Computer scienceProgramming languagesJavaWorking with dataMultithreadingBasics of threads

Thread management

Summing with threads

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The following code is supposed to find the general sum of two inclusive integer ranges concurrently. Unfortunately, this code doesn't work correctly. Try and fix it. Read the comments for a better understanding.

Additional explanations: the implemented class RangeSummator extends Thread and overrides the method run. It sums the range passed to the constructor (left and right limits as integers). The class has a getter getResult() that returns the calculated sum or 0 if the thread has not calculated the sum yet.

Note: you do not need to write the RangeSummator class. It will be added to your solution automatically.

Sample Input 1:

1 5
2 4

Sample Output 1:

Write a program in Java 17

import java.util.Scanner;

public class Main {

private static long mainThreadId = Thread.currentThread().getId();

public static void main(String[] args) throws InterruptedException {

Scanner scanner = new Scanner(System.in);

int from1Incl = scanner.nextInt(); // left limit of the first range

int to1Incl = scanner.nextInt(); // right limit of the first range

int from2Incl = scanner.nextInt(); // left limit of the second range

int to2Incl = scanner.nextInt(); // right limit of the second range

RangeSummator summator1 = new RangeSummator(from1Incl, to1Incl); // first summator

RangeSummator summator2 = new RangeSummator(from2Incl, to2Incl); // second summator

long partialSum1 = summator1.getResult();

long partialSum2 = summator2.getResult();

long sum = partialSum1 + partialSum2; // the sum is 0, fix it!

System.out.println(sum);

}

//Don't change the code below

static class RangeSummator extends Thread {

int fromIncl;

int toIncl;

private volatile long result = 0;

public RangeSummator(int fromIncl, int toIncl) {

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