Write a program that launches 1000 threads. Each thread adds 1 to a variable sum that initially is 0 (zero).

The answer is below

Explanation:

Using Java programming language.

*//we have the following codes//*

import java.util.concurrent.ExecutorService;

import java.util.concurrent.Executors;

public class My_Answer {

private static Integer sum = 0;

public static void main(String[] args) {

 ExecutorService executor = Executors.newCachedThreadPool();

 for (int i = 0; i < 1000; i++) {

  executor.execute(new AddOne());

 }

 executor.shutdown();

 while (!executor.isTerminated()) {

 }

 System.out.println("sum = " + sum);

}

private static class Add_Extra implements Runnable {

 public void run() {

  sum++;

 }

}

}

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