如何实现多线程

1.继承Thread类实现多继承（此法优缺点，若已经继承类，则无法再继承Thread类）;

public  class  TestThread  extends  Thread { //自定义类继承Thread类
    //run()方法里是线程体
    public  void  run() {
        for  ( int  i =  0 ; i <  10 ; i++) {
            System.out.println( this .getName() +  ":"  + i); //getName()方法是返回线程名称
        }
    }

    public  static  void  main(String[] args) {
        TestThread thread1 =  new  TestThread(); //创建线程对象
        thread1.start(); //启动线程
        TestThread thread2 =  new  TestThread();
        thread2.start();
    }
}

2.通过Runnable接口实现多继承

public  class  TestThread2  implements  Runnable { //自定义类实现Runnable接口；
    //run()方法里是线程体；
    public  void  run() {
        for  ( int  i =  0 ; i <  10 ; i++) {
            System.out.println(Thread.currentThread().getName() +  ":"  + i);
        }
    }
    public  static  void  main(String[] args) {
        //创建线程对象，把实现了Runnable接口的对象作为参数传入；
        Thread thread1 =  new  Thread( new  TestThread2());
        thread1.start(); //启动线程；
        Thread thread2 =  new  Thread( new  TestThread2());
        thread2.start();
    }
}

步骤：先创建线程对象，然后启动线程对象

转载于:https://www.cnblogs.com/timeboy/p/9464439.html