mytask.java

来自「java 完全探索的随书源码」· Java 代码 · 共 42 行

import java.util.Date;
import java.util.Timer;
import java.util.TimerTask;

public class MyTask extends TimerTask
{
  int maxNumberOfTimesToRun = 0;
  // A reference to a date object
  Date currentDateTime = null;
  static int counter = 1;
  Timer myTimer = null;

  // Default Constructor
  public MyTask( int maxCounter, Timer aTimer )
  {
    super();
    maxNumberOfTimesToRun = maxCounter;
    myTimer = aTimer;
  }

  // Override the abstract method method
  public void run()
  {
    if ( MyTask.counter <= maxNumberOfTimesToRun )
    {
      System.out.println( MyTask.counter );
      // Create a current date instance
      currentDateTime = new Date( System.currentTimeMillis() );
      // Display the current date object as a string
      System.out.println( "MyTask: " + currentDateTime.toString() );
      MyTask.counter++;
    }
    else
    {
      // Since we reached the counter max, cancel the task
      cancel();
      // Also cancel the timer since I'm the only one using it.
      // This might not be true in all cases
      myTimer.cancel();
    }
  }
}