crud-servlet-jsp

.idea/.gitignore

+# Default ignored files
+/shelf/
+/workspace.xml

.idea/compiler.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <annotationProcessing>
+      <profile name="Maven default annotation processors profile" enabled="true">
+        <sourceOutputDir name="target/generated-sources/annotations" />
+        <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
+        <outputRelativeToContentRoot value="true" />
+        <module name="studentapp" />
+        <module name="student-jsp-servlet-master" />
+      </profile>
+    </annotationProcessing>
+  </component>
+</project>
\ No newline at end of file

.idea/encodings.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="file://$PROJECT_DIR$/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/src/main/resources" charset="UTF-8" />
+  </component>
+</project>
\ No newline at end of file

.idea/jarRepositories.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RemoteRepositoriesConfiguration">
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Central Repository" />
+      <option name="url" value="https://repo.maven.apache.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="central" />
+      <option name="name" value="Maven Central repository" />
+      <option name="url" value="https://repo1.maven.org/maven2" />
+    </remote-repository>
+    <remote-repository>
+      <option name="id" value="jboss.community" />
+      <option name="name" value="JBoss Community repository" />
+      <option name="url" value="https://repository.jboss.org/nexus/content/repositories/public/" />
+    </remote-repository>
+  </component>
+</project>
\ No newline at end of file

.idea/misc.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="MavenProjectsManager">
+    <option name="originalFiles">
+      <list>
+        <option value="$PROJECT_DIR$/pom.xml" />
+      </list>
+    </option>
+  </component>
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="corretto-1.8" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/out" />
+  </component>
+</project>
\ No newline at end of file

.idea/uiDesigner.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Palette2">
+    <group name="Swing">
+      <item class="com.intellij.uiDesigner.HSpacer" tooltip-text="Horizontal Spacer" icon="/com/intellij/uiDesigner/icons/hspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="1" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="com.intellij.uiDesigner.VSpacer" tooltip-text="Vertical Spacer" icon="/com/intellij/uiDesigner/icons/vspacer.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="1" anchor="0" fill="2" />
+      </item>
+      <item class="javax.swing.JPanel" icon="/com/intellij/uiDesigner/icons/panel.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JScrollPane" icon="/com/intellij/uiDesigner/icons/scrollPane.svg" removable="false" auto-create-binding="false" can-attach-label="true">
+        <default-constraints vsize-policy="7" hsize-policy="7" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JButton" icon="/com/intellij/uiDesigner/icons/button.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="0" fill="1" />
+        <initial-values>
+          <property name="text" value="Button" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JRadioButton" icon="/com/intellij/uiDesigner/icons/radioButton.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="RadioButton" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JCheckBox" icon="/com/intellij/uiDesigner/icons/checkBox.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="3" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="CheckBox" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JLabel" icon="/com/intellij/uiDesigner/icons/label.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="8" fill="0" />
+        <initial-values>
+          <property name="text" value="Label" />
+        </initial-values>
+      </item>
+      <item class="javax.swing.JTextField" icon="/com/intellij/uiDesigner/icons/textField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JPasswordField" icon="/com/intellij/uiDesigner/icons/passwordField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JFormattedTextField" icon="/com/intellij/uiDesigner/icons/formattedTextField.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1">
+          <preferred-size width="150" height="-1" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextArea" icon="/com/intellij/uiDesigner/icons/textArea.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTextPane" icon="/com/intellij/uiDesigner/icons/textPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JEditorPane" icon="/com/intellij/uiDesigner/icons/editorPane.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JComboBox" icon="/com/intellij/uiDesigner/icons/comboBox.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="2" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JTable" icon="/com/intellij/uiDesigner/icons/table.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JList" icon="/com/intellij/uiDesigner/icons/list.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="2" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTree" icon="/com/intellij/uiDesigner/icons/tree.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3">
+          <preferred-size width="150" height="50" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JTabbedPane" icon="/com/intellij/uiDesigner/icons/tabbedPane.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSplitPane" icon="/com/intellij/uiDesigner/icons/splitPane.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="3" hsize-policy="3" anchor="0" fill="3">
+          <preferred-size width="200" height="200" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JSpinner" icon="/com/intellij/uiDesigner/icons/spinner.svg" removable="false" auto-create-binding="true" can-attach-label="true">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSlider" icon="/com/intellij/uiDesigner/icons/slider.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="8" fill="1" />
+      </item>
+      <item class="javax.swing.JSeparator" icon="/com/intellij/uiDesigner/icons/separator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="6" anchor="0" fill="3" />
+      </item>
+      <item class="javax.swing.JProgressBar" icon="/com/intellij/uiDesigner/icons/progressbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JToolBar" icon="/com/intellij/uiDesigner/icons/toolbar.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="6" anchor="0" fill="1">
+          <preferred-size width="-1" height="20" />
+        </default-constraints>
+      </item>
+      <item class="javax.swing.JToolBar$Separator" icon="/com/intellij/uiDesigner/icons/toolbarSeparator.svg" removable="false" auto-create-binding="false" can-attach-label="false">
+        <default-constraints vsize-policy="0" hsize-policy="0" anchor="0" fill="1" />
+      </item>
+      <item class="javax.swing.JScrollBar" icon="/com/intellij/uiDesigner/icons/scrollbar.svg" removable="false" auto-create-binding="true" can-attach-label="false">
+        <default-constraints vsize-policy="6" hsize-policy="0" anchor="0" fill="2" />
+      </item>
+    </group>
+  </component>
+</project>
\ No newline at end of file

.idea/vcs.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.example</groupId>
+  <artifactId>studentapp</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>war</packaging>
+
+  <name>studentapp Maven Webapp</name>
+  <!-- FIXME change it to the project's website -->
+  <url>http://www.example.com</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.7</maven.compiler.source>
+    <maven.compiler.target>1.7</maven.compiler.target>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.11</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>mysql</groupId>
+      <artifactId>mysql-connector-java</artifactId>
+      <version>8.0.29</version>
+    </dependency>
+    <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
+    <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
+      <version>4.0.1</version>
+      <scope>provided</scope>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <finalName>studentapp</finalName>
+    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+      <plugins>
+        <plugin>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.1.0</version>
+        </plugin>
+        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
+        <plugin>
+          <artifactId>maven-resources-plugin</artifactId>
+          <version>3.0.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.8.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-surefire-plugin</artifactId>
+          <version>2.22.1</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-war-plugin</artifactId>
+          <version>3.2.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-install-plugin</artifactId>
+          <version>2.5.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-deploy-plugin</artifactId>
+          <version>2.8.2</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+  </build>
+</project>

src/main/java/com/qadeer/web/dao/StudentDao.java

+package com.qadeer.web.dao;
+
+import com.qadeer.web.model.Student;
+
+import java.util.*;
+import java.sql.*;
+
+public class StudentDao {
+    public static int create(Student e){
+        int status=0;
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.createQuery);
+            ps.setString(1,e.getName());
+            ps.setInt(2,e.getRollno());
+            ps.setInt(3,e.getAge());
+            status=ps.executeUpdate();
+
+            con.close();
+            con.isClosed()
+        }catch(Exception ex){ex.getMessage();}
+
+        return status;
+    }
+    public static int update(Student e){
+        int status=0;
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.updateQuery);
+            ps.setString(1,e.getName());
+            ps.setInt(2,e.getRollno());
+            ps.setInt(3,e.getAge());
+            ps.setInt(4,e.getId());
+
+            status=ps.executeUpdate();
+
+            con.close();
+        }catch(Exception ex){ex.getMessage();}
+
+        return status;
+    }
+    public static int delete(int id){
+        int status=0;
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.deleteQuery);
+            ps.setInt(1,id);
+            status=ps.executeUpdate();
+
+            con.close();
+        }catch(Exception e){e.getMessage();}
+
+        return status;
+    }
+    public static Student getStudentById(int id){
+        Student myStudent=new Student();
+
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.readQuery);
+            ps.setInt(1,id);
+            ResultSet rs=ps.executeQuery();
+            if(rs.next()){
+                myStudent.setId(rs.getInt(1));
+                myStudent.setName(rs.getString(2));
+                myStudent.setRollno(rs.getInt(3));
+                myStudent.setAge(rs.getInt(4));
+            }
+            con.close();
+        }catch(Exception ex){ex.getMessage(); }
+
+        return myStudent;
+    }
+    public static Student getStudentByRollNo(int rollNo){
+        Student myStudent=new Student();
+
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.readRollNoQuery);
+            ps.setInt(1,rollNo);
+            ResultSet rs=ps.executeQuery();
+            if(rs.next()){
+                myStudent.setId(rs.getInt(1));
+                myStudent.setName(rs.getString(2));
+                myStudent.setRollno(rs.getInt(3));
+                myStudent.setAge(rs.getInt(4));
+            }
+            con.close();
+        }catch(Exception ex){ex.getMessage();}
+
+        return myStudent;
+    }
+    public static List<Student> getAllStudents(){
+        List<Student> list=new ArrayList<Student>();
+
+        try{
+            Connection con= UtilityDao.getConnection();
+            PreparedStatement ps=con.prepareStatement(UtilityDao.readAllQuery);
+            ResultSet rs=ps.executeQuery();
+            while(rs.next()){
+                Student myStudent=new Student();
+                myStudent.setId(rs.getInt(1));
+                myStudent.setName(rs.getString(2));
+                myStudent.setRollno(rs.getInt(3));
+                myStudent.setAge(rs.getInt(4));
+                list.add(myStudent);
+            }
+            con.close();
+        }catch(Exception ex){
+            ex.getMessage();
+        }
+
+        return list;
+    }
+}
\ No newline at end of file

src/main/java/com/qadeer/web/dao/UtilityDao.java

+package com.qadeer.web.dao;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+
+public class UtilityDao {
+
+    public static Connection getConnection(){
+        Connection con=null;
+        if(Connection.){
+
+        }
+        try{
+            Class.forName("com.mysql.cj.jdbc.Driver");
+            con= DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb","root","root1234"); //
+        }catch(Exception e){System.out.println(e.getMessage());}
+        return con;
+    }
+
+    static String createQuery = "insert into student(name,rollno,age) values (?,?,?)";
+    static String updateQuery = "update student set name=?,rollno=?,age=? where id=?";
+    static String deleteQuery = "delete from student where id=?";
+    static String readQuery = "select * from student where id=?";
+    static String readAllQuery = "select * from student";
+    static String readRollNoQuery = "select * from student where rollNo=?";
+
+}

src/main/java/com/qadeer/web/model/Student.java

+package com.qadeer.web.model;
+
+public class Student {
+    private int id;
+    private String name;
+    private int rollno;
+
+    public int getAge() {
+        return age;
+    }
+
+    public void setAge(int age) {
+        this.age = age;
+    }
+
+    private int age;
+
+    public int getRollno() {
+        return rollno;
+    }
+
+    public void setRollno(int rollno) {
+        this.rollno = rollno;
+    }
+
+
+    public int getId() {
+        return id;
+    }
+    public void setId(int id) {
+        this.id = id;
+    }
+    public String getName() {
+        return name;
+    }
+    public void setName(String name) {
+        this.name = name;
+    }
+
+
+
+
+}
\ No newline at end of file

src/main/java/com/qadeer/web/servlet/CreateServlet.java

+package com.qadeer.web.servlet;
+
+import com.qadeer.web.dao.StudentDao;
+import com.qadeer.web.model.Student;
+
+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("/CreateServlet")
+public class CreateServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+        response.setContentType("text/html");
+        PrintWriter out=response.getWriter();
+
+        String name=request.getParameter("name");
+        int rollno = Integer.parseInt(request.getParameter("rollno"));
+        int age = Integer.parseInt(request.getParameter("age"));
+
+        Student myStudent = new Student();
+        myStudent.setName(name);
+        myStudent.setRollno(rollno);
+        myStudent.setAge(age);
+
+        int status= StudentDao.create(myStudent);
+        if(status>0){
+            out.print("<p>Student Created successfully!</p>");
+            request.getRequestDispatcher("index.html").include(request, response);
+        }else{
+            out.println("Student Entry Failed!. Please check if the rollno is unique");
+        }
+
+        out.close();
+    }
+
+}

src/main/java/com/qadeer/web/servlet/DeleteServlet.java

+package com.qadeer.web.servlet;
+
+import com.qadeer.web.dao.StudentDao;
+
+import java.io.IOException;
+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("/DeleteServlet")
+public class DeleteServlet extends HttpServlet {
+    protected void doGet(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+        String stringId=request.getParameter("id");
+        int id=Integer.parseInt(stringId);
+        StudentDao.delete(id);
+        response.sendRedirect("view.jsp");
+    }
+}
\ No newline at end of file

src/main/java/com/qadeer/web/servlet/ReadServlet.java

+package com.qadeer.web.servlet;
+
+import com.qadeer.web.dao.StudentDao;
+import com.qadeer.web.model.Student;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+
+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;
+
+
+@WebServlet("/ReadServlet")
+public class ReadServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+        response.setContentType("text/html");
+        PrintWriter out=response.getWriter();
+
+        int rollno = Integer.parseInt(request.getParameter("rollno"));
+        Student myStudent = StudentDao.getStudentByRollNo(rollno);
+
+        request.setAttribute("student", myStudent);
+        RequestDispatcher rd = request.getRequestDispatcher("read.jsp");
+        rd.forward(request, response);
+
+
+        out.close();
+    }
+
+}
\ No newline at end of file

src/main/java/com/qadeer/web/servlet/UpdateServlet.java

+package com.qadeer.web.servlet;
+
+import com.qadeer.web.dao.StudentDao;
+import com.qadeer.web.model.Student;
+
+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("/UpdateServlet")
+public class UpdateServlet extends HttpServlet {
+    protected void doPost(HttpServletRequest request, HttpServletResponse response)
+            throws ServletException, IOException {
+        response.setContentType("text/html");
+        PrintWriter out=response.getWriter();
+
+        int id = Integer.parseInt(request.getParameter("id"));
+        String name = request.getParameter("name");
+        int rollno = Integer.parseInt(request.getParameter("rollno"));
+        int age = Integer.parseInt(request.getParameter("age"));
+
+
+        Student myStudent = new Student();
+        myStudent.setId(id);
+        myStudent.setName(name);
+        myStudent.setRollno(rollno);
+        myStudent.setAge(age);
+
+        int status = StudentDao.update(myStudent);
+        if(status>0){
+            response.sendRedirect("view.jsp");
+        }else{
+            out.println("Sorry! unable to update record");
+        }
+
+        out.close();
+    }
+
+}
\ No newline at end of file

src/main/webapp/WEB-INF/web.xml

+<!DOCTYPE web-app PUBLIC
+ "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
+ "http://java.sun.com/dtd/web-app_2_3.dtd" >
+
+<web-app>
+  <display-name>Archetype Created Web Application</display-name>
+</web-app>

src/main/webapp/edit.jsp

+<%@ page import = "com.qadeer.web.dao.StudentDao, com.qadeer.web.model.Student"%>
+<%@ page import = "java.io.IOException, java.io.PrintWriter"%>
+
+<h1>Update Student</h1>
+
+<% String sid=request.getParameter("id");
+int id=Integer.parseInt(sid);
+Student e= StudentDao.getStudentById(id);
+%>
+
+<form action='UpdateServlet' method='post'>
+<table>
+<%
+    out.print("<tr><td></td><td><input type='hidden' name='id' value='"+e.getId()+"'/></td></tr>");
+    out.print("<tr><td>Name:</td><td><input type='text' name='name' value='"+e.getName()+"'/></td></tr>");
+    out.print("<tr><td>RollNo:</td><td><input type='rollno' name='rollno' value='"+e.getRollno()+"'/></td></tr>");
+    out.print("<tr><td>Age:</td><td><input type='age' name='age' value='"+e.getAge()+"'/></td></tr>");
+    out.print("</select>");
+%>
+</td></tr>
+<tr><td colspan='2'><input type='submit' value='Edit & Save '/></td></tr>
+</table>
+</form>
+
+ <% out.close();%>
+    }
+}
\ No newline at end of file

src/main/webapp/index.jsp

+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="ISO-8859-1">
+<title>Student app</title>
+</head>
+<body>
+<a href="view.jsp">view all students</a>
+
+<h1>Add New Student</h1>
+<form action="CreateServlet" method="post">
+<table>
+<tr><td>Name:</td><td><input type="text" name="name"/></td></tr>
+<tr><td>RollNo:</td><td><input type="rollno" name="rollno"/></td></tr>
+<tr><td>Age:</td><td><input type="age" name="age"/></td></tr>
+</td></tr>
+<tr><td colspan="2"><input type="submit" value="Save Student"/></td></tr>
+</table>
+</form>
+
+<h1>Search Student by Rollno</h1>
+<form action="ReadServlet" method="post">
+<table>
+<tr><td>RollNo:</td><td><input type="rollno" name="rollno"/></td></tr>
+<tr><td colspan="2"><input type="submit" value="Search student"/></td></tr>
+</table>
+</form>
+<br/>
+
+</body>
+</html>
\ No newline at end of file

src/main/webapp/read.jsp

+<%@page import = "com.qadeer.web.model.Student"%>
+<%@page import = "com.qadeer.web.dao.StudentDao"%>
+<%@page import = "java.util.*"%>
+<html>
+<body>
+<h1>Student information</h1>
+<table border='1' width='100%'>
+<tr><th>Id</th><th>Name</th><th>RollNo</th><th>Age</th></tr>
+
+<%
+    Student e = (Student) request.getAttribute("student");
+    out.print("<tr><td>"+e.getId()+"</td><td>"+e.getName()+"</td><td>"+e.getRollno()+"</td><td>"+e.getAge()+"</td><td>" + "</td><td><a href='edit.jsp?id="+e.getId()+"'>edit</a></td><td><a href='DeleteServlet?id="+e.getId()+"'>delete</a></td></tr>");
+%>
+</table>
+</body>
+</html>
\ No newline at end of file

src/main/webapp/view.jsp

+<%@page import = "com.qadeer.web.model.Student"%>
+<%@page import = "com.qadeer.web.dao.StudentDao"%>
+<%@page import = "java.util.*"%>
+<html>
+<body>
+<h1>Student List</h1>
+<table border='1' width='100%'>
+<tr><th>Id</th><th>Name</th><th>RollNo</th><th>Age</th></tr>
+<%
+
+    List<Student> list = StudentDao.getAllStudents();
+    for(Student e:list){
+       out.print("<tr><td>"+e.getId()+"</td><td>"+e.getName()+"</td><td>"+e.getRollno()+"</td><td>"+e.getAge()+"</td><td>" + "<a href='edit.jsp?id="+e.getId()+"'>edit</a></td><td><a href='DeleteServlet?id="+e.getId()+"'>delete</a></td></tr>");
+    }
+%>
+</table>
+</body>
+</html>
\ No newline at end of file