http://www.caughtbyjava.com/singleton-design-pattern/ Just another Technology Blog Sun, 20 Jun 2010 10:35:17 -0500 http://wordpress.org/?v=2.9.2 hourly 1 http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-59 Aman Fri, 21 Aug 2009 04:06:00 +0000 http://www.caughtbyjava.com/?p=6#comment-59 Use ENUMS if you are using java 1.5 or above. http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-28 Aputin Tue, 11 Aug 2009 08:07:35 +0000 http://www.caughtbyjava.com/?p=6#comment-28 You can use static initializer too but the direct benefit that you get is "Lazy Loading" using this implemenation. http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-26 Stefaan Mon, 10 Aug 2009 18:31:07 +0000 http://www.caughtbyjava.com/?p=6#comment-26 What if you initialize a static public or private final INSTANCE in a static {} block? You don't need to synchronize. The only difference is that you allocate memory from the moment you reference and load the class, I think. http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-25 Aputin Mon, 10 Aug 2009 16:13:33 +0000 http://www.caughtbyjava.com/?p=6#comment-25 Somebody had been asking about how to call a singleton class in java? Well the answer is that in your class just call the static method getInstance() of the singleton class. Like

public void yourMethod() {

.....

// returns the instance of the singleton class<br />Singleton object = Singleton.getInstance();

// call the method that performs the job. <br />// Let us say object.log("log this message");

}
public void yourMethod() {

…..

// returns the instance of the singleton class
Singleton object = Singleton.getInstance();

// call the method that performs the job.
// Let us say object.log(“log this message”);

}]]> http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-21 Aputin Wed, 05 Aug 2009 13:06:23 +0000 http://www.caughtbyjava.com/?p=6#comment-21 Any class that has a default constructor as private cannot be extended by any other class. That means this Singleton class will never have a derived class. http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-20 Aputin Wed, 05 Aug 2009 13:01:01 +0000 http://www.caughtbyjava.com/?p=6#comment-20 Yes you are correct only when the Singleton has the default constructor as public. But in this Implementation of Singleton we have kept default constructor as private that protects it from being extended. http://www.caughtbyjava.com/singleton-design-pattern/comment-page-1/#comment-19 Prakash panigrahi Wed, 05 Aug 2009 12:38:09 +0000 http://www.caughtbyjava.com/?p=6#comment-19 Can You tell me if this class will be a deriver calss from one base class which has overridden clone() method i.e the superclass implements clonable interface .Still i can create more then one object in your Singleton class by using clone() method.I think the best way to do this is to make this Singleton class as final ,Let me know if i am wrong.i.e

public static final Singleton getInstance() {
public static final Singleton getInstance() {]]>