线程

线程实例Thread：

public class Test1 {
    public static void main(String[] args) {
        Test1  test=new Test1();
        MyThread1  t1=test.new MyThread1();
        t1.setPriority(10);   //优先级设这最高
        t1.start();  //启动多线程
        MyThread1  t2=test.new MyThread1();
        t2.setPriority(1);   //优先级设为最低
        t2.start();
    }
    class MyThread1 extends Thread {
        @Override
        public void run() {
            for(int i=1;i<=20;i++){
                System.out.println("线程"+this.getId()+":"+i);
            }
        }
    }
}

线程实例Runnable接口：

public class MyRunnable implements Runnable{
    public void run() {
       for(int i=1;i<=20;i++){ 
           System.out.println("线程"+Thread.currentThread().getId()+":"+i); 
       }
    }
}
public static void main(String[] args) {
        MyRunnable myRun = new MyRunnable();
        Thread t1 = new Thread(myRun);
        t1.start();
        Thread t2 = new Thread(myRun);
        t2.start();
        new Thread(new Runnable() {
            @Override
            public void run() {
                for (int i = 1; i <= 20; i++) {
                    System.out.println("线程" + Thread.currentThread().getId()
                            + ":" + i); 
                }
            }
        }).start();
    }