Java多線程簡單示例

多線程簡單控制示例。

1. extends Thread.

package cn.com.keke.thread.test;
/**
 * extends Thread
 * @author player
 *
 */
public class MyThread extends Thread {

    //線程執行條件
    private boolean t;

    public MyThread(boolean b) {
        this.t = b;
    }

    public void run() {
        if (this.t) {
            System.out.print(" T ");
        } else {
            System.out.print(" F ");
        }
    }

    public static void main(String[] args) {
        Thread t1 = new MyThread(true);
        Thread t2 = new MyThread(false);
        t1.start();
        t2.start();

        // Thread 成員變量threadStatus 作怪
//      int i = 0;
//      do {
//          t1.start(); //throw runtime exception
//          t2.start(); //throw runtime exception

//          new Thread(t1).start(); //line is ok
//          new Thread(t2).start(); // line is ok
//          i++;
//      } while (i < 5);
    }
}

2 implements Runnable.

package cn.com.keke.thread.test;
/**
 * implements Runnable
 * @author player
 *
 */
public class MyThread2 implements Runnable {

    private boolean t;

    public MyThread2(boolean b) {
        this.t = b;
    }

    public void run() {
        if (t) {
            System.out.print(" T ");
        } else {
            System.out.print(" F ");
        }
    }

    public static void main(String[] args) {
        MyThread2 t1 = new MyThread2(true);
        MyThread2 t2 = new MyThread2(false);

        Thread tt1 = new Thread(t1);
        Thread tt2 = new Thread(t2);

        tt1.start();
        tt2.start();

//      // Thread threadStatus 作怪
//      int i = 0;
//      do {
//          tt1.start();//throw runtime exception
//          tt2.start();//throw runtime exception
//
//          new Thread(t1).start();//line is ok
//          new Thread(t2).start();//line is ok
//          i++;
//      } while (i < 5);
//  }

}