Encapsulation

'public' field  

Reports public fields.

'public' nested class  

Reports public nested classes.

Accessing a non-public field of another object  

Reports accesses to private or protected fields of another object.

Assignment or return of field with mutable type  

Reports return of, or assignment from a method parameter to an array or a mutable type like Collection, Date, Map, Calendar, etc.

Package-visible field  

Reports fields that are declared without any access modifier (also known as package-private).

Package-visible nested class  

Reports nested classes that are declared without any access modifier (also known as package-private).

Protected field  

Reports protected fields.

Protected nested class  

Reports protected nested classes.