Here is a simple example of java swing. The given code creates a frame which is composed of some swing components.

import javax.swing.*;
import java.awt.*;
import java.io.*;
import java.awt.event.*;
import java.sql.*;
class Form extends JFrame
{
JButton ADD;
JPanel panel;
JLabel label1,label2,label3,label4,label5;
final JTextField text1,text2,text3,text4,text5;
Form(){
label1 = new JLabel();
label1.setText("UserID:");
text1 = new JTextField(20);

label2 = new JLabel();
label2.setText("First Name:");
text2 = new JTextField(20);

label3 = new JLabel();
label3.setText("Last Name:");
text3 = new JTextField(20);

label4 = new JLabel();
label4.setText("ADDRESS:");
text4 = new JTextField(20);

label5 = new JLabel();
label5.setText("Email:");
text5 = new JTextField(20);

ADD=new JButton("ADD");

panel=new JPanel(new GridLayout(6,2));
panel.add(label1);
panel.add(text1);
panel.add(label2);
panel.add(text2);
panel.add(label3);
panel.add(text3);
panel.add(label4);
panel.add(text4);
panel.add(label5);
panel.add(text5);
panel.add(ADD);
add(panel,BorderLayout.CENTER);
setTitle("FORM");
ADD.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent ae){

            JOptionPane.showMessageDialog(null,"Hello: "+text2.getText());

}
});
}
}
class SwingForm
{
public static void main(String arg[])
{
try
{
Form frame=new Form();
frame.setSize(300,300);
frame.setVisible(true);
}
catch(Exception e){
}
}
}