java swing中获取客户端屏幕大小

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.JButton;

import javax.swing.JFrame;

import javax.swing.JTextField;

import javax.swing.WindowConstants;

//得到屏幕大小的例子

public class ScreenSizeDemo

{

JFrame jf = new JFrame("ScreenSizeDemo");

JTextField jtf = new JTextField(20);

JButton jb = new JButton("测试");

//得到屏幕的大小

Dimension screensize = Toolkit.getDefaultToolkit().getScreenSize();

int width = (int)screensize.getWidth();//得到宽

int height = (int)screensize.getHeight();//得到高

public ScreenSizeDemo()

{

jf.setLayout(new FlowLayout(FlowLayout.LEFT));

jf.add(jtf);

jtf.setEditable(false);

jf.add(jb);

jb.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

jtf.setText("您的屏幕大小是：" + width + "*" + height);

}

});

jf.setSize(320,80);

jf.setLocation(width/3,height/3);

jf.setVisible(true);

jf.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

}

public static void main(String[] args)

{

new ScreenSizeDemo();

}

}