4.0.0 checkstyle checkstyle-optional 4.3 jar Checkstyle Optional http://checkstyle.sourceforge.net/ Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard GNU Lesser General Public License http://www.gnu.org/licenses/lgpl.txt http://checkstyle.cvs.sourceforge.net/checkstyle/ checkstyle checkstyle 4.3