int无法解除引用错误 [英] int cannot be dereferenced error

问题描述

我在下面的代码中有一个int无法解除引用的错误我//错误在这里。我很困惑，因为变量b用于引用行后面的empl数组中的一个点而不显示为错误。那么我该如何解决这个问题，为什么会产生错误呢？
我将不胜感激任何帮助。示例代码也很棒，因为这似乎是我学得最好的方式。谢谢！

I have the int cannot be dereferenced error in the below code where I have //error is here. I'm confused because the variable b is used to reference a spot in the empl array later in the line without showing as an error. So how do I fix this and why is it generating an error? I would appreciate any help. Example code would be great too as that seems to be the way I learn best. Thanks!

public static void bubbleSort(Employee[] empl) {
    for (int a = 1; a < empl.length; a++) 
    {
        for (int b = 0; b < empl.length - a; b++) 
        {
            if (((empl[b].//error is here
                    getEmployeeNumber()).compareTo
                   ((empl[b + 1].getEmployeeNumber()))) > 0) 
            {
               // swap employees[b] with employees[b+1]
               Employee temp = empl[b];
               empl[b] = empl[b + 1];
               empl[b + 1] = temp;
            }
        }
    }
}

编辑：欢迎使用员工编号对数组进行排序的任何其他建议。

Any other suggestions for sorting the array by Employee Number are welcome.

推荐答案

getEmployeeNumber（）显然返回 int 。

int 是原始类型，而不是对象。

因此，您无法在其上调用 compareTo（）等方法。

int is a primitive type, not an object.
Therefore, you cannot call methods like compareTo() on it.

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