[add] upgrade checkstyle

Author: zolyfarkas

Diff for: checkstyle_checks.xml

@@ -180,15 +180,14 @@
         <module name="FinalParameters"/>
         <!-- <module name="TodoComment"/> -->
         <module name="UpperEll"/>
-        <module name="FileContentsHolder"/>
-
-    </module>
-    
-    <module name="SuppressionCommentFilter"/>
-    <module name="SuppressWithNearbyCommentFilter">
-        <property name="commentFormat" value="CHECKSTYLE IGNORE (\w+) FOR NEXT (\d+) LINES"/>
-        <property name="checkFormat" value="$1"/>
-        <property name="influenceFormat" value="$2"/>
+        <module name="SuppressionCommentFilter"/>
+        <module name="SuppressWithNearbyCommentFilter">
+            <property name="commentFormat" value="CHECKSTYLE IGNORE (\w+) FOR NEXT (\d+) LINES"/>
+            <property name="checkFormat" value="$1"/>
+            <property name="influenceFormat" value="$2"/>
+        </module>
+        <module name="SuppressWarningsHolder" />
     </module>
+    <module name="SuppressWarningsFilter" />
 
 </module>

Diff for: licenseheader.txt

@@ -1,30 +1,35 @@
-
-Copyright (c) 2001-2017, Zoltan Farkas All Rights Reserved.
-
-This library is free software; you can redistribute it and/or
-modify it under the terms of the GNU Lesser General Public
-License as published by the Free Software Foundation; either
-version 2.1 of the License, or (at your option) any later version.
-
-This library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU Lesser General Public
-License along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
-
-Additionally licensed with:
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-     http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
+<#if licenseFirst??>
+${licenseFirst}
+</#if>
+${licensePrefix}Copyright (c) 2001-2017, Zoltan Farkas All Rights Reserved.
+${licensePrefix}
+${licensePrefix}This library is free software; you can redistribute it and/or
+${licensePrefix}modify it under the terms of the GNU Lesser General Public
+${licensePrefix}License as published by the Free Software Foundation; either
+${licensePrefix}version 2.1 of the License, or (at your option) any later version.
+${licensePrefix}
+${licensePrefix}This library is distributed in the hope that it will be useful,
+${licensePrefix}but WITHOUT ANY WARRANTY; without even the implied warranty of
+${licensePrefix}MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+${licensePrefix}GNU General Public License for more details.
+${licensePrefix}
+${licensePrefix}You should have received a copy of the GNU Lesser General Public
+${licensePrefix}License along with this program; if not, write to the Free Software
+${licensePrefix}Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+${licensePrefix}
+${licensePrefix}Additionally licensed with:
+${licensePrefix}
+${licensePrefix}Licensed under the Apache License, Version 2.0 (the "License");
+${licensePrefix}you may not use this file except in compliance with the License.
+${licensePrefix}You may obtain a copy of the License at
+${licensePrefix}
+${licensePrefix}     http://www.apache.org/licenses/LICENSE-2.0
+${licensePrefix}
+${licensePrefix}Unless required by applicable law or agreed to in writing, software
+${licensePrefix}distributed under the License is distributed on an "AS IS" BASIS,
+${licensePrefix}WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+${licensePrefix}See the License for the specific language governing permissions and
+${licensePrefix}limitations under the License.
+<#if licenseLast??>
+${licenseLast}
+</#if>

Diff for: pom.xml

@@ -404,7 +404,7 @@ java.util.Calendar#getInstance()
                       <dependency>
                         <groupId>com.puppycrawl.tools</groupId>
                         <artifactId>checkstyle</artifactId>
-                        <version>7.8.1</version>
+                        <version>8.2</version>
                       </dependency>
                     </dependencies>                    
                     <configuration>