Java 枚举内部类
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Enum Inside Class
提问by coolDude
I am trying to define an enum within a class but Eclipse continues to underline my code in the lovely red color. Here is what my code looks like for the most part:
我试图在一个类中定义一个枚举，但 Eclipse 继续用可爱的红色在我的代码下划线。这是我的代码的大部分内容：
package campusvilleFoodBank;
import java.util.NoSuchElementException;
import java.util.Scanner;
public class FoodArrayList {
public enum Days {SUN, MON, TUE, WED, THUR, FRI, SAT}
private Food [] foodArray;
private int iterator;
private boolean startIndexing;
private static final int MAX = 24;
public FoodArrayList(){
foodArray = new Food [MAX];
iterator = 0;
}
public FoodArrayList(int arraySize){
foodArray = new Food [arraySize];
iterator = 0;
}
//Rest of code, with more complicated methods here
}
I must be missing something very simple, it's likely to be a syntax error.... The code that follows involves methods such as my toString(), some sorting methods for the foodArrayinstance variable, and things along those lines. I do not have a main method defined. I know that I can define an enum within a class definition and all of the code I've seen elsewhere is written nearly exactly the same as to what I have. However, Eclipse does not seem to recognize even the enumdeclaration and I don't believe I need to import anything.
我一定遗漏了一些非常简单的东西，它很可能是语法错误....后面的代码涉及诸如 my 之类的toString()方法、foodArray实例变量的一些排序方法以及这些方面的事情。我没有定义主要方法。我知道我可以在类定义中定义一个枚举，并且我在其他地方看到的所有代码的编写方式几乎与我所拥有的完全相同。但是，Eclipse 似乎甚至无法识别enum声明，我认为我不需要导入任何内容。
Here is what I see in Eclipse for the code I have an error with:
这是我在 Eclipse 中看到的错误代码：
For comparison, here is some enum code from another, separate .java file that appears to be without error:
为了进行比较，这里有一些来自另一个似乎没有错误的单独 .java 文件的枚举代码：
Any assistance on this would be appreciated. Let me know if further clarification is needed.
对此的任何帮助将不胜感激。让我知道是否需要进一步澄清。
采纳答案by esteban rincon
It could be a couple of things but not related to enum, this is fine.
这可能是几件事，但与 无关enum，这很好。
- Seems to me that unless
Fooddoes exist, it MUSTbe created If it doesexist, then it must reside in a different package, which in turn you have to
importit like thisimport package_name.package2.Food;It could be that your
classname is not identicalto youfilenameFoodArrayListSometimes your
IDEin this caseEclipseneeds some help, try saving the file, closing it and opening it back up.
- 在我看来，除非
Food确实存在，否则必须创建它 如果它确实存在，那么它必须驻留在不同的包中，反过来你必须
import像这样import package_name.package2.Food;可能是你的
class名字和你的名字不一样fileFoodArrayList有时您
IDE在这种情况下Eclipse需要一些帮助，请尝试保存文件，关闭它并重新打开它。
回答by harini
you have a semicolon missing at the end of the enum in the FoodArrayList class
您在 FoodArrayList 类中的枚举末尾缺少分号
