Java language level issues

'assert' statement  

Reports assert statements.

Annotation  

Reports annotations.

Annotation interface  

Reports annotation interfaces.

Enhanced 'for' statement  

Reports enhanced for statements.

Enumerated class  

Reports enum classes.

Forward compatibility  

Reports Java code constructs that may fail to compile in future Java versions.

Varargs method  

Reports methods that accept an arbitrary number of parameters (also known as varargs methods).