当 Do/While 满足时 Java 输入停止工作

Question

我正在尝试创建一个运行循环，用户可以输入牡蛎进入/离开牡蛎吧，直到容量达到 500。

当容量达到 500 时，我希望用户仍然能够输入负数(因为顾客仍然可以离开)，但不能输入任何正数。不幸的是，一旦满足条件，我就无法输入任何内容。

    Scanner input = new Scanner(System.in);
        int maxCapacity = 500;
        int oystersIn = 0;
        int oystersOut;
        int currentCapacity = 0;
    System.out.println("Welcome to the Half Shell Dive Bar, Capacity is 500, and there are currently "+ currentCapacity + " oysters in the bar" );
    currentCapacity = 0;
    do {
        oystersIn=0;
        System.out.println("How many oysters are coming in?");
        oystersIn = input.nextInt();        
        currentCapacity += oystersIn;
        System.out.println("Now there are " + currentCapacity + " oysters in the bar");
    }
    while (oystersIn + currentCapacity <= 500);

    }

}

任何意见都将不胜感激，谢谢!

Answer 1

假设你想永远循环，你需要检查容量是否不足和过多

do {
    oystersIn=0;
    System.out.println("How many oysters are coming in?");
    oystersIn = input.nextInt(); 
    if (oystersIn + currentCapacity >= 500) {
        System.out.println("Sorry full - waiting for some one to leave");
        continue;
    }
    if (oystersIn + currentCapacity < 0) {
        System.out.println("Can't go negative");
        continue;
    }
    currentCapacity += oystersIn;
    System.out.println("Now there are " + currentCapacity + " oysters in the bar");
}
while (true);