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  1. // package demo;
  2.  
  3. import java.util.Scanner;
  4.  
  5. public class Main {
  6. //    public static Scanner scanner = new Scanner(System.in);
  7.     static class SharedData{
  8.         public boolean shared = false;
  9.         public int a,b;
  10.     }
  11.     static class ThreadOne extends Thread{
  12.         final SharedData sharedData;
  13.         public ThreadOne(SharedData sharedData){
  14.             this.sharedData = sharedData;
  15.         }
  16.  
  17.         @Override
  18.         public void run() {
  19.             Scanner scanner = new Scanner(System.in);
  20.             while (true){
  21.                 synchronized (sharedData){
  22.                     if(sharedData.shared){
  23.                         try {
  24.                             sharedData.wait();
  25.                         } catch (InterruptedException e) {
  26.                             e.printStackTrace();
  27.                         }
  28.                     }else{
  29.                         System.out.print("Enter the first number: ");
  30.                         sharedData.a = scanner.nextInt();
  31.                         System.out.print("Enter the second number: ");
  32.                         sharedData.b = scanner.nextInt();
  33.                         sharedData.shared = true;
  34.                         sharedData.notify();
  35.                     }
  36.                 }
  37.             }
  38.         }
  39.     }
  40.  
  41.     static class ThreadTwo extends Thread{
  42.         final SharedData sharedData;
  43.  
  44.         public ThreadTwo(SharedData sharedData){
  45.             this.sharedData = sharedData;
  46.         }
  47.  
  48.         @Override
  49.         public void run() {
  50.             while(true){
  51.                 synchronized (sharedData){
  52.                     if(sharedData.shared){
  53.                         System.out.println("Addition result: " + (sharedData.a+sharedData.b));
  54.                         sharedData.shared = false;
  55.                         sharedData.notify();
  56.                     }
  57.                     try {
  58.                         sharedData.wait();
  59.                     } catch (InterruptedException e) {
  60.                         e.printStackTrace();
  61.                     }
  62.                 }
  63.             }
  64.         }
  65.     }
  66.  
  67.     public static void main(String[] args) throws InterruptedException {
  68.             SharedData sharedData = new SharedData();
  69.             ThreadOne t1 = new ThreadOne(sharedData);
  70.             ThreadTwo t2 = new ThreadTwo(sharedData);
  71.             t1.start();
  72.             t2.start();
  73. //            t1.join();
  74. //            t2.join();
  75.     }
  76. }
  77.  
Time limit exceeded #stdin #stdout #stderr 5s 36488KB
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stdin
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Standard input is empty
stdout
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Enter the first number:
stderr
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Exception in thread "Thread-0" java.util.NoSuchElementException
	at java.base/java.util.Scanner.throwFor(Scanner.java:937)
	at java.base/java.util.Scanner.next(Scanner.java:1594)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2258)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2212)
	at Main$ThreadOne.run(Main.java:30)
https://ideone.com/90ozdr
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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