定时线程执行工具 : ScheduledThreadPoolExecutor

import java.util.concurrent.ScheduledThreadPoolExecutor;
import java.util.concurrent.TimeUnit;
import java.util.Date;


public class TestScheduledThreadPoolExecutor {

	public static void main(String[] args) {
		ScheduledThreadPoolExecutor exec=new ScheduledThreadPoolExecutor(1);

		exec.scheduleAtFixedRate(new Runnable(){//每隔一段时间就触发异常
			@Override
			public void run() {
				try
				{
					throw new Exception();	
				}
				catch (Exception e)
				{
					System.out.println("异常");
				}

			}}, 1000, 5000, TimeUnit.MILLISECONDS);

		exec.scheduleAtFixedRate(new Runnable(){//每隔一段时间打印系统时间，证明两者是互不影响的
			@Override
			public void run() {
				System.out.println(new Date().getTime());
			}}, 1000, 2000, TimeUnit.MILLISECONDS);
	}

}