Value of local variable is not used
Unused import
Dead Code (e.g. if(false))
Method with a constructor name
Unnecessary else statement
Comparing identical values (x==x)
Assignment has no effect (x=x)
Serializable class without serialVersionUID
Type parameter hides another type
Field declaration hides another field or variable
Switch is missing default case
Unused private member
Unchecked generic type operation
Usage of a raw type
Missing @Override annotation
Null pointer access
Potential null pointer access
Redundant null check
