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Java program to get max priority of ThreadGroup

Java example to get max priority of ThreadGroup.
Submitted by Nidhi, on April 11, 2022

Problem Solution:

In this program, we will create a thread group using ThreadGroup class and add child threads to the group and get the max priority of the Thread group using the getMaxPriority() method.

Program/Source Code:

The source code to get the max priority of the ThreadGroup is given below. The given program is compiled and executed successfully.

// Java program to get max priority 
// of ThreadGroup

class MyThread extends Thread {
  MyThread(String threadname, ThreadGroup tg) {
    super(tg, threadname);
    start();
  }
  public void run() {
    try {
      Thread.sleep(100);
      System.out.println(Thread.currentThread().getName() + " is finished");
    } catch (Exception e) {
      System.out.println(e);
    }
  }
}

public class Main {
  public static void main(String[] args) {
    try {
      ThreadGroup group = new ThreadGroup("Parent thread");

      MyThread t1 = new MyThread("Child Thread1", group);
      System.out.println(t1.getName() + " is started");

      MyThread t2 = new MyThread("Child Thread2", group);
      System.out.println(t2.getName() + " is started");

      t1.join();
      t2.join();

      System.out.println("Maximum priority of Thread Group: " + group.getMaxPriority());

    } catch (Exception e) {
      System.out.println(e);
    }
  }
}

Output:

Child Thread1 is started
Child Thread2 is started
Child Thread1 is finished
Child Thread2 is finished
Maximum priority of Thread Group: 10

Explanation:

In the above program, we created two classes MyThread and Main. We created MyThread class by extending the Thread class.

The Main class contains a main() method. The main() method is the entry point for the program. Here, we created an object of ThreadGroup class and added the child thread into the thread group. After that, we got the maximum priority of the thread group using the getMaxPriority() method and printed it.

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