salary));

System.out.println(e);

EmployeeDAO dao = new EmployeeDAO();

dao.insert(e);

List<Employee> employeeList = dao.fetchAll();

request.setAttribute("employeeList", employeeList);

int employeeCount = dao.count();

request.setAttribute("employeeCount", employeeCount);

RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");

rd.forward(request, response);

}

FetchEmployee.java

package org.comp.controller;

import java.io.IOException;
import java.math.BigDecimal;
import java.util.List;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;
import org.comp.model.Employee;

@WebServlet("/update")
public class FetchEmployee extends HttpServlet {
	private static final long serialVersionUID = 1L;

	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Long id=Long.valueOf( request.getParameter("id"));
		EmployeeDAO dao = new EmployeeDAO();
		Employee employee = dao.fetch(id);
		System.out.println(employee);
		request.setAttribute("employee", employee);
		RequestDispatcher rd = request.getRequestDispatcher("/UpdateEmployee.jsp");
		rd.forward(request, response);
	}

}

package org.comp.controller;

import java.io.IOException;

import java.math.BigDecimal;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;

import org.comp.model.Employee;

@WebServlet("/update")

public class FetchEmployee extends HttpServlet {

private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

Long id=Long.valueOf( request.getParameter("id"));

EmployeeDAO dao = new EmployeeDAO();

Employee employee = dao.fetch(id);

System.out.println(employee);

request.setAttribute("employee", employee);

RequestDispatcher rd = request.getRequestDispatcher("/UpdateEmployee.jsp");

rd.forward(request, response);

}

UpdateEmployee.java

package org.comp.controller;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.comp.dao.EmployeeDAO;
import org.comp.model.Employee;
@WebServlet("/update-employee")
public class UpdateEmployee extends HttpServlet {
	private static final long serialVersionUID = 1L;
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Long id = Long.valueOf(request.getParameter("id"));
		String name = request.getParameter("name");
		String department = request.getParameter("department");
		String designation = request.getParameter("designation");
		String salary = request.getParameter("salary");
		Employee e = new Employee();
		e.setId(id);
		e.setName(name);
		e.setDepartment(department);
		e.setDesignation(designation);
		e.setSalary(new BigDecimal(salary));
		System.out.println(e);
		EmployeeDAO dao = new EmployeeDAO();
		dao.update(e);
		List<Employee> employeeList = dao.fetchAll();
		request.setAttribute("employeeList", employeeList);
		int employeeCount = dao.count();
		request.setAttribute("employeeCount", employeeCount);
		RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");
		rd.forward(request, response);
	}
}

package org.comp.controller;

import java.io.IOException;

import java.math.BigDecimal;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;

import org.comp.model.Employee;

@WebServlet("/update-employee")

public class UpdateEmployee extends HttpServlet {

private static final long serialVersionUID = 1L;

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

Long id = Long.valueOf(request.getParameter("id"));

String name = request.getParameter("name");

String department = request.getParameter("department");

String designation = request.getParameter("designation");

String salary = request.getParameter("salary");

Employee e = new Employee();

e.setId(id);

e.setName(name);

e.setDepartment(department);

e.setDesignation(designation);

e.setSalary(new BigDecimal(salary));

System.out.println(e);

EmployeeDAO dao = new EmployeeDAO();

dao.update(e);

List<Employee> employeeList = dao.fetchAll();

request.setAttribute("employeeList", employeeList);

int employeeCount = dao.count();

request.setAttribute("employeeCount", employeeCount);

RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");

rd.forward(request, response);

}

showEmployee.java

package org.comp.controller;                                                                                
                                                                                                            
import java.io.IOException;                                                                                 
import java.math.BigDecimal;                                                                                
import java.util.List;                                                                                      
                                                                                                            
import javax.servlet.RequestDispatcher;                                                                     
import javax.servlet.ServletException;                                                                      
import javax.servlet.annotation.WebServlet;                                                                 
import javax.servlet.http.HttpServlet;                                                                      
import javax.servlet.http.HttpServletRequest;                                                               
import javax.servlet.http.HttpServletResponse;                                                              
                                                                                                            
import org.comp.dao.EmployeeDAO;                                                                            
import org.comp.model.Employee;                                                                             
                                                                                                            
@WebServlet("/show-employee")                                                                               
public class ShowEmployee extends HttpServlet {                                                             
	private static final long serialVersionUID = 1L;                                                        
                                                                                                            
	protected void doGet(HttpServletRequest request, HttpServletResponse response)                          
			throws ServletException, IOException {                                                          
		EmployeeDAO dao = new EmployeeDAO();                                                                
		List<Employee> employeeList = dao.fetchAll();                                                       
		int employeeCount = dao.count();                                                                    
		request.setAttribute("employeeList", employeeList);                                                 
		request.setAttribute("employeeCount", employeeCount);                                               
		RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");                          
		rd.forward(request, response);                                                                      
	}                                                                                                       
                                                                                                            
}

package org.comp.controller;

import java.io.IOException;

import java.math.BigDecimal;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;

import org.comp.model.Employee;

@WebServlet("/show-employee")

public class ShowEmployee extends HttpServlet {

private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

EmployeeDAO dao = new EmployeeDAO();

List<Employee> employeeList = dao.fetchAll();

int employeeCount = dao.count();

request.setAttribute("employeeList", employeeList);

request.setAttribute("employeeCount", employeeCount);

RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");

rd.forward(request, response);

}

DeleteEmployee.java

package org.comp.controller;
import java.io.IOException;
import java.math.BigDecimal;
import java.util.List;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.comp.dao.EmployeeDAO;
import org.comp.model.Employee;
@WebServlet("/delete")
public class DeleteEmployee extends HttpServlet {
	private static final long serialVersionUID = 1L;
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		Long id =Long.valueOf(request.getParameter("id"));
		EmployeeDAO dao = new EmployeeDAO();
		int st = dao.delete(id);
		List<Employee> employeeList = dao.fetchAll();
		request.setAttribute("employeeList", employeeList);
		RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");
		rd.forward(request, response);
	}
}

package org.comp.controller;

import java.io.IOException;

import java.math.BigDecimal;

import java.util.List;

import javax.servlet.RequestDispatcher;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import org.comp.dao.EmployeeDAO;

import org.comp.model.Employee;

@WebServlet("/delete")

public class DeleteEmployee extends HttpServlet {

private static final long serialVersionUID = 1L;

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

Long id =Long.valueOf(request.getParameter("id"));

EmployeeDAO dao = new EmployeeDAO();

int st = dao.delete(id);

List<Employee> employeeList = dao.fetchAll();

request.setAttribute("employeeList", employeeList);

RequestDispatcher rd = request.getRequestDispatcher("/ListEmployees.jsp");

rd.forward(request, response);

}

Data Access Object ConnectionFactory.java

package org.comp.dao;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class ConnectionFactory {

	public static Connection getConnection() {
		Connection c = null;
		try {
			Class.forName("com.mysql.cj.jdbc.Driver");
			c = DriverManager.getConnection("jdbc:mysql://localhost:3306/sspu",
					"sspu_userx25", "MV7GG5TV2312");
		} catch (ClassNotFoundException e) {
			System.out.println("ClassNotFoundException " + e);
		} catch (SQLException e) {
			System.out.println("SQLException " + e);
		}
		return c;
	}
}

package org.comp.dao;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

public class ConnectionFactory {

public static Connection getConnection() {

Connection c = null;

try {

Class.forName("com.mysql.cj.jdbc.Driver");

c = DriverManager.getConnection("jdbc:mysql://localhost:3306/sspu",

"sspu_userx25", "MV7GG5TV2312");

} catch (ClassNotFoundException e) {

System.out.println("ClassNotFoundException " + e);

} catch (SQLException e) {

System.out.println("SQLException " + e);

}

return c;

}

EmployeeDAO.java

package org.comp.dao;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import org.comp.model.Employee;
public class EmployeeDAO {
	Connection con = null;
	PreparedStatement ps = null;
	ResultSet rs = null;
	int st;// status
	public int insert(Employee employee) {
		con = ConnectionFactory.getConnection();
		try {
			String query = "insert into employee(name,department,designation,salary) " + "values(?,?,?,?)";
			ps = con.prepareStatement(query);
			ps.setString(1, employee.getName());
			ps.setString(2, employee.getDepartment());
			ps.setString(3, employee.getDesignation());
			ps.setBigDecimal(4, employee.getSalary());
			st = ps.executeUpdate();
			System.out.println("inserted employee " + st);
		} catch (Exception e) {
			st = -2;
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return st;
	}
	public int update(Employee employee) {
		con = ConnectionFactory.getConnection();
		try {
			String query = "update employee set name=?,department=?,designation=?,salary=? where id=?";
			ps = con.prepareStatement(query);
			ps.setString(1, employee.getName());
			ps.setString(2, employee.getDepartment());
			ps.setString(3, employee.getDesignation());
			ps.setBigDecimal(4, employee.getSalary());
			ps.setLong(5, employee.getId());
			st = ps.executeUpdate();
			System.out.println("Updated employee " + st);
		} catch (Exception e) {
			st = -2;
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return st;
	}
	public List<Employee> fetchAll() {
		List<Employee> employeeList = new ArrayList<Employee>();
		con = ConnectionFactory.getConnection();
		try {
			String query = "select * from employee order by name";
			ps = con.prepareStatement(query);
			rs = ps.executeQuery();
			while (rs.next()) {
				Employee employee = new Employee();
				employee.setId(rs.getLong("id"));
				employee.setName(rs.getString("name"));
				employee.setDepartment(rs.getString("department"));
				employee.setDesignation(rs.getString("designation"));
				employee.setSalary(rs.getBigDecimal("salary"));
				employeeList.add(employee);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return employeeList;
	}
	public Employee fetch(long id) {
		Employee employee = null;
		con = ConnectionFactory.getConnection();
		try {
			String query = "select * from employee where id=?";
			ps = con.prepareStatement(query);
			ps.setLong(1, id);
			rs = ps.executeQuery();
			while (rs.next()) {
				employee = new Employee();
				employee.setId(rs.getLong("id"));
				employee.setName(rs.getString("name"));
				employee.setDepartment(rs.getString("department"));
				employee.setDesignation(rs.getString("designation"));
				employee.setSalary(rs.getBigDecimal("salary"));
				System.out.println(employee);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return employee;
	}
	public int delete(Long id) {
		con = ConnectionFactory.getConnection();
		try {
			String query = "delete from employee where id=?";
			ps = con.prepareStatement(query);
			ps.setLong(1, id);
			st = ps.executeUpdate();
			System.out.println("Deleted employee " + st);
		} catch (Exception e) {
			st = -2;
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return st;
	}
	public int count() {
		int count = 0;
		con = ConnectionFactory.getConnection();
		try {
			String query = "select count(*) from employee";
			ps = con.prepareStatement(query);
			ResultSet rs = ps.executeQuery();
			while (rs.next()) {
				count = rs.getInt(1);
			}
			System.out.println("Total employees " + count);
		} catch (Exception e) {
			st = -2;
			e.printStackTrace();
		} finally {
			try {
				con.close();
			} catch (SQLException ex) {
				ex.printStackTrace();
			}
		}
		return count;
	}
}

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package org.comp.dao;

import java.sql.Connection;

import java.sql.PreparedStatement;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.util.ArrayList;

import java.util.List;

import org.comp.model.Employee;

public class EmployeeDAO {

Connection con = null;

PreparedStatement ps = null;

ResultSet rs = null;

int st;// status

public int insert(Employee employee) {

con = ConnectionFactory.getConnection();

try {

String query = "insert into employee(name,department,designation,salary) " + "values(?,?,?,?)";

ps = con.prepareStatement(query);

ps.setString(1, employee.getName());

ps.setString(2, employee.getDepartment());

ps.setString(3, employee.getDesignation());

ps.setBigDecimal(4, employee.getSalary());

st = ps.executeUpdate();

System.out.println("inserted employee " + st);

} catch (Exception e) {

st = -2;

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return st;

}

public int update(Employee employee) {

con = ConnectionFactory.getConnection();

try {

String query = "update employee set name=?,department=?,designation=?,salary=? where id=?";

ps = con.prepareStatement(query);

ps.setString(1, employee.getName());

ps.setString(2, employee.getDepartment());

ps.setString(3, employee.getDesignation());

ps.setBigDecimal(4, employee.getSalary());

ps.setLong(5, employee.getId());

st = ps.executeUpdate();

System.out.println("Updated employee " + st);

} catch (Exception e) {

st = -2;

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return st;

}

public List<Employee> fetchAll() {

List<Employee> employeeList = new ArrayList<Employee>();

con = ConnectionFactory.getConnection();

try {

String query = "select * from employee order by name";

ps = con.prepareStatement(query);

rs = ps.executeQuery();

while (rs.next()) {

Employee employee = new Employee();

employee.setId(rs.getLong("id"));

employee.setName(rs.getString("name"));

employee.setDepartment(rs.getString("department"));

employee.setDesignation(rs.getString("designation"));

employee.setSalary(rs.getBigDecimal("salary"));

employeeList.add(employee);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return employeeList;

}

public Employee fetch(long id) {

Employee employee = null;

con = ConnectionFactory.getConnection();

try {

String query = "select * from employee where id=?";

ps = con.prepareStatement(query);

ps.setLong(1, id);

rs = ps.executeQuery();

while (rs.next()) {

employee = new Employee();

employee.setId(rs.getLong("id"));

employee.setName(rs.getString("name"));

employee.setDepartment(rs.getString("department"));

employee.setDesignation(rs.getString("designation"));

employee.setSalary(rs.getBigDecimal("salary"));

System.out.println(employee);

}

} catch (Exception e) {

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return employee;

}

public int delete(Long id) {

con = ConnectionFactory.getConnection();

try {

String query = "delete from employee where id=?";

ps = con.prepareStatement(query);

ps.setLong(1, id);

st = ps.executeUpdate();

System.out.println("Deleted employee " + st);

} catch (Exception e) {

st = -2;

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return st;

}

public int count() {

int count = 0;

con = ConnectionFactory.getConnection();

try {

String query = "select count(*) from employee";

ps = con.prepareStatement(query);

ResultSet rs = ps.executeQuery();

while (rs.next()) {

count = rs.getInt(1);

}

System.out.println("Total employees " + count);

} catch (Exception e) {

st = -2;

e.printStackTrace();

} finally {

try {

con.close();

} catch (SQLException ex) {

ex.printStackTrace();

}

return count;

}

HTML Pages ListEmployees.jsp

<%@page import="org.comp.model.Employee"%>
<%@page import="java.util.ArrayList"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Employee List</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link
	href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css"
	rel="stylesheet">
<script
	src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body class="container-fluid">
	<div class="row">
		<jsp:include page="menu.jsp" />
	</div>
	<div class="row">
		<div class="col-2"></div>
		<div class="col-8">
			<h2>List of Employees ${employeeCount}</h2>
			<small></small><a href="AddEmployee.jsp">Add Employee</a></small>
			<table class="table table-bordered">
				<thead>
					<tr>
						<th>#</th>
						<th>Name</th>
						<th>Department</th>
						<th>Designation</th>
						<th>Salary</th>
						<th>Update</th>
						<th>Delete</th>
					</tr>
				</thead>
				<tbody>
					<c:forEach items="${employeeList}" var="employee" varStatus="loop">
						<tr>
							<td>${loop.index+1}</td>
							<td>${employee.name}</td>
							<td>${employee.department}</td>
							<td>${employee.designation}</td>
							<td>${employee.salary}</td>
							<td><a href="update?id=${employee.id}">Update</a></td>
							<td><a href="delete?id=${employee.id}">Delete</a></td>
						</tr>
					</c:forEach>
				</tbody>
			</table>
		</div>
		<div class="col-2"></div>
	</div>
	<div class="row">
		<jsp:include page="footer.jsp"></jsp:include>
	</div>
</body>
</html>

<%@page import="org.comp.model.Employee"%>

<%@page import="java.util.ArrayList"%>

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>

<!DOCTYPE html>

<html>

<head>

<title>Employee List</title>

<link

href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"

rel="stylesheet">

<script

src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>

</head>

<jsp:include page="menu.jsp" />

</div>

<h2>List of Employees ${employeeCount}</h2>

<small></small><a href="AddEmployee.jsp">Add Employee</a></small>

<thead>

<tr>

<th>Department</th>

<th>Designation</th>

<th>Salary</th>

<th>Update</th>

<th>Delete</th>

</tr>

</thead>

<tbody>

<c:forEach items="${employeeList}" var="employee" varStatus="loop">

<tr>

<td>${loop.index+1}</td>

<td>${employee.name}</td>

<td>${employee.department}</td>

<td>${employee.designation}</td>

<td>${employee.salary}</td>

<td><a href="update?id=${employee.id}">Update</a></td>

<td><a href="delete?id=${employee.id}">Delete</a></td>

</tr>

</c:forEach>

</tbody>

</table>

</div>

</div>

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

</div>

</body>

</html>

AddEmployee.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link
	href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css"
	rel="stylesheet">
<script
	src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body class="container-fluid">
	<div class="row">
		<jsp:include page="menu.jsp" />
	</div>
	<div class="row">
		<div class="col-2"></div>
		<div class="col-8">
			<h2>Add New Employee</h2>
			<form id="add-employee" action="add-employee" method="post">
				<div class="mb-3 mt-3">
					<label for="name">Name</label> <input type="text"
						class="form-control" id="name" placeholder="Name" name="name"
						required>
				</div>
				<div class="mb-3">
					<label for="department">Department</label> <input type="text"
						class="form-control" id="department"
						placeholder="Enter Department" name="department" required />
				</div>
				<div class="mb-3 mt-3">
					<label for="designation">Designation</label> <input type="text"
						class="form-control" id="designation"
						placeholder="Enter Designation" name="designation" required />
				</div>
				<div class="mb-3">
					<label for="salary">Salary</label> <input type="number"
						class="form-control" id="salary" placeholder="Enter Salary"
						name="salary" required />
				</div>
				<button type="submit" class="btn btn-primary">Add Employee</button>
			</form>
		</div>
		<div class="col-2"></div>
	</div>
	<div class="row">
		<jsp:include page="footer.jsp" />
	</div>
</body>
</html>

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<!DOCTYPE html>

<html>

<head>

<title>Insert title here</title>

<link

href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"

rel="stylesheet">

<script

src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>

</head>

<jsp:include page="menu.jsp" />

</div>

<h2>Add New Employee</h2>

<label for="name">Name</label> <input type="text"

class="form-control" id="name" placeholder="Name" name="name"

required>

</div>

<label for="department">Department</label> <input type="text"

class="form-control" id="department"

placeholder="Enter Department" name="department" required />

</div>

<label for="designation">Designation</label> <input type="text"

class="form-control" id="designation"

placeholder="Enter Designation" name="designation" required />

</div>

<label for="salary">Salary</label> <input type="number"

class="form-control" id="salary" placeholder="Enter Salary"

name="salary" required />

</div>

<button type="submit" class="btn btn-primary">Add Employee</button>

</form>

</div>

</div>

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

</div>

</body>

</html>

UpdateEmployee.jsp

<%@page import="org.comp.model.Employee"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
	pageEncoding="ISO-8859-1"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="ISO-8859-1">
<title>Insert title here</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link
	href="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/css/bootstrap.min.css"
	rel="stylesheet">
<script
	src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body class="container-fluid">
	<div class="row">
		<jsp:include page="menu.jsp" />
	</div>
	<div class="row">
		<div class="col-2"></div>
		<div class="col-8">
			<h2>Update Employee</h2>
			<form id="update-employee" action="update-employee" method="post">
				<div class="mb-3 mt-3">
					<label for="name">Name</label> <input type="text"
						class="form-control" id="name" placeholder="Name" name="name"
						value="${employee.name}" required /> <input type="hidden"
						name="id" value="${employee.id}" />
				</div>
				<div class="mb-3">
					<label for="department">Department</label> <input type="text"
						class="form-control" id="department"
						placeholder="Enter Department" name="department"
						value="${employee.department}" required />
				</div>
				<div class="mb-3 mt-3">
					<label for="designation">Designation</label> <input type="text"
						class="form-control" id="designation"
						placeholder="Enter Designation" name="designation"
						value="${employee.designation}" required />
				</div>
				<div class="mb-3">
					<label for="salary">Salary</label> <input type="number"
						class="form-control" id="salary" placeholder="Enter Salary"
						name="salary" value=${employee.salary } required />
				</div>
				<button type="submit" class="btn btn-primary">Update
					Employee</button>
			</form>
		</div>
		<div class="col-2"></div>
	</div>
	<div class="row">
		<jsp:include page="footer.jsp" />
	</div>
</body>
</html>

<%@page import="org.comp.model.Employee"%>

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"

pageEncoding="ISO-8859-1"%>

<!DOCTYPE html>

<html>

<head>

<title>Insert title here</title>

<link

href="https://cdn.jsdelivr.net/npm/[email protected]/dist/css/bootstrap.min.css"

rel="stylesheet">

<script

src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>

</head>

<jsp:include page="menu.jsp" />

</div>

<h2>Update Employee</h2>

<label for="name">Name</label> <input type="text"

class="form-control" id="name" placeholder="Name" name="name"

value="${employee.name}" required /> <input type="hidden"

name="id" value="${employee.id}" />

</div>

<label for="department">Department</label> <input type="text"

class="form-control" id="department"

placeholder="Enter Department" name="department"

value="${employee.department}" required />

</div>

<label for="designation">Designation</label> <input type="text"

class="form-control" id="designation"

placeholder="Enter Designation" name="designation"

value="${employee.designation}" required />

</div>

<label for="salary">Salary</label> <input type="number"

class="form-control" id="salary" placeholder="Enter Salary"

name="salary" value=${employee.salary } required />

</div>

<button type="submit" class="btn btn-primary">Update

Employee</button>

</form>

</div>

</div>

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

</div>

</body>

</html>

menu.jsp

<nav class="navbar navbar-expand-lg navbar-dark bg-dark">
	<div class="container-fluid">
		<a class="navbar-brand" href="#">Employee Management</a>
		<button class="navbar-toggler" type="button" data-bs-toggle="collapse" data-bs-target="#navbarNavDarkDropdown" aria-controls="navbarNavDarkDropdown" aria-expanded="false" aria-label="Toggle navigation">
			<span class="navbar-toggler-icon"></span>
		</button>
		<div class="collapse navbar-collapse" id="navbarNavDarkDropdown">
			<ul class="navbar-nav me-auto mb-2 mb-lg-0">
				<li class="nav-item"><a class="nav-link active" aria-current="page" href="/EmployeeManagement">Home</a></li>
				<li class="nav-item"><a class="nav-link active" aria-current="page" href="/EmployeeManagement">Show</a></li>
				<li class="nav-item"><a class="nav-link active" aria-current="page" href="AddEmployee.jsp">Add</a></li>
			</ul>
		</div>
	</div>
</nav>

<a class="navbar-brand" href="#">Employee Management</a>

</button>

</ul>

</div>

</nav>

footer.jsp

<div class="container">
	<footer class="py-3 my-4">
		<ul class="nav justify-content-center border-bottom pb-3 mb-3">
			<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">Home</a></li>
			<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">Features</a></li>
			<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">About</a></li>
			<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">Contact</a></li>
			<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">FAQ's</a></li>
		</ul>
		<p class="text-center text-muted">© 2021 Company, Inc</p>
	</footer>
</div>

<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">Features</a></li>

<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">About</a></li>

<li class="nav-item"><a href="#" class="nav-link px-2 text-muted">Contact</a></li>

</ul>

</footer>

</div>

Sending data to servlet using http get method

May 15, 2023May 15, 2023 by manish

Gererally http get is used to get information from server, but for getting specific information based on id or user name or based on query string we send id,user name or search term query to server. Here we have created a form tag and two text box to take input age and name from user. … Read more

Submitting data to servlet using http post

May 15, 2023May 15, 2023 by manish

Data sent using http post method is not visible at browser address bar index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;

1	<%@page contentType="text/html" pageEncoding="UTF-8"%>

All the services of this website is free. Before using the services you have to register Provide all details Fname Lname Mail Id Mobile No DOB

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns = {"/register"})
public class Register extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            String name = request.getParameter("fname") + " " + request.getParameter("lname");
            String mailId = request.getParameter("mailId");
            String mobileNo = request.getParameter("mobileNo");
            String dob = request.getParameter("dob");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet(urlPatterns = {"/register"})

public class Register extends HttpServlet {

@Override

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

try {

String name = request.getParameter("fname") + " " + request.getParameter("lname");

String mailId = request.getParameter("mailId");

String mobileNo = request.getParameter("mobileNo");

String dob = request.getParameter("dob");

out.println("");

out.println("

Your Registration Detail

");
            out.println("

1 2	"); out.println("

Name :” + name + “

");
            out.println("

1 2	"); out.println("

Request dispatcher forwarding request

May 15, 2023May 15, 2023 by manish

For login example we are using user mail id and password. if both are correct then we are forwaring to home.jsp page if any on of mail id or password is in correct then it will forwarded back to index.jsp page with appropriate error message. index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;

1	<%@page contentType="text/html" pageEncoding="UTF-8"%>

getting all request parameters in servlet

May 15, 2023May 15, 2023 by manish

before this we have used request.getParameter(String) which is used to get a single request parameter value. Now if we want to get all parameter names then we have to use request.getParameterNames() it returns Enumeration of String objects of all parameter names. After getting all parameter names we can get its value using request.getParameter(String) . request.getParameterNames() … Read more

Getting parameter values in Servlet getParameterNames

May 15, 2023May 15, 2023 by manish

Project Explorer : index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;

1	<%@page contentType="text/html" pageEncoding="UTF-8"%>

Getting all parameter values in servlet Name: Contact No: Email: Web site

ParameterValues.java

package com.ebhor.parametervalues;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "ParameterValues", urlPatterns = {"/parametervalues"})
public class ParameterValues extends HttpServlet {

    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {

            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            Enumeration parameterNames = request.getParameterNames();
            out.println("

package com.ebhor.parametervalues;

import java.io.IOException;

import java.io.PrintWriter;

import java.util.Enumeration;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "ParameterValues", urlPatterns = {"/parametervalues"})

public class ParameterValues extends HttpServlet {

protected void processRequest(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

try {

out.println("");

Enumeration parameterNames = request.getParameterNames();

out.println("

Parameter name and values are

");
            while (parameterNames.hasMoreElements()) {
                String parameterName = parameterNames.nextElement();
                out.println("

");

while (parameterNames.hasMoreElements()) {

String parameterName = parameterNames.nextElement();

out.println("

“+parameterName+”

");
                String[] values = request.getParameterValues(parameterName);
                for (String value : values) {
                    out.println( value+"
");
                }
            }
            out.println("");
            out.println("");
        } finally {
            out.close();
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }
}

");

String[] values = request.getParameterValues(parameterName);

for (String value : values) {

out.println( value+"

");

}

out.println("");

} finally {

out.close();

}

@Override

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

processRequest(request, response);

}

@Override

protected void doPost(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

processRequest(request, response);

}

pom.xml

    4.0.0

    com.ebhor
    parameterValues
    1.0-SNAPSHOT
    war

    parameterValues

    
        ${project.build.directory}/endorsed
        UTF-8
    

    
        
            javax
            javaee-web-api
            6.0
            provided
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                2.3.2
                
                    1.6
                    1.6
                    
                        ${endorsed.dir}
                    
                
            
            
                org.apache.maven.plugins
                maven-war-plugin
                2.1.1
                
                    false
                
            
            
                org.apache.maven.plugins
                maven-dependency-plugin
                2.1
                
                    
                        validate
                        
                            copy
                        
                        
                            ${endorsed.dir}
                            true
                            
                                
                                    javax
                                    javaee-endorsed-api
                                    6.0
                                    jar

4.0.0

com.ebhor

parameterValues

1.0-SNAPSHOT

war

parameterValues

${project.build.directory}/endorsed

UTF-8

javax

javaee-web-api

6.0

provided

org.apache.maven.plugins

maven-compiler-plugin

2.3.2

1.6

${endorsed.dir}

org.apache.maven.plugins

maven-war-plugin

2.1.1

false

org.apache.maven.plugins

maven-dependency-plugin

2.1

validate

copy

${endorsed.dir}

true

javax

javaee-endorsed-api

6.0

jar

Result

Servlet Annotation WebServlet Example

May 2, 2023May 2, 2023 by manish

The first example is to show Servlet Welcome using Servlet Annotation WebServlet. For this we have created an index.html page on index.html we have created a link. On clicking on link it will call welcome servlet. Our project directory structure is as per below index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;

1	<%@page contentType="text/html" pageEncoding="UTF-8"%>

Show welcome servlet

Welcome.java

package ebhor.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "Welcome", urlPatterns = {"/welcome"})
public class Welcome extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("");
            out.println("

package ebhor.servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.annotation.WebServlet;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

@WebServlet(name = "Welcome", urlPatterns = {"/welcome"})

public class Welcome extends HttpServlet {

@Override

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

try {

out.println("");

out.println("

Servlet Welcome

");
            out.println("");
            out.println("");
        } finally {
            out.close();
        }
    }

}

");

out.println("");

} finally {

out.close();

}

Servlet url and class mapping using web.xml

May 2, 2023May 2, 2023 by manish

We can map url pattern with servlet class at web.xml. Following example will illustrate this. Project directory structure is as below: index.jsp

&lt;%@page contentType="text/html" pageEncoding="UTF-8"%&gt;


    
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    
    


<h1>Configuration using web.xml</h1>


        <a href="welcome1">Show Welcome1</a>

<%@page contentType="text/html" pageEncoding="UTF-8"%>

<h1>Configuration using web.xml</h1>

<a href="welcome1">Show Welcome1</a>

web.xml

<!--?xml version="1.0" encoding="UTF-8"?-->

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">
   

    <display-name>Servlet Tutorial 1</display-name>
    <description>
        This is a simple web application. To map url with srvlet class at web.xml
    </description>

    <servlet>
        <servlet-name>welcome</servlet-name>
        <servlet-class>ebhor.servlet.Welcome1</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>welcome</servlet-name>
        <url-pattern>/welcome1</url-pattern>
    </servlet-mapping>

</web-app>

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

<display-name>Servlet Tutorial 1</display-name>

This is a simple web application. To map url with srvlet class at web.xml

</description>

<servlet-name>welcome</servlet-name>

<servlet-class>ebhor.servlet.Welcome1</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>welcome</servlet-name>

<url-pattern>/welcome1</url-pattern>

</servlet-mapping>

</web-app>

Welcome1.java

package ebhor.servlet;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Welcome1 extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();
        try {
            out.println("");
            out.println("");
            out.println("");
            out.println("<title>Servlet Welcome1</title>");
            out.println("");
            out.println("");
            out.println("

<h1>Servlet Welcome1</h1>

");
            out.println("");
            out.println("");
        } finally {
            out.close();
        }
    }
}

package ebhor.servlet;

import java.io.IOException;

import java.io.PrintWriter;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class Welcome1 extends HttpServlet {

@Override

protected void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

response.setContentType("text/html;charset=UTF-8");

PrintWriter out = response.getWriter();

try {

out.println("");

out.println("<title>Servlet Welcome1</title>");

out.println("");

out.println("

<h1>Servlet Welcome1</h1>

");

out.println("");

} finally {

out.close();

}

In web.xml url pattern(welcome1) will match to a logical name(welcome) that logical name is matched with servlet fully qualified class name(ebhor.servlet.Welcome1). Result:

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