Java三种多线程实现睡眠排序

1、继承Thread类，重写run( )方法

2、实现Runnable接口，重写run( )方法

3、实现Callable接口，重写call( )方法并使用FutureTask获取call( )方法的返回结果

①继承Thread类，实现睡眠排序

class SleepSort extends Thread {
    private int num;
    public SleepSort(int num) {
        this.num = num;
    }
    public void run(){
        try{
            sleep(num*10);
        }catch (Exception e){
            e.printStackTrace();
        }
        System.out.print(num+" ");
    }
    public static void main(String[] args) {
        int nums[]={56,41,75,84,91,14,7,64,32};
        for (int num : nums) {
            SleepSort thread = new SleepSort(num);
            thread.start();
        }
    }
}

②实现Runnable接口，实现睡眠排序

public class SleepSort implements Runnable {
    private int num;
    public SleepSort(int num) {
        this.num = num;
    }
    public void run() {
        try{
            Thread.currentThread().sleep(num*10);
        }catch (Exception e){
            e.printStackTrace();
        }
        System.out.print(num+" ");
    }
    public static void main(String[] args) {
        int nums[]={56,41,75,84,91,14,7,64,32};
        for (int num : nums) {
            SleepSort mr = new SleepSort(num);
            Thread t1 = new Thread(mr);
            t1.start();
        }

    }
}

③实现Callable接口，实现睡眠排序

import java.util.concurrent.Callable;
import java.util.concurrent.FutureTask;

public class SleepSort implements Callable {
    private int num;
    public SleepSort(int num) {
        this.num = num;
    }
    public Object call() throws Exception {
        try {
            Thread.sleep(num*10);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.print(num+" ");
        return "";
    }

    public static void main(String[] args) {
        int nums[]={56,41,75,84,91,14,7,64,32};
        for (int num : nums) {
            SleepSort myThreadCall = new SleepSort(num);
            FutureTask integerFutureTask = new FutureTask<>(myThreadCall);
            new Thread(integerFutureTask).start();
        }
    }
}