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AvoidProtectedFieldInFinalClass

AvoidProtectedFieldInFinalClass

Do not use protected fields in final classes since they cannot be subclassed. Clarify your intent by using private or package access modifiers instead.



//ClassOrInterfaceDeclaration[@Final='true']
/ClassOrInterfaceBody/ClassOrInterfaceBodyDeclaration
/FieldDeclaration[@Protected='true']
 

Example(s):



public final class Bar {
  private int x;
  protected int y;  // bar cannot be subclassed, so is y really private or package visible?
  Bar() {}
}