TIOBE - Java Coding Standard

Rule: CodeSize7

Synopsis:	Too many fields
Language:	Java
Severity Level:	3
Category:	CodeSize

Description:

Classes that have too many fields could be redesigned to have fewer fields, possibly through some nested object grouping of some of the information. For example, a class with city/state/zip fields could instead have one Address field. This rule is triggered in case a class has 15 or more fields.

public class Person {
   String one;
   int two;
   int three;
   [... many more public fields ...]
}