内部类不能有静态声明 - public static final String []

Question

我在第5行遇到了问题

public static final String[] CREATIVE_SDK_SCOPES = { "email", "profile", "address" };

  

内部类不能有静态声明

 public final class Keys {
    public static final String CREATIVE_SDK_CLIENT_ID = "xxxxxxxx";
    public static final String CREATIVE_SDK_CLIENT_SECRET = "xxxxxxxxx";
    public static final String CREATIVE_SDK_REDIRECT_URI = "xxxxxxxxxx";
    public static final String[] CREATIVE_SDK_SCOPES = { "email", "profile", "address" };
  }
  private static final String CREATIVE_SDK_CLIENT_ID = Keys.CREATIVE_SDK_CLIENT_ID;
  private static final String CREATIVE_SDK_CLIENT_SECRET = Keys.CREATIVE_SDK_CLIENT_SECRET;
  private static final String CREATIVE_SDK_REDIRECT_URI = Keys.CREATIVE_SDK_REDIRECT_URI;
  private static final String[] CREATIVE_SDK_SCOPES = Keys.CREATIVE_SDK_SCOPES;

你能解释它的含义以及解决方法吗？

Answer 1

  

因为内部类与实例相关联，所以它本身不能定义任何静态成员。

https://docs.oracle.com/javase/tutorial/java/javaOO/nested.html

您必须使用静态嵌套类。

public static final class Keys {