java实现界面---关机-优快云博客

本文展示了一个使用Java Swing创建的简易图形用户界面，通过自定义面板和标签实现图像背景和鼠标事件监听。该程序利用Runtime类执行系统命令，演示了如何通过点击界面上的标签来触发计算机的关机和取消关机操作。

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package com.lideng.work327;

import java.awt.Color;
import java.awt.Cursor;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.io.IOException;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.event.AncestorEvent;
import javax.swing.event.AncestorListener;
@SuppressWarnings("all")
public class JavaUtils  extends JFrame implements MouseListener{

	/**
	 * @param args
	 */
	private Image img=Toolkit.getDefaultToolkit().createImage(JavaUtils.class.getResource("/1.jpg"));
	private MyPanel mp=null;
	private JLabel close=null;
	private JLabel cancel=null;
	private Runtime run=Runtime.getRuntime();
	public static void main(String[] args) {
		new JavaUtils();
	}
	
	public JavaUtils(){
		close=new JLabel("你点下我");
		cancel=new JLabel("你再点下我");
		close.setSize(150, 50);
		close.setFont(new Font("宋体",Font.BOLD,22));
		close.setForeground(Color.RED);
		close.setLocation(70, 100);
		
		cancel.setSize(150, 50);
		cancel.setFont(new Font("宋体",Font.BOLD,22));
		cancel.setForeground(Color.RED);
		cancel.setLocation(70, 180);
		
		close.addMouseListener(this);
		cancel.addMouseListener(this);
			
			
	
		mp=new MyPanel();
		mp.add(close);
		mp.add(cancel);
		mp.setLayout(null);
		this.add(mp);
		this.setTitle("JavaUtils");
		this.setLocation((int)Toolkit.getDefaultToolkit().getScreenSize().getWidth()/2-150, (int)Toolkit.getDefaultToolkit().getScreenSize().getHeight()/2-150);
		this.setSize(300,300);
		this.setResizable(false);
		this.setUndecorated(true);
		this.setOpacity(0.8f);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		this.setVisible(true);
		
	}
	class MyPanel extends JPanel{
		@Override
		protected void paintComponent(Graphics g) {
			// TODO Auto-generated method stub
			super.paintComponent(g);
			g.drawImage(img, 0,0,this);
			
		}
	}
	@Override
	public void mouseClicked(MouseEvent e) {
			if(e.getSource()==close){
				try {
					run.exec("cmd /k shutdown -s -t 1");
				} catch (IOException e1) {
					// TODO Auto-generated catch block
					e1.printStackTrace();
				}
			}else if(e.getSource()==cancel){
				try {
					run.exec("cmd /k shutdown -a");
					
				} catch (IOException e1) {
					
					e1.printStackTrace();
				}finally{
					System.exit(0);
				}
			}
		
	}

	@Override
	public void mousePressed(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void mouseReleased(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}

	@Override
	public void mouseEntered(MouseEvent e) {
		// TODO Auto-generated method stub
		this.setCursor(Cursor.HAND_CURSOR);
	}

	@Override
	public void mouseExited(MouseEvent e) {
		// TODO Auto-generated method stub
		
	}

}

转载于:https://www.cnblogs.com/qurui1997/p/10609829.html