Examples of java.util.Timer.schedule()

java.util.Timer.schedule()
Schedules the specified task for execution after the specified delay. @param task task to be scheduled. @param delay delay in milliseconds before task is to be executed. @throws IllegalArgumentException if delay is negative, ordelay + System.currentTimeMillis() is negative. @throws IllegalStateException if task was already scheduled orcancelled, or timer was cancelled.

          exception);


      // Ensure a task is run but not after cancel
      t = new Timer();
      testTask = new TimerTestTask();
      t.schedule(testTask, 100, 500);
      synchronized (sync) {
        try {
          sync.wait(1000);
        } catch (InterruptedException e) {
        }

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          1, testTask.wasRun());


      // Ensure you can call cancel more than once
      t = new Timer();
      testTask = new TimerTestTask();
      t.schedule(testTask, 100, 500);
      synchronized (sync) {
        try {
          sync.wait(500);
        } catch (InterruptedException e) {
        }

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            int[] delayTime = { 50, 80, 20, 70, 40, 10, 90, 30, 60 };


            int j = 0;
            for (int i = 0; i < 100; i++) {
                tasks[i] = new TimerTestTask();
                t.schedule(tasks[i], delayTime[j++], 200);
                if (j == 9) {
                    j = 0;
                }
            }

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      TimerTestTask testTask = new TimerTestTask();
      Date d = new Date(System.currentTimeMillis() + 100);
      t.cancel();
      boolean exception = false;
      try {
        t.schedule(testTask, d);
      } catch (IllegalStateException e) {
        exception = true;
      }
      assertTrue(
          "Scheduling a task after Timer.cancel() should throw exception",

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      testTask = new TimerTestTask();
      d = new Date(System.currentTimeMillis() + 100);
      testTask.cancel();
      exception = false;
      try {
        t.schedule(testTask, d);
      } catch (IllegalStateException e) {
        exception = true;
      }
      assertTrue(
          "Scheduling a task after cancelling it should throw exception",

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      t = new Timer();
      testTask = new TimerTestTask();
      d = new Date(-100);
      exception = false;
      try {
        t.schedule(testTask, d);
      } catch (IllegalArgumentException e) {
        exception = true;
      }
      assertTrue(
          "Scheduling a task with negative date should throw IllegalArgumentException",

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      // Ensure a Timer throws a NullPointerException if the task is null
      t = new Timer();
      exception = false;
      d = new Date(System.currentTimeMillis() + 100);
      try {
        t.schedule(null, d);
      } catch (NullPointerException e) {
        exception = true;
      }
      assertTrue(
          "Scheduling a null task should throw NullPointerException",

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      // Ensure a Timer throws a NullPointerException if the date is null
      t = new Timer();
      testTask = new TimerTestTask();
      exception = false;
      try {
        t.schedule(testTask, null);
      } catch (NullPointerException e) {
        exception = true;
      }
      assertTrue(
          "Scheduling a null date should throw NullPointerException",

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      // Ensure proper sequence of exceptions
      t = new Timer();
      d = new Date(-100);
      exception = false;
      try {
        t.schedule(null, d);
      } catch (NullPointerException e) {
      } catch (IllegalArgumentException e) {
        exception = true;
      }
      assertTrue(

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      // Ensure a task is run
      t = new Timer();
      testTask = new TimerTestTask();
      d = new Date(System.currentTimeMillis() + 200);
      t.schedule(testTask, d);
      try {
        Thread.sleep(400);
      } catch (InterruptedException e) {
      }
      assertEquals("TimerTask.run() method not called after 200ms",

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