java Swing 进度条

 1 package io.guanghe;
 2 
 3 import javax.swing.*;
 4 
 5 /*
 6     ProgressMonitor的用法与ProgressBar相似 , ProgressMonitor可以直接创建一个进度对话框
 7     提供的构造方法:
 8     public ProgressMonitor(Component parentComponent,Object message,String note,
 9     int min,int max):
10     parentComponent: 对话框的父组件
11     message: 对话框的描述信息
12     note: 进度的提示信息
13     min: 进度条的最小值
14     max: 进度条的最大值
15 */
16 public class Progress {
17 
18     //定时器
19     Timer timer;
20     //任务线程
21     private static class SimulatorActivity implements Runnable {
22         //内存可见
23         private volatile int current = 0;
24         private int amount;
25         public SimulatorActivity(int amount) {
26             this.amount = amount;
27         }
28         public int getCurrent() {
29             return current;
30         }
31         public void setCurrent(int current) {
32             this.current = current;
33         }
34         public int getAmount() {
35             return amount;
36         }
37         public void setAmount(int amount) {
38             this.amount = amount;
39         }
40         @Override
41         public void run() {
42             //通过循环,不断的修改current的值,模拟任务我完成量
43             while (current < amount) {
44                 try {
45                     Thread.sleep(50);
46                 } catch (InterruptedException e) {
47                     e.printStackTrace();
48                 }
49                 current++;
50             }
51         }
52     }
53 
54     private Timer initTimer(ProgressMonitor monitor, SimulatorActivity simulatorActivity) {
55         //设置定时任务
56         return new Timer(100, e -> {
57             //读取当前任务量,修改进度
58             int current = simulatorActivity.getCurrent();
59             monitor.setProgress(current);
60             //判断用户是否点击了取消按钮,停止定时任务,关闭对话框,退出程序
61             if (monitor.isCanceled()) {
62                 timer.stop();
63                 monitor.close();
64                 System.exit(0);
65             }
66             if (current == 100) {
67                 System.exit(0);
68             }
69         });
70     }
71 
72     public void init() {
73         //创建view
74         ProgressMonitor monitor = new ProgressMonitor(null, "等待任务完成", "已完成", 0, 100);
75         //创建任务model
76         SimulatorActivity simulaterActivity = new SimulatorActivity(100);
77         //执行任务model
78         new Thread(simulaterActivity).start();
79         //开启监听controller
80         initTimer(monitor, simulaterActivity).start();
81     }
82 
83     public static void main(String[] args) {
84         new Progress().init();
85     }
86 }