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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class DeadLock {
  9. static class Friend {
  10.     private final String name;
  11.  
  12.     public Friend(String name) {
  13.         this.name = name;
  14.     }
  15.  
  16.     public String getName() {
  17.         return this.name;
  18.     }
  19.  
  20.     public synchronized void bow(Friend bower) {
  21.         //My Changes
  22.         System.out.format("%s: %s" + " has bowed to me!%n", this.name, bower.getName()); //Line 17
  23.         //System.out.println(this.name + ": " + bower.getName() + " has bowed to me!"); //Line 18
  24.         bower.bowBack(this);
  25.     }
  26.  
  27.     public synchronized void bowBack(Friend bower) {
  28.         System.out.format("%s: %s" + " has bowed back to me!%n", this.name, bower.getName());
  29.     }
  30. }
  31.  
  32. public static void main(String[] args) {
  33.     final Friend alphonse = new Friend("Alphonse");
  34.     final Friend gaston = new Friend("Gaston");
  35.     new Thread(new Runnable() {
  36.         @Override
  37.         public void run() {
  38.             alphonse.bow(gaston);
  39.         }
  40.     }).start();
  41.  
  42.     new Thread(new Runnable() {
  43.         @Override
  44.         public void run() {
  45.             gaston.bow(alphonse);
  46.         }
  47.     }).start();
  48. }
  49. }
Success #stdin #stdout 0.04s 711168KB
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stdin
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Standard input is empty
stdout
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Alphonse: Gaston has bowed to me!
Gaston: Alphonse has bowed back to me!
Gaston: Alphonse has bowed to me!
Alphonse: Gaston has bowed back to me!
https://ideone.com/bV6nd8
language:
Java (HotSpot 12)
created:
7 years ago
visibility:
public

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