Answer Posted / jinxuan

public class SingletonTest
{
public static void main(String[] args)
{
Singleton singleton = Singleton.getInstance();
Singleton singleton1 = Singleton.getInstance();

System.out.println(singleton == singleton1);
}
}

class Singleton
{
private static Singleton singleton = new Singleton();
private Singleton()
{

}

public static Singleton getInstance()
{
return singleton;
}

}
it means whenerver you new a Object,it returns the same
object address, i'ts Singleton Pattern. so your object is
immutable class

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