单例模式

Singleton.java

import static com.mceiba.util.Print.*;
class Sun{
	//Singleton
	private Sun(){}
	private static Sun sun=new Sun();
	public static Sun makeSun(){
		return sun;
	}
}

public class Singleton{
	public static void main(String[] args){
		//!Sundae sun=new Sundae();
		Sun sun=Sun.makeSun();
		println("Singleton!");
	}
}