两个java图形用户界面的小程序

import javax.swing.*;

import java.awt.*;

import java.awt.event.*;

public class LX9_9 extends JFrame implements ActionListener{

JButton button1,button2,button3;

JToolBar toolBar;

JTextArea textArea;

JScrollPane scrollPane;

JPanel panel;

public LX9_9(){

super("带有工具栏按钮的窗口");

addWindowListener(new WindowAdapter(){

public void windowClosing(WindowEvent e){ System.exit(0); }

});

button1=new JButton(new ImageIcon("image/PreviousArrow.gif")); button2=new JButton(new ImageIcon("image/go.GIF"));

button3=new JButton(new ImageIcon("image/NextArrow.gif")); button1.addActionListener(this);

button2.addActionListener(this);

button3.addActionListener(this);

toolBar=new JToolBar();

toolBar.add(button1);

toolBar.add(button2);

toolBar.add(button3);

textArea=new JTextArea(6,30);

scrollPane=new JScrollPane(textArea);

panel=new JPanel();

setContentPane(panel);

panel.setLayout(new BorderLayout());

panel.setPreferredSize(new Dimension(300,150));

panel.add(toolBar,BorderLayout.NORTH);

panel.add(scrollPane,BorderLayout.CENTER);

pack();

}

public void actionPerformed(ActionEvent e){

String s=""; if(e.getSource()==button1)

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