Hi chitra,


This is modified code.


package appletexample;

import javax.swing.*;
import java.awt.*;
import java.sql.*;
import java.awt.KeyboardFocusManager;
import java.awt.event.KeyEvent;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.util.HashSet;
import java.util.Set;
import javax.swing.JOptionPane;
import javax.swing.KeyStroke;


public class StudentRecord extends javax.swing.JFrame {
public StudentRecord() {
initComponents();
}
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
idfield = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
namefield = new javax.swing.JTextField();
jLabel4 = new javax.swing.JLabel();
agefield = new javax.swing.JTextField();
jLabel5 = new javax.swing.JLabel();
sexfield = new javax.swing.JTextField();
titlefield = new javax.swing.JComboBox();
jPanel2 = new javax.swing.JPanel();
jLabel6 = new javax.swing.JLabel();
placefield = new javax.swing.JTextField();
jLabel7 = new javax.swing.JLabel();
towncityfield = new javax.swing.JTextField();
jLabel8 = new javax.swing.JLabel();
codefield = new javax.swing.JTextField();
phonefield = new javax.swing.JTextField();
jLabel9 = new javax.swing.JLabel();
mobilefield = new javax.swing.JTextField();
jLabel10 = new javax.swing.JLabel();
emailfield = new javax.swing.JTextField();
savebutton = new javax.swing.JButton();
exitbutton = new javax.swing.JButton();
resetbutton = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setTitle("Student Details");
setName("frame"); // NOI18N
setResizable(false);
addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
formKeyPressed(evt);
}
});

------------------------------

jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Personal Details", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 14)));
jPanel1.setFont(new java.awt.Font("Tahoma", 1, 14));
jLabel1.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel1.setText("ID");
idfield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel2.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel2.setText("NAME");
namefield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel4.setFont(new java.awt.Font("Tahoma", 1, 14));
jLabel4.setText("AGE");
agefield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel5.setFont(new java.awt.Font("Tahoma", 1, 14));
jLabel5.setText("SEX");
sexfield.setFont(new java.awt.Font("Tahoma", 0, 12));
titlefield.setFont(new java.awt.Font("Tahoma", 1, 12));
titlefield.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Mr", "Miss", "Mrs" }));
titlefield.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
titlefieldActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup().addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup().addGap(18, 18, 18)
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 32, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(idfield, javax.swing.GroupLayout.PREFERRED_SIZE, 161, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel4))
.addGap(16, 16, 16)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(titlefield, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(agefield, javax.swing.GroupLayout.PREFERRED_SIZE, 52, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(sexfield, javax.swing.GroupLayout.PREFERRED_SIZE, 119, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(namefield, javax.swing.GroupLayout.PREFERRED_SIZE, 170, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGap(180, 180, 180))

jPanel1Layout.setVerticalGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(idfield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(titlefield, javax.swing.GroupLayout.PREFERRED_SIZE, 21, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(namefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(agefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5)
.addComponent(sexfield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(28, Short.MAX_VALUE)));
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Address", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 1, 14)));
jLabel6.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel6.setText("PLACE");
placefield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel7.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel7.setText("TOWN/CITY");
towncityfield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel8.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel8.setText("PHONE NO");
codefield.setFont(new java.awt.Font("Tahoma", 0, 12));
phonefield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel9.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel9.setText("MOBILE NO");
mobilefield.setFont(new java.awt.Font("Tahoma", 0, 12));
jLabel10.setFont(new java.awt.Font("Tahoma", 1, 12));
jLabel10.setText("EMAIL ID");
emailfield.setFont(new java.awt.Font("Tahoma", 0, 12));
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);

jPanel2Layout.setHorizontalGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel7).addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(towncityfield, javax.swing.GroupLayout.PREFERRED_SIZE, 350, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel6, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(placefield, javax.swing.GroupLayout.PREFERRED_SIZE, 350, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jLabel8)
.addGap(18, 18, 18)
.addComponent(codefield, javax.swing.GroupLayout.PREFERRED_SIZE, 107, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jLabel10, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel9, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(emailfield, javax.swing.GroupLayout.PREFERRED_SIZE, 350, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(phonefield, javax.swing.GroupLayout.PREFERRED_SIZE, 161, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(mobilefield, javax.swing.GroupLayout.PREFERRED_SIZE, 305, javax.swing.GroupLayout.PREFERRED_SIZE)))))
.addGap(57, 57, 57))
);

jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel6)
.addComponent(placefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel7)
.addComponent(towncityfield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel8)
.addComponent(codefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(phonefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel9)
.addComponent(mobilefield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel10)
.addComponent(emailfield, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);

savebutton.setFont(new java.awt.Font("Tahoma", 1, 14));
savebutton.setText("SAVE");
savebutton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
savebuttonActionPerformed(evt);
}
});

exitbutton.setFont(new java.awt.Font("Tahoma", 1, 14));
exitbutton.setText("EXIT");
exitbutton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
exitbuttonActionPerformed(evt);
}
});

resetbutton.setFont(new java.awt.Font("Tahoma", 1, 14));
resetbutton.setText("RESET");
resetbutton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
resetbuttonActionPerformed(evt);
}
});

javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 513, Short.MAX_VALUE)
.addComponent(jPanel2, javax.swing.GroupLayout.DEFAULT_SIZE, 513, Short.MAX_VALUE))
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGap(82, 82, 82)
.addComponent(savebutton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 70, Short.MAX_VALUE)
.addComponent(resetbutton)
.addGap(68, 68, 68)
.addComponent(exitbutton)
.addGap(96, 96, 96))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(exitbutton)
.addComponent(savebutton)
.addComponent(resetbutton))
.addContainerGap(34, Short.MAX_VALUE))
);

getAccessibleContext().setAccessibleName("PatientDetails");

pack();
}// </editor-fold>
private void titlefieldActionPerformed(java.awt.event.ActionEvent evt) {
if (evt.getActionCommand() == "Mr") {
sexfield.setText("Male");
} else {
sexfield.setText("Female");
}
}

private void savebuttonActionPerformed(java.awt.event.ActionEvent evt) {
try {
Class.forName("com.mysql.jdbc.Driver");
Connection con = (Connection) DriverManager.getConnection("jdbc:mysql://192.168.10.211/amar";, "amar", "amar123");
PreparedStatement stmt = (PreparedStatement) con.prepareStatement("insert into student_details(id,name,age,sex,place,towncity,phoneno,mobileno,emailid) values(?,?,?,?,?,?,?,?,?)");

int id = Integer.parseInt(idfield.getText());
if (id == 0) {
JOptionPane.showMessageDialog(idfield, "ID is required");
//break;
}
stmt.setInt(1, id);
String title = (String) titlefield.getSelectedItem();
String name = (String) namefield.getText();

if (name == null) {
JOptionPane.showMessageDialog(namefield, "NAME is required");
// break;
}
name = title + name;
stmt.setString(2, name);
int age = Integer.parseInt(agefield.getText());
if (age == 0) {
JOptionPane.showMessageDialog(agefield, "AGE is required");
// break;
}
stmt.setInt(3, age);
String sex = (String) sexfield.getText();
if (sex == "") {
JOptionPane.showMessageDialog(sexfield, "SEX is required");
// break;
}
stmt.setString(4, sex);
String place = (String) placefield.getText();
if (place == "") {
JOptionPane.showMessageDialog(placefield, "PLACE is required");
// break;
}
stmt.setString(5, place);
String towncity = (String) towncityfield.getText();
if (towncity == "") {
JOptionPane.showMessageDialog(towncityfield, "TOWN/CITY is required");
}
stmt.setString(6, towncity);
int code = Integer.parseInt(codefield.getText());
if (code == 0) {
JOptionPane.showMessageDialog(codefield, "CODE is required");
}

int phone = Integer.parseInt(phonefield.getText());
if (phone == 0) {
JOptionPane.showMessageDialog(phonefield, "PHONE NO is required");
}
/*
int phoneno = code + phone;
stmt.setInt(7, phoneno);
int mobileno = Integer.parseInt(mobilefield.getText());
if (mobileno == 0) {
JOptionPane.showMessageDialog(mobilefield, "MOBILE NO is required");
}

stmt.setInt(8, mobileno);
String emailid = (String) emailfield.getText();
if (emailid == "") {
JOptionPane.showMessageDialog(emailfield, "EMAIL ID is required");
}
*/
//stmt.setString(9, emailid);
stmt.executeUpdate();
JOptionPane.showMessageDialog(savebutton, "your data has been saved successfully!");
con.close();
} catch (Exception e) {
e.printStackTrace();
}
}

private void resetbuttonActionPerformed(java.awt.event.ActionEvent evt) {
if (evt.getActionCommand() == "RESET") {
idfield.setText("");
namefield.setText("");
agefield.setText("");
sexfield.setText("");
placefield.setText("");
towncityfield.setText("");
codefield.setText("");
phonefield.setText("");
mobilefield.setText("");
emailfield.setText("");
}
}
private void exitbuttonActionPerformed(java.awt.event.ActionEvent evt) {
if (evt.getActionCommand() == "EXIT") {
System.exit(0);
}
}

private void formKeyPressed(java.awt.event.KeyEvent evt) {

Set forwardKeys = getFocusTraversalKeys(
KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS);
Set newForwardKeys = new HashSet(forwardKeys);
newForwardKeys.add(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0));
setFocusTraversalKeys(KeyboardFocusManager.FORWARD_TRAVERSAL_KEYS, newForwardKeys);

}

/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {

public void run() {
new StudentRecord().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JTextField agefield;
private javax.swing.JTextField codefield;
private javax.swing.JTextField emailfield;
private javax.swing.JButton exitbutton;
private javax.swing.JTextField idfield;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel10;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JLabel jLabel6;
private javax.swing.JLabel jLabel7;
private javax.swing.JLabel jLabel8;
private javax.swing.JLabel jLabel9;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JTextField mobilefield;
private javax.swing.JTextField namefield;
private javax.swing.JTextField phonefield;
private javax.swing.JTextField placefield;
private javax.swing.JButton resetbutton;
private javax.swing.JButton savebutton;
private javax.swing.JTextField sexfield;
private javax.swing.JComboBox titlefield;
private javax.swing.JTextField towncityfield;
// End of variables declaration
}

----------------------------------------------

Read for more information.

http://www.roseindia.net/java/example/java/swing/

Thanks.

Amardeep