我的方法无法识别Java枚举类型 [英] Java Enum types not being recognized by my methods

问题描述

当前正在开发用于单人作业的代码气味检测器。我制作了一个抽象的CodeSmell类，其中有两个具体的子类-ClassLevelSmell和MethodLevelSmell。 CodeSmell类具有SmellType类型的受保护字段。构造函数示例如下：

Currently developing a code smell detector for a uni assignment. I have made an abstract CodeSmell class, with two concrete subclasses - ClassLevelSmell and MethodLevelSmell. The CodeSmell class has a protected field of type SmellType. A sample constructor is as follows:

public ClassLevelSmell(ClassDefinition classDef, SmellType type){
    smellyClass = classDef;
    this.smell = type;
}

SmellType是我定义的枚举，如下所示：

SmellType is an enum I defined, which looks like this:

public enum SmellType {
LONG_CLASS, LONG_METHOD, PRIMITIVE_OBSESSION, LONG_PARAM_LIST}

然后，我有了一个SmellDetector对象，其中有许多方法可以比较所分析的类和方法的统计信息（例如它们的行数，基本声明的数量等）并创建如果发现气味，则返回一个新的CodeSmell对象。因此，我的代码如下所示：

I then have a SmellDetector object, with numerous methods that compare the statistics of analyzed classes and methods (such as their number of lines, number of primitive declarations etc) and creates a new CodeSmell object if a smell is found. So my code for this looks like this:

    private void detectLongClass(ClassDefinition classDef) {
    if(classDef.getNumLines() > 250){
        smells.add(new ClassLevelSmell(classDef, LONG_CLASS));
    }
}

每个SmellDetector对象都有一个 smells ，CodeSmells的ArrayList。但是，当我尝试将SmellType LONG_CLASS传递到ClassLevelMethod的构造函数中时，我在日食中收到了编译器警告，告诉我 LONG_CLASS无法解析为变量。我在使用枚举类型时是否犯了一些错误？

Each SmellDetector object has a field smells, an ArrayList of CodeSmells. However, I'm getting a compiler warning in eclipse when I try to pass the SmellType LONG_CLASS into the constructor for the ClassLevelMethod, telling me "LONG_CLASS cannot be resolved to a variable". Am I making some mistake with the use of Enumerated types? What do?

推荐答案

要引用枚举值，您需要使用带类名的合格格式或使用静态导入。所以要么做到：

To reference enum values you either need to use the qualified form with the class name or use static imports. So either make it:

smells.add(new ClassLevelSmell(classDef, SmellType.LONG_CLASS));

或执行以下操作：

// at the top of your file:
import static packagename.SmellType.*;

smells.add(new ClassLevelSmell(classDef, LONG_CLASS));

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