java如何重载run()方法

Question

我有一些这样的代码，如何让两个 run() 方法与 start() 方法在不同的线程中运行？

 public class Test extends Thread{
   @override
   public void run(){
        //do something

   }
   public void run(int i){
        //do something

   }

  public static void main(String[] args) {
     Test test=new Test();
     // test.start()
     // How Can I let the two run() methods run in different thread?

 }

}

Answer 1

你想要两个独立的线程，你只需要实现Runnable。扩展线程意味着您想更改 Thread 的行为，而您并没有这样做。

每个线程都会做其他事情，所以有两个 Runnable 实现，Task1 和 Task2:

class Task1 implements Runnable (){
    public run(){
        System.out.println("Runnable 1");
    }
}

class Task2 implements Runnable (){
    public run(){
        System.out.println("Runnable 2");
    }
}

// create two threads, one for each task
Thread t1 = new Thread(new Task1());
Thread t2 = new Thread(new Task2());

// start the threads (should print the two messages)
t1.start();
t2.start();

要为不同的 Runnable 实现使用不同的参数，请像这样使用构造函数:

class ParamTask implements Runnable (){
    String someArg;
    public ParamTask(String someArg){
        this.someArg = someArg;
    }    

    public run(){
        System.out.println("Runnable argument was: " + this.someArg);
    }
}

Thread argThread = new Thread(new ParamTask("this is a message"));

argThread.start();