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GeezerVison is showing github.com — java-programs/Multithread_Application/multithread.java at main · IntScription/java-programs

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multithread.java

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/*
Write a Java program that implements a multithreaded application that has three threads.
First thread generates a random integer for every 1 second;
second thread computes the square of the number and prints;
third thread will print the value the cube of the number.
*/
package Multithread_Application;
import java.util.Random;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
class Square implements Runnable {
private int num;
Square(int n) {
num = n;
}
public void printSquare() {
System.out.println("Square of " + num + " is " + (num * num));
}
public void run() {
printSquare();
}
}
class Cube implements Runnable {
private int num;
Cube(int n) {
num = n;
}
public void printCube() {
System.out.println("Cube of " + num + " is " + (num * num * num));
}
public void run() {
printCube();
}
}
class RandInt extends Thread {
private final ExecutorService executor = Executors.newFixedThreadPool(2);
public void printRandom() throws InterruptedException {
Random rd = new Random();
while (true) {
int rnum = rd.nextInt(10);
System.out.println("Random Number is " + rnum);
Thread.sleep(3000);
executor.submit(new Square(rnum));
executor.submit(new Cube(rnum));
}
}
public void run() {
try {
printRandom();
} catch (InterruptedException e) {
}
}
public void shutdown() {
executor.shutdown();
}
public void awaitTermination() throws InterruptedException {
executor.awaitTermination(Long.MAX_VALUE, TimeUnit.NANOSECONDS);
}
}
public class multithread {
public static void main(String[] args) {
RandInt ob1 = new RandInt();
ob1.start();
try {
Thread.sleep(15000); // Run for 15 seconds
ob1.shutdown();
ob1.awaitTermination();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
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