Singleton Pattern Using Java

 package demo;

public class SingletonPattern {

private static SingletonPattern obj = null;

private SingletonPattern() {

}

public static SingletonPattern getInstance() {

if (obj == null) {

obj = new SingletonPattern();

}

return obj;

}

public static void main(String[] args) {

SingletonPattern obj = getInstance();

SingletonPattern obj1 = getInstance();

System.out.println(obj==obj1); //true no new obj is created

}

}