[checkstyle] make parameters final
add javadoc for generic type
[checkstyle] remove magic number
make parameters final
add javadoc for generic type
[checkstyle] remove trailing spaces
make parameters final
[checkstyle] make parameters final
add javadoc for generic type
[checkstyle] remove magic number
remove useless statement
[checkstyle] remove magic number
fix static variable name pattern
[checkstyle] remove '.*' form in imports
make parameters final
add whitespace after 'if'
remove magic number