Thread的几种方法的使用

1:setPriority()

设置线程的优先级,从1 到10.   5是默认的.  1是最低优先级. 10是最高优先级

public class MyThread01 implements Runnable {

    @Override
    public void run() {
        for(int i=0;i<10;i++) {
            System.out.println("***:"+i);
        }
    }
}

public class Test {
    public static void main(String[] arg0) {
        MyThread01 myThread01 = new MyThread01();
        MyThread02 myThread02 = new MyThread02();
        Thread thread_01 = new Thread(myThread01);
        Thread thread_02 = new Thread(myThread02);

        thread_01.setPriority(6);
        thread_02.setPriority(7);
        thread_02.start();
        thread_01.start();
    }
}

这种输出的时候往往不起作用:

        thread_01.setPriority(6);
        thread_01.start();
        thread_02.setPriority(7);
        thread_02.start();

这是的话才会起到作用.