1 package kk;
2 import java.util.*;
3 import java.awt.EventQueue;
4 import java.text.DecimalFormat;
5 import java.text.SimpleDateFormat;
6 import java.util.Scanner;
7 import java.util.Timer;
8 import java.util.TimerTask;
9
10 import javax.swing.JOptionPane;
11
12
13
14
15 public class kk {
16 float sum;
17 String parten = "0.00";//为下一行代码初始化准备
18 DecimalFormat decimal = new DecimalFormat(parten);//创建一个类型为DecimalFormat类的对象decimal
19 String str;
20 static Timer timer = null;
21 static SimpleDateFormat df=new SimpleDateFormat("mm:ss"); //控制时间的格式类
22 long starttime;
23 long finishtime;
24 long duration;
25 long allduration;
26 public kk()
27 {
28 timer = new Timer();
29 finishtime=System.currentTimeMillis();
30 starttime=finishtime;
31 timer.schedule(new TimerTask()
32 {
33 public void run() {
34 finishtime=System.currentTimeMillis();
35 duration=finishtime-starttime;
36 /* if(duration/1000==25&&summary<tishu)
37 {
38 JOptionPane.showMessageDialog(null, "答题时间已到。答题总题数为"+(dadui+dacuo)+",答对题数为"+dadui+",答错题数为"+dacuo+",未答题题数为"+(tishu-dadui-dacuo)+",答题使用时间:"+(allduration+duration)/1000+"秒。");
39 frame.setVisible(false);
40 new 每天一练初级版题型选择();
41 }
42 String str=df.format(new Date(duration));
43 T7.setText(str);*/
44 String str=df.format(new Date(duration));
45 System.out.print(str);
46 }
47 }, 1000, 1000);
48 }
49 public static void main(String[] args) {
50 EventQueue.invokeLater(new Runnable() {
51 public void run() {
52 try {
53 kk window = new kk();
54 Scanner qq=new Scanner(System.in);
55 } catch (Exception e) {
56 e.printStackTrace();
57 }
58 }
59 });
60 }
61 }
