年龄和钱不能有负数
public void age(int age){
if(age<=0||age>=120){
System.out.println("请重新输出");
}else {
System.out.println(age);
}
}
public void withdraw(double money) {
if (money < 0) {
System.out.println("余额不足!");
} else {
balance -= money;
}
}
public void deposit(double money) {
/**
* @Description: 存钱
* @Author: Mr.Tony
* @Date: 2020/7/26 15:52
* @Param: [money]
* @Return: void
*/
if (money < 0) {
System.out.println("请重新尝试");
}
balance += money;
}