正文
JavaDailyReports10_15
提示：扫一扫查出行【扫一扫了解最新限行尾号】
复制提示
2020-10-15
16:12:16
今天学习了如何实现倒计时控制程序的运行：
1 package timer;
2
3 import java.util.Calendar;
4 import java.util.Date;
5 import java.util.Timer;
6 import java.util.TimerTask;
7
8 /**
9 * java演示倒计时
10 *
11 */
12 public class TimeTest {
13 public static int time = 60 * 60 * 60;
14 public static Calendar c;
15 public static long endTime;
16 public static Date date;
17 public static long startTime;
18 public static long midTime;
19
20 public static void main(String[] args) {
21 c = Calendar.getInstance();
22 c.set(2017, 4, 17, 0, 0, 0);// 注意月份的设置，0-11表示1-12月
23 // c.set(Calendar.YEAR, 2017);
24 // c.set(Calendar.MONTH, 4);
25 // c.set(Calendar.DAY_OF_MONTH, 17);
26 // c.set(Calendar.HOUR_OF_DAY, 0);
27 // c.set(Calendar.MINUTE, 0);
28 // c.set(Calendar.SECOND, 0);
29 endTime = c.getTimeInMillis();
30 date = new Date();
31 startTime = date.getTime();
32 midTime = (endTime - startTime) / 1000;
33
34 time1();//方式一
35 //time2();// 方式二
36 //time3();//方式三
37 }
38
39 /**
40 * 方式三： 使用java.util.Timer类进行倒计时
41 */
42 private static void time3() {
43 Timer timer = new Timer();
44 timer.schedule(new TimerTask() {
45 public void run() {
46 midTime--;
47 long hh = midTime / 60 / 60 % 60;
48 long mm = midTime / 60 % 60;
49 long ss = midTime % 60;
50 System.out.println("还剩" + hh + "小时" + mm + "分钟" + ss + "秒");
51 }
52 }, 0, 1000);
53 }
54
55 /**
56 * 方式二： 设定时间戳，倒计时
57 */
58 private static void time2() {
59
60 while (midTime > 0) {
61 midTime--;
62 long hh = midTime / 60 / 60 % 60;
63 long mm = midTime / 60 % 60;
64 long ss = midTime % 60;
65 System.out.println("还剩" + hh + "小时" + mm + "分钟" + ss + "秒");
66 try {
67 Thread.sleep(1000);
68
69 } catch (InterruptedException e) {
70 e.printStackTrace();
71 }
72 }
73 }
74
75 /**
76 * 方式一： 给定时长倒计时
77 */
78 private static void time1() {
79 while (time > 0) {
80 time--;
81 try {
82 Thread.sleep(1000);
83 int hh = time / 60 / 60 % 60;
84 int mm = time / 60 % 60;
85 int ss = time % 60;
86 System.out.println("还剩" + hh + "小时" + mm + "分钟" + ss + "秒");
87 } catch (InterruptedException e) {
88 e.printStackTrace();
89 }
90 }
91
92 }
93 }
