Java : If statement to process amount you want whilst discarding the rest?

Question

我有以下脚本:

public void addcheese(int addcheese) {
    if (cheeseamount + addcheese < mincapacity) {
        System.out.println("Sorry no more cheese can be removed.");
    } else if (cheeseamount + addcheese <= maxcapacity) {
        if ((cheeseamount + addcheese > 1900) && (cheeseamount + addcheese < 2000)) {
            System.out.println("Warning : The box is nearing it's maximum capacity.");
        }
        cheeseamount = cheeseamount + addcheese;
    }
    else {
        System.out.println("This storage box has reached its maximum capacity. You cannot fill it any more");
    }
}

(注意:在构造函数中 maxcapacity = 2000)

脚本按其应有的方式工作，但是有一个问题，如果我输入像 3400 这样的数字，它仍然会打印消息“此存储盒已达到其最大值...” 不添加任何内容。在这种情况下，我将如何编辑脚本以添加到框中直到最大容量，并丢弃多余的量。谢谢。

Answer 1

这是一个解决方案:

public void addcheese(int addcheese) 
{
    final int target = cheeseamount + addcheese;

    if (target < mincapacity) {
        System.out.println("Sorry, no cheese can be removed");
        return;
    }

    if (target >= maxcapacity) {
        cheeseamount = maxcapacity;
        System.out.println("Box is full");
        return;
    }

    cheeseamount = target;
    if (cheeseamount > 1900)
        System.out.println("Warning, box is nearing its maximum capacity");
}

注释:

• 留给读者的练习:警告浪费的奶酪数量!
• 命名约定:Java 使用驼峰命名法；最好是 addCheese、cheeseAmount 等。