可现实开机最小化托盘，可还原；并可设置定时关机。
1、MainFrame
package pretoct;
import java.awt.AWTException;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.MenuItem;
import java.awt.Panel;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.TextArea;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.text.SimpleDateFormat;
import java.util.Date;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.SwingConstants;
import javax.swing.Timer;
import pretoct.SD;
public class MainFrame extends JFrame {
static TextArea ta = new TextArea();
private static TrayIcon trayIcon = null;
static JFrame mf = new JFrame();
static SystemTray tray = SystemTray.getSystemTray();
public static void myFrame() { // 窗体
mf.setLocation(300, 100);
mf.setSize(400, 150);
mf.setTitle("定时休息系统");
mf.setLayout(new BorderLayout());
ta.setText("30");
ImageIcon ll = new ImageIcon("image/favicon.ico");//在JFrame中使用图片
JLabel i = new JLabel(ll);
JLabel j = new JLabel("鼠标单击设置定时关机", SwingConstants.CENTER);//设置标签，显示文本居中
j.addMouseListener(new MouseAdapter(){
public void mouseClicked(MouseEvent e){
j.setForeground(Color.red);
System.out.println("-------------");
SD win= new SD("定时关机程序");
Thread t=new Thread(win);
t.start();
}//mouseClicked
});//addMouseListener
JLabel k = new JLabel("实现定时休息提醒功能，在下框中输入休息间隔时间（分）。", SwingConstants.CENTER);//设置标签，显示文本居中
j.setFont(new java.awt.Font("", 1, 18));//设置标签J显示字体
Panel p1 = new Panel();//实例化面板P1
p1.setLayout(new BorderLayout());//设置面板P1中控件排列方式
final Panel p11 = new Panel();
p11.setLayout(new BorderLayout());//设置P11控件排列方式
p11.add(j, BorderLayout.NORTH);//P11上方显示控件J
p11.add(k, BorderLayout.SOUTH);//P11下方显示控件K
final JLabel t = new JLabel("",SwingConstants.CENTER);//设置标签t用于显示时钟
t.setFont(new java.awt.Font("", 1, 26));//设置标签t字体
t.setForeground(Color.blue);//设置标签t前景色彩
p11.add(t,BorderLayout.CENTER);//标签t显示在中间位置
Timer timer_date = new Timer(1000,new ActionListener(){ //设置数字时钟
public void actionPerformed(ActionEvent evt) {
t.setText( new SimpleDateFormat("yyyy年MM月dd日 HH:mm:ss").format(new Date()));
}//actionPerformed
}); //Timer
timer_date.start();
p1.add(i, BorderLayout.WEST);//左侧图标
p1.add(p11, BorderLayout.CENTER);//p11在P1中间排列
mf.add(p1, BorderLayout.NORTH);//将p1显示在窗口上方
mf.add(ta, BorderLayout.CENTER);//将一个多行文本区域显示在文体中间
mf.setVisible(true);//使窗口可见
mf.addWindowListener(new WindowAdapter() { // 窗口关闭事件
public void windowClosing(WindowEvent e) {
System.exit(0);
};//windowClosing
public void windowIconified(WindowEvent e) { // 窗口最小化事件
mf.setVisible(false);
MainFrame.miniTray();
}//windowIconified
});//addWindowListener
MainFrame.setTimer();
//add 使最小化
MainFrame.miniTray();
mf.setVisible(false);
//end add
}//myFrame
private static void miniTray() { //窗口最小化到任务栏托盘
ImageIcon trayImg = new ImageIcon("image/favicon.ico");//托盘图标
PopupMenu pop = new PopupMenu(); //增加托盘右击菜单
MenuItem show = new MenuItem("还原");
MenuItem exit = new MenuItem("退出");
show.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) { // 按下还原键
tray.remove(trayIcon);
mf.setVisible(true);
mf.setExtendedState(JFrame.NORMAL);
mf.toFront();
}//actionPerformed
});//addActionListener
exit.addActionListener(new ActionListener() { // 按下退出键
public void actionPerformed(ActionEvent e) {
tray.remove(trayIcon);
System.exit(0);
}//actionPerformed
});//addActionListener
pop.add(show);
pop.add(exit);
trayIcon = new TrayIcon(trayImg.getImage(), "请注意休息哦！身体最重要。", pop);
trayIcon.setImageAutoSize(true);
trayIcon.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) { // 鼠标器双击事件
if (e.getClickCount() == 2){
tray.remove(trayIcon); // 移去托盘图标
mf.setVisible(true);
mf.setExtendedState(JFrame.NORMAL); // 还原窗口
mf.toFront();
}//if
}//mouseClicked
});//addMouseListener
try {
tray.add(trayIcon);
} catch (AWTException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}//try
}//miniTray
//设置Timer
private static void setTimer(){
int time=1000; //1000ms实现一次动作 实际是一个线程
long openTime=System.currentTimeMillis()/1000;//起初值
Timer timeAction = new Timer(time, new ActionListener() {
public void actionPerformed(ActionEvent e) {
int userRestMinute=Integer.parseInt(ta.getText())*60;
long nowTime=System.currentTimeMillis()/1000;
long cha=nowTime-openTime;
long bi=cha%userRestMinute;
if(bi==0){
new TopFrame(); //打开新界面
System.out.println("hava a reset");
}//if
}//actionPer
});
timeAction.start();
}//setTimer
public static void main(String[] args) {
new MainFrame();
MainFrame.myFrame();
}//main
}//MainFrame
2、TopFrame.java
package pretoct;
import java.awt.FlowLayout;
import java.awt.Frame;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JRootPane;
import javax.swing.JTextField;
import javax.swing.Timer;
public class TopFrame extends Frame{
JTextField jtf=null;
int rest=100;//minutes
public TopFrame(){
JFrame frame =new JFrame();
FlowLayout flow=new FlowLayout( );
frame.setLayout(flow);
JLabel jlb=new JLabel("现在是休息时间，请好好休息！");
jtf=new JTextField(5);
frame.add(jlb);
frame.add(jtf);
jtf.setText(rest+"");
jtf.disable();
frame.setExtendedState(JFrame.MAXIMIZED_BOTH);
frame.setAlwaysOnTop(true);
frame.setUndecorated(true); // 去掉窗口的装饰
frame.getRootPane().setWindowDecorationStyle(JRootPane.NONE);//采用指定的窗口装饰风格
frame.setVisible(true);
Timer timeAction = new Timer(1000, new ActionListener() {
public void actionPerformed(ActionEvent e) {
rest--;
jtf.setText(rest+"");
if(jtf.getText().equals("0")){
System.out.println("-finished-");
frame.dispose();
}//if
}//actionPerformed
});//timeAction
timeAction.start();
}//TopFrame
}//TopFrame
3、FrameSD
package pretoct;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.text.SimpleDateFormat;
import java.io.*;
class SD extends Frame implements ActionListener,Runnable{
Label text1;
TextField text2;
Label text3;
Label text4;
Button button1 ;
Button button2 ;
Dialog dlg;
Date nowtime;
String st;
boolean tf=false;
SD(String s)
{super(s);
setLayout(new GridLayout(4,2));
text1=new Label("请输入关机时间(如 06:20)： ",text1.CENTER);
text2=new TextField(10);
text3=new Label("现在的时间是：",text3.CENTER);
nowtime=new Date();
SimpleDateFormat matter1=new SimpleDateFormat("HH 时 mm 分 ss秒 yyyy年 MM 月DD 日 E");
text4=new Label(matter1.format(nowtime));
button1=new Button("确定");
button2=new Button("取消");
add(text1);
add(text2);
add(text3);
add(text4);
add(button1);
add(button2);
setBounds(100,100,500,150);
button1.addActionListener(this);
button2.addActionListener(this);
addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){System.exit(0);}
});
setVisible(true);
validate();
}
public void run(){
while(true){
nowtime=new Date();
SimpleDateFormat matter2=new SimpleDateFormat("HH 时 mm 分 ss秒 yyyy年 MM 月DD 日 E");
text4.setText((matter2.format(nowtime)));
try{
Thread.sleep(1000);}
catch(Exception ex){}
}}
public void actionPerformed(ActionEvent e) {
String command=e.getActionCommand();
if(command.equals("确定")){
st=text2.getText();
int tj=st.length();
if(st.equals("")||tj<5){
final Dialog d=new Dialog(this,"错误",true);
d.add(new Label("你输入的格式错误！请从新输入！例如08:30",Label.CENTER));
d.addWindowListener(new WindowAdapter(){
public void windowClosing(WindowEvent e){d.dispose();}
});
d.setSize(300,100);
d.setVisible(true);
}else{
dlg=new Dialog(this,"关机确定",true);
Panel p=new Panel();
p.setLayout(new GridLayout(1,2));
Button button3=new Button("是");
Button button4=new Button("否");
p.add(button3);
p.add(button4);
button3.addActionListener(new ActionListener()
{public void actionPerformed(ActionEvent s){
try{
Runtime rt=Runtime.getRuntime();
String cmd= " C:/Windows/System32/at "+st+" shutdown.exe -s -t 20";
rt.exec(cmd);}catch(IOException e){}
dlg.dispose();}
});
button4.addActionListener(new ActionListener()
{public void actionPerformed(ActionEvent s){
dlg.dispose();}
});
dlg.addWindowListener(new WindowAdapter()
{
public void windowClosing(WindowEvent e){dlg.dispose();}
});
dlg.add(new Label("你确定在"+st+"时关机？在cmd中使用at id /delete可放弃任务。"),"Center");
dlg.add(p,"South");
dlg.setBounds(150,200,200,100);
dlg.setVisible(true);
}}
else if(command.equals("取消")){
this.dispose();
}
}
}
/*
public class FrameSD{
public static void main(String arge[]){
SD win= new SD("定时关机程序");
Thread t=new Thread(win);
t.start();
}//main
}//FrameSD*/