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  4. Java Singleton Pattern
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Java Singleton Pattern

  • arpitmandliya
     + 0 comments

    I think Bill Pugh Singleton Implementation is best implementation for singleton.

    public class BillPughSingleton {
	
	private BillPughSingleton()
	{
		// private constructor
	}
	
	 private static class SingletonHelper{
	        private static final BillPughSingleton INSTANCE = new BillPughSingleton();
	    }
	    
	    public static BillPughSingleton getInstance(){
	        return SingletonHelper.INSTANCE;
	    }
}

    You need to take care of Serialization,reflection and cloning as well. More on this.Singleton design pattern