// Singleton.java
// Demonstrates Singleton design pattern

public final class Singleton {

   // Singleton object to be returned by getSingletonInstance
   private static Singleton singleton = new Singleton();

   // private constructor prevents instantiation by other objects
   private Singleton()
   {
      System.err.println( "Singleton object created." );
   }

   // return existing Singleton object
   public static Singleton getSingletonInstance()
   {
      return singleton;
   }
}


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