如何使用枚举？ [英] How to use enum?

问题描述

我写一个code为应用。但我得到以下错误。

I am writing a code for an app. But I am getting the following error.

我张贴的屏幕截图。请帮我解决错误。

I am posting the screen shot. Please help me to resolve the error.

该错误是在我使用的枚举的部分。

The error is in the part where I use enum.

public static enum Mode
  {
    static
    {
      CORRECT = new Mode("CORRECT", 2);
      Mode[] arrayOfMode = new Mode[3];
      arrayOfMode[0] = NO_ASYNC_TASK;
      arrayOfMode[1] = NO_DOWNLOADED_DRAWABLE;
      arrayOfMode[2] = CORRECT;
    }
  }

感谢每个人的答案。

Thanks every one for the answers.

推荐答案

您定义需要一些改进。首先，没有必要定义枚举为静态。此外，您还需要与其他班级把所有的枚举在特定的独立的阶级没有，这将使您的解决方案更有条理。此外，静态是保留关键字的语言，所以没有必要使用静态的内部块。

Your definition needs some enhancements. First of all there is no need to define the enumeration as static. Also, you need to put all of your enumerations in a specific independent class not with other classes, this would make your solution more organised. Additionally, 'static' is a reserved keyword for the language, so no need to use static for an inner block.

您可以定义使用或不整数值的枚举作为如下：

You can define the enumerations with or without integer values as in the followings:

public enum Mode
{
    NO_ASYNC_TASK,
    NO_DOWNLOADED_DRAWABLE,
    CORRECT
}

或

public enum Mode
{
    NO_ASYNC_TASK(1),
    NO_DOWNLOADED_DRAWABLE(2),
    CORRECT(3);

    private final int id;
    Mode(int id) { this.id = id; }
    public int getValue() { return id; }
}

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