import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import javax.swing.event.*;
class myFrame extends JFrame implements ActionListener{
JButton button;
JTextField textField1;
JTextField textField2;
JTextField textField3;
JLabel label1,label2,label3,label4;
myFrame(){
super("GUI exercise");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
button=new JButton("total");
textField1=new JTextField(10);
textField2=new JTextField(10);
textField3=new JTextField(10);
label1=new JLabel("name: ");
label2=new JLabel("English: ");
label3=new JLabel("computer:");
label4=new JLabel();
Container contentPane=getContentPane();
contentPane.setLayout(new FlowLayout());
contentPane.add(label1);
contentPane.add(textField1);
contentPane.add(label2);
contentPane.add(textField2);
contentPane.add(label3);
contentPane.add(textField3);
contentPane.add(button);
contentPane.add(label4);
button.addActionListener(this);
textField1.addActionListener(this);
textField2.addActionListener(this);
textField3.addActionListener(this);
setVisible(true);
}
.......
