Java面向对象练习题之银行存取款

String ZhangHao;
	double YuE;
	Blank(String ZhangHao,double YuE)
	{
		this.ZhangHao=ZhangHao;
		this.YuE=YuE;
	}
	double cunKuan(double qianshu)
	{
		if(qianshu<0)
		{
			System.out.println("请输入正确的钱数");
		}
		else
		{
			System.out.println("存了"+qianshu);
			this.YuE+=qianshu;
		}
		return YuE;
	}
	double quKuan(double qianshu)
	{
		if(qianshu>0&&qianshu<YuE)
		{
			System.out.println("取了"+qianshu);
			this.YuE-=qianshu;
		}
		else
		{
			System.out.println("钱数不正确");
		}
		return YuE;
	}
	public static void main(String[] args)
	{
		Blank as=new Blank("123456789",500.0);
		
		System.out.println("余额是"+as.cunKuan(-100));
		System.out.println("余额是"+as.quKuan(10000));
		
	}