多线程中不需要的输出

Question

class mythread implements Runnable {

    Thread t1;
    String name = "";

    public mythread(String thname) {
         name = thname;
         t1= new Thread(this, name);
         System.out.println(t1);
         t1.start();
         System.out.println(t1.getName());
     }
     @Override
     public void run() {
         for (int i=5;i>0;i--){
             try {
                System.out.println(Thread.currentThread());
                 System.out.println("child Thread" + i);
                 Thread.sleep(2000);
             }  catch(InterruptedException e){
                System.out.println("Child Thread Interrupted");
             }
         }
     }
}

public class Mainthread {
   public static void main(String[] args) {
        mythread m1 = new mythread("Rohan");
        mythread m2 = new  mythread("Jain");

        try {
            for(int i=5;i>0;i--){
                System.out.println("Main Thread" + i);
                 Thread.sleep(2000);
            }
        } catch(InterruptedException e){
            System.out.println("Main Thread Interrupted");
        }
    }
}

输出为：

Thread[Rohan,5,main]
Rohan
Thread[Jain,5,main]
Thread[Rohan,5,main]
child Thread5
Jain
Main Thread5
Thread[Jain,5,main]
child Thread5
Main Thread4
Thread[Rohan,5,main]
child Thread4
Thread[Jain,5,main]
child Thread4
Main Thread3
Thread[Rohan,5,main]
child Thread3
Thread[Jain,5,main]
child Thread3
Main Thread2
Thread[Jain,5,main]
Thread[Rohan,5,main]
child Thread2
child Thread2
Thread[Rohan,5,main]
child Thread1
Thread[Jain,5,main]
child Thread1
Main Thread1

但是我想要的输出就像首先应该在线程“ rohan”中打印5，然后在“ jain”中打印5，然后在线程“ main”中打印5，依此类推…请帮助..
!!!!!!

Answer 1

这些问题确实使我感到困惑。线程的全部要点是它们并行 异步
运行，因此我们可以获得更好的性能。由于硬件，竞争条件，时间分段随机性和其他因素，无法预测线程的运行顺序。任何询问线程程序中特定输出顺序的人都不应使用线程。