package?com.gnnu2016;
class?SE{
	private?static?SE?se=null;
	public?static?int?Count=2;
	private?SE(){
		System.out.println("雙例模式");
		System.out.println("創建了一個SE對象");
	}
	public?static?SE?getInstance(){
		if(se==null){
			se=new?SE();
			Count--;
		}
		return?se;
	}
	public?static?SE?getInstance2(){
		if(Count>0){
			se=new?SE();
			Count--;
		}
		return?se;
	}
}
public?class?testDL?{
	public?static?void?main(String[]?args)?{
		SE?se=SE.getInstance();
		SE?se2=se.getInstance2();
		SE?se3=SE.getInstance();
		SE?se4=SE.getInstance2();
	}
}

這樣是否實現了雙例模式？？

我知道了<==>