Removed unused methods.
Removed unused assignments..
Removed unused assignments...
Removed redundant semicolons.
Fixed called to toArray()
Replaced manual array copy with System#arraycopy() call
Simplified redundant toString calls.
Removed unnecessary return statements.
Removed redundant new array creation.
Removed redundant casts.
Removed useless assignment.
Fixed typo.
Removed useless for loop
Removed redundant null checks.
Analyzed nullity for non Slick2D packages.
Analyzed nullity for Slick2D packages.
Removed pointless arithmetic.
Some Javadoc fixes.
Using Nonnull annotation.
Weakened declaration access.