第三十课：单例模式

public class Singleton{

    private static final Singleton INSTANCE = new Singleton();
  
    private Singleton(){

     }

    public static Singleton getInstance(){
        return INSTANCE;
    }
    public void show(){
        System.out.println("Singleon using static initialization in Java");
    }
    public static void main(String[] args) {
        //Here is how to access this Singleton class
        Singleton.getInstance().show();
    }
}