本文实例主要进行java Timer(定时调用、固定时间执行)测试,具体实现代码如下。
测试1
当任务执行时间小于重复执行的间隔时间
代码:
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public class TimerTest2 { public static void main(String[] args) throws InterruptedException { Timer timer = new Timer(); timer.schedule( new MyTask( 0 ), 1000 , 10000 ); //timer.schedule(new MyTask(1), 1000, 10000); } static class MyTask extends TimerTask { private final int i; public MyTask( int i) { this .i = i; } @Override public void run() { System.out.println(i + "dddd" + DateTimeUtil.getDateTimeString( "yyyy-MM-dd HH:mm:ss.SSS" )); try { if (i == 0 ) { Thread.sleep(8000L); } else { Thread.sleep(13000L); } } catch (Exception e) { e.printStackTrace(); } } } } |
结果:
0dddd2018-01-11 15:34:57.826
0dddd2018-01-11 15:35:07.824
0dddd2018-01-11 15:35:17.824
0dddd2018-01-11 15:35:27.824
0dddd2018-01-11 15:35:37.824
0dddd2018-01-11 15:35:47.824
0dddd2018-01-11 15:35:57.824
0dddd2018-01-11 15:36:07.824
0dddd2018-01-11 15:36:17.824
0dddd2018-01-11 15:36:27.824
0dddd2018-01-11 15:36:37.824
0dddd2018-01-11 15:36:47.824
0dddd2018-01-11 15:36:57.824
0dddd2018-01-11 15:37:07.824
0dddd2018-01-11 15:37:17.824
0dddd2018-01-11 15:37:27.824
0dddd2018-01-11 15:37:37.824
测试2
当任务执行时间大于重复执行的间隔时间
代码:
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public class TimerTest2 { public static void main(String[] args) throws InterruptedException { Timer timer = new Timer(); //timer.schedule(new MyTask(0), 1000, 10000); timer.schedule( new MyTask( 1 ), 1000 , 10000 ); } static class MyTask extends TimerTask { private final int i; public MyTask( int i) { this .i = i; } @Override public void run() { System.out.println(i + "dddd" + DateTimeUtil.getDateTimeString( "yyyy-MM-dd HH:mm:ss.SSS" )); try { if (i == 0 ) { Thread.sleep(8000L); } else { Thread.sleep(13000L); } } catch (Exception e) { e.printStackTrace(); } } } } |
结果:
1dddd2018-01-11 16:03:07.575
1dddd2018-01-11 16:03:20.601
1dddd2018-01-11 16:03:33.602
1dddd2018-01-11 16:03:46.603
1dddd2018-01-11 16:03:59.604
1dddd2018-01-11 16:04:12.606
1dddd2018-01-11 16:04:25.607
1dddd2018-01-11 16:04:38.608
总结
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原文链接:http://blog.csdn.net/hl_java/article/details/79035344