java继承Thread实现多线程

在这里插入图片描述

1、AdminController文件

package com.controller;

import com.myThread.AdminThread;
import org.springframework.web.bind.annotation.*;

@RestController
@CrossOrigin
@RequestMapping("/admin")
public class AdminController{
    @GetMapping("/{id}")
    public long findById(@PathVariable Long id){
        System.out.print("进来啦\n");
        //创建一个线程对象
        AdminThread t1 = new AdminThread();
        //创建一个线程对象
        AdminThread t2 = new AdminThread();
        //开启第一个线程
        t1.start();
        //开启第二个线程
        t2.start();
        return id;
    }
}

2、AdminThread文件

package com.myThread;

public class AdminThread extends Thread{
    @Override
    public void run() {
        //线程开始之后执行的代码
        for (int i = 0; i < 100; i++) {
            System.out.print("线程"+i+"\n");
        }
    }
}

二、给线程起名

package com.controller;

import com.myThread.AdminThread;
import com.myThread.MyCallable;
import com.myThread.MyRunnable;
import org.springframework.web.bind.annotation.*;

import java.util.concurrent.ExecutionException;
import java.util.concurrent.FutureTask;

@RestController
@CrossOrigin
@RequestMapping("/admin")
public class AdminController{
    @GetMapping("/{id}")
    public long findById(@PathVariable Long id){
        System.out.print("进来啦\n");

        //创建一个线程对象
        AdminThread t1 = new AdminThread("线程名称1");
        //创建一个线程对象
        AdminThread t2 = new AdminThread("线程名称2");

        //这一种方便
        //t1.setName("高铁");
        //t2.setName("飞机");

        //开启第一个线程
        t1.start();
        //开启第二个线程
        t2.start();
        return id;
    }
}

package com.myThread;

public class AdminThread extends Thread{

    public AdminThread() {}
    public AdminThread(String name) {
        super(name);
    }

    @Override
    public void run() {
        //线程开始之后执行的代码
        for (int i = 0; i < 100; i++) {
            System.out.print(getName()+"线程"+i+"\n");
        }
    }
}

线程睡眠

package com.myThread;

public class AdminThread extends Thread{

    @Override
    public void run() {
        //线程开始之后执行的代码
        for (int i = 0; i < 100; i++) {
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            System.out.print(getName()+"线程"+i+"\n");
        }
    }
}

设置线程权重

@GetMapping("/{id}")
    public long findById(@PathVariable Long id) throws InterruptedException {
        System.out.print("进来啦\n");

        //创建一个线程对象
        AdminThread t1 = new AdminThread();
        //创建一个线程对象
        AdminThread t2 = new AdminThread();

        //这一种方便(起名)
        t1.setName("线程名称1");
        t2.setName("线程名称2");

        //优先级: 1 - 10 默认值:5
        t1.setPriority(7);//权重
        t2.setPriority(3);//权重

        //查询权重
//        System.out.print(t1.getPriority());

        //开启第一个线程
        t1.start();
        //开启第二个线程
        t2.start();
        return id;
    }