ch9_45.java

60多个javaSwing范例

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class ch9_45 extends JFrame implements ActionListener
{
	TextField tf;
	public ch9_45()
	{
		super("测试对话框");
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		setBounds(20,20,500,300);
	}
	public static void main(String [] args)
	{
		ch9_45 f=new ch9_45();
		f.getContentPane().setLayout(null);
		
		JButton jb=new JButton("确定");
		jb.setBounds(20,20,80,40);
		jb.addActionListener(f);
		
		f.tf=new TextField();
		f.tf.setBounds(120,20,100,40);
		
		f.getContentPane().add(jb);
		
		f.getContentPane().add(f.tf);
		
		f.setVisible(true);
	}
	public void actionPerformed(ActionEvent e)
	{
		FileDialog jd=new FileDialog(this,"请选择",FileDialog.LOAD);
		
		jd.setVisible(true);
		tf.setText(jd.getDirectory()+"   "+jd.getFile());
	}
}