How to check the status of each thread in multi-threaded code (JAVA)

First we write a simple multi-threaded code:

class MyThread extends Thread{
    @Override
    public void run() {
        while (true) {
            System.out.println("创建的一个新线程");
            //让循环慢一点
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}

public class Test {

    public static void main(String[] args) {
        Thread tmp = new MyThread();
        tmp.start();
        while (true){
            System.out.println("main线程");
            //让循环慢一点
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }

}

This code simply creates a new thread and lets the new thread and the old thread print different things respectively.

The following is the text:

Step 1: Run the above code (Note: The code must be running during the following operations)

Step 2: Find the location of the JDK installation

If your coding environment is IDEA and you forget the installation location of JDK, you can refer to the following steps:

Step 3: Enter the bin directory, find jconsole.exe and open it (if nothing is found, try opening it as an administrator)

 

Step 4: Select the file name where you want to run the code

Step 5: Click Connect and then click Unsafe Connection

Hope the above content can help you.