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Scala program to check a thread is alive or not

Here, we are going to learn how to check a thread is alive or not in Scala programming language?
Submitted by Nidhi, on June 24, 2021 [Last updated : March 12, 2023]

Scala - Check a Thread is Alive?

Here, we will create a class by extending the Thread class and implement the run() method. And, we will check a created thread is alive or not using the isAlive() method. The isAlive() method return true if thread is alive. Otherwise, it returns false.

Scala code to check a thread is alive or not

The source code to check a thread is alive or not is given below. The given program is compiled and executed on the ubuntu 18.04 operating system successfully.

// Scala program to check a
// thread is alive or not

class MyThread extends Thread {
  override def run() {
    println("Thread is running");
  }
}

object Sample {
  // Main method
  def main(args: Array[String]) {
    var thrd = new MyThread();

    thrd.start();

    if (thrd.isAlive())
      println("Thread is alive");
    else
      println("Thread is not alive");
  }
}

Output

Thread is alive
Thread is running

Explanation

Here, we used an object-oriented approach to create the program. And, we created an object Sample.

Here we created a class MyThread by extending the thread class and implement the run() method.

And, we also created a singleton object Sample and defined the main() function. The main() function is the entry point for the program.

In the main() function, we created an object of the MyThread class and start the execution of the thread. And, we checked created thread is alive or not. Then we printed the appropriate message on the console screen.

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