Java Timer test timed call and fixed-time code execution example

The examples in this article mainly conduct java Timer (timed call, fixed time execution) tests, and the specific implementation code is as follows.

Test 1

When the task execution time is less than the interval time of repeated execution

Code:

 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(); } } }}

result:

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

Test 2

When the task execution time is greater than the interval time of repeated execution

Code:

 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(); } } }}

result:

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

Summarize

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