How to start a new thread in java

We can start a new thread by inheriting the Thread class.

The steps are as follows:

1. Define a class A that inherits from the Java.lang.Thread class;

2. Override the run method in the Thread class in class A;

3. Write the operations that need to be performed in the run method: the code in the run method, the thread execution body;

4. Create the thread object in the main method (thread) and start the thread .

(1) Create a thread class object

A类 a = new A类();

(2) Call the start method of the thread object

a.start();//启动一个线程

(Video tutorial recommendation: java video)

Note: Never call the run method. If you call the run method, it is like calling a method on an object. There will still be only one thread and no new thread will be started. A thread can only be started once.

The specific examples are as follows:

//1):定义一个类A继承于java.lang.Thread类.  
class MusicThread extends Thread{  
    //2):在A类中覆盖Thread类中的run方法.  
    public void run() {  
        //3):在run方法中编写需要执行的操作  
        for(int i = 0; i < 50; i ++){  
            System.out.println("播放音乐"+i);  
        }  
    }  
}  
  
public class ExtendsThreadDemo {  
    public static void main(String[] args) {  
          
        for(int j = 0; j < 50; j ++){  
            System.out.println("运行游戏"+j);  
            if(j == 10){  
                //4):在main方法(线程)中,创建线程对象,并启动线程.  
                MusicThread music = new MusicThread();  
                music.start();  
            }  
        }  
    }  
  
}

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