Java单例设计模式

class Singleton{
	private static Singleton instance = new Singleton();
	private Singleton(){
	}

	public static Singleton getInstance(){
		return instance;
	}

	public void print(){
		System.out.println("Hello Word");
	}
}

public class singleton {

	public static void main(String[] args) {
		// TODO 自动生成的方法存根
		Singleton s1 = Singleton.getInstance();
		Singleton s2 = Singleton.getInstance();
		Singleton s3 = Singleton.getInstance();
		s1.print();
		s2.print();
		s3.print();
	}

}