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sankhamita
singleton java implementation
1 Answer(s)      6 years and 2 months ago
Posted in : Java Interview Questions


What is Singleton? And how can it get implemented in Java program?


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March 17, 2008 at 9:04 PM


Singleton is used to create only one instance of an object that means there would be only one instance of an object in the whole application.

Example of Singleton Class in JAVA

Singleton.java
- - - - - - - -

public class Singleton{

private static volatile Singleton instance;
private Singleton() {}

public static Singleton getInstance(){
if(instance == null)
synchronized(Singleton.class) {
if (instance == null)
instance = new Singleton();
}
return instance;
}
public static void main(String args[]){
Singleton singleton = Singleton.getInstance();
System.out.println("Hello singleton");
}
}

- - - - - - - - - - -
Resource of singleton class in Java
http://www.roseindia.net/help/java/s/singleton-class.shtml

- - - - - - - -
;) Meeya


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