java多线程（简单程序）

import java.util.concurrent.*;   public class Main implements Runnable {     public void run() {          try {              while (true) {                  TimeUnit.MILLISECONDS.sleep(150);                  System.out.println(Thread.currentThread() + " " + this);              }          } catch (InterruptedException e) {              System.out.println("sleep() interrupted");          }      }        public static void main(String[] args) throws Exception {          for (int i = 0; i < 10; i++) {              Thread daemon = new Thread(new Main());              daemon.setDaemon(true); // Must call before start()              daemon.start();          }          System.out.println("All daemons started");          TimeUnit.MILLISECONDS.sleep(175);      }  }