OOP.APPF

Avoid "public" or package-private instance fields

Description

This rule flags any "public" or package-private instance field.

Instance fields are an implementation detail of your class. It is good practice to hide such implementation details from users of your class. Instead of making these fields "public" or package-private, provide the user with methods to access and/or change these fields.

Example

 package OOP;
 
 class APPF {
    int a = 10;           // Violation
    private int c = 14;
 }

Repair

Declare the field "private" and provide access methods to the field if needed.

Reference

Haggar, Peter. Practical Java - Programming Language Guide. Addison Wesley, 2000, pp.170 - 173.