Added check style configuration to project (#11)

checkstyle.xml

@@ -0,0 +1,145 @@
+<?xml version="1.0"?>
+<!DOCTYPE module PUBLIC
+        "-//Puppy Crawl//DTD Check Configuration 1.2//EN"
+        "http://www.puppycrawl.com/dtds/configuration_1_2.dtd">
+
+<module name="Checker">
+    <module name="NewlineAtEndOfFile"/>
+    <module name="FileTabCharacter"/>
+
+    <!-- Trailing spaces -->
+    <module name="RegexpSingleline">
+        <property name="format" value="\s+$"/>
+        <property name="message" value="Line has trailing spaces."/>
+    </module>
+
+    <!-- Checks for consecutive blank lines -->
+    <module name="RegexpMultiline">
+        <property name="format" value="^[ \t\r]*\n[ \t\r]*$"/>
+        <property name="message" value="Consecutive blank lines."/>
+    </module>
+
+    <module name="TreeWalker">
+        <property name="cacheFile" value="${checkstyle.cache.file}"/>
+
+        <!-- Checks for Javadoc comments.                     -->
+        <!-- See http://checkstyle.sf.net/config_javadoc.html -->
+        <!--module name="JavadocMethod"/-->
+        <!--module name="JavadocType"/-->
+        <!--module name="JavadocVariable"/-->
+        <!--module name="JavadocStyle"/-->
+
+
+        <!-- Checks for Naming Conventions.                  -->
+        <!-- See http://checkstyle.sf.net/config_naming.html -->
+        <module name="ConstantName"/>
+        <module name="LocalFinalVariableName"/>
+        <module name="LocalVariableName"/>
+        <module name="MemberName"/>
+        <module name="MethodName"/>
+        <module name="PackageName"/>
+        <module name="ParameterName"/>
+        <module name="StaticVariableName"/>
+        <module name="TypeName"/>
+
+
+        <!-- Checks for imports                              -->
+        <!-- See http://checkstyle.sf.net/config_import.html -->
+        <module name="AvoidStarImport"/>
+        <module name="IllegalImport"/> <!-- defaults to sun.* packages -->
+        <module name="ImportOrder"/>
+        <module name="RedundantImport"/>
+        <module name="UnusedImports">
+            <property name="processJavadoc" value="true"/>
+        </module>
+
+
+        <!-- Checks for Size Violations.                    -->
+        <!-- See http://checkstyle.sf.net/config_sizes.html -->
+        <!--<module name="LineLength">-->
+        <!--<property name="max" value="100"/>-->
+        <!--</module>-->
+        <!--<module name="MethodLength"/>-->
+        <!--module name="ParameterNumber"/-->
+
+
+        <!-- Checks for whitespace                               -->
+        <!-- See http://checkstyle.sf.net/config_whitespace.html -->
+        <module name="EmptyForInitializerPad"/>
+        <module name="EmptyForIteratorPad"/>
+        <module name="EmptyLineSeparator"/>
+        <module name="FileTabCharacter"/>
+        <module name="GenericWhitespace"/>
+        <module name="MethodParamPad"/>
+        <module name="NoWhitespaceAfter">
+            <property name="tokens" value="BNOT, DEC, DOT, INC, LNOT, UNARY_MINUS, UNARY_PLUS"/>
+        </module>
+        <module name="NoWhitespaceBefore"/>
+        <module name="OperatorWrap"/>
+        <module name="ParenPad"/>
+        <module name="TypecastParenPad"/>
+        <module name="WhitespaceAfter"/>
+        <module name="WhitespaceAround"/>
+
+
+        <!-- Modifier Checks                                    -->
+        <!-- See http://checkstyle.sf.net/config_modifiers.html -->
+        <module name="ModifierOrder"/>
+        <module name="RedundantModifier"/>
+
+
+        <!-- Checks for blocks. You know, those {}'s         -->
+        <!-- See http://checkstyle.sf.net/config_blocks.html -->
+        <module name="AvoidNestedBlocks"/>
+        <module name="EmptyBlock"/>
+        <module name="EmptyCatchBlock"/>
+        <module name="LeftCurly"/>
+        <!--module name="NeedBraces"/-->
+        <module name="RightCurly"/>
+
+
+        <!-- Checks for common coding problems               -->
+        <!-- See http://checkstyle.sf.net/config_coding.html -->
+        <!--module name="AvoidInlineConditionals"/-->
+        <module name="CovariantEquals"/>
+        <module name="DefaultComesLast"/>
+        <module name="EmptyStatement"/>
+        <!--<module name="EqualsAvoidNull"/>-->
+        <module name="EqualsHashCode"/>
+        <module name="FallThrough"/>
+        <!--<module name="FinalLocalVariable"/>-->
+        <module name="HiddenField"/>
+        <module name="IllegalCatch"/>
+        <module name="IllegalInstantiation"/>
+        <!--module name="InnerAssignment"/-->
+        <module name="MagicNumber"/>
+        <module name="MissingSwitchDefault"/>
+        <module name="MultipleStringLiterals"/>
+        <module name="MultipleVariableDeclarations"/>
+        <module name="OneStatementPerLine"/>
+        <module name="OverloadMethodsDeclarationOrder"/>
+        <module name="PackageDeclaration"/>
+        <module name="ParameterAssignment"/>
+        <module name="SimplifyBooleanExpression"/>
+        <module name="SimplifyBooleanReturn"/>
+        <module name="StringLiteralEquality"/>
+
+        <!-- Checks for class design                         -->
+        <!-- See http://checkstyle.sf.net/config_design.html -->
+        <!--module name="DesignForExtension"/-->
+        <!--module name="FinalClass"/-->
+        <module name="HideUtilityClassConstructor"/>
+        <module name="InterfaceIsType"/>
+        <!--module name="VisibilityModifier"/-->
+
+
+        <!-- Miscellaneous other checks.                   -->
+        <!-- See http://checkstyle.sf.net/config_misc.html -->
+        <module name="ArrayTypeStyle"/>
+        <module name="CommentsIndentation"/>
+        <!--module name="FinalParameters"/-->
+        <module name="Indentation"/>
+        <module name="TodoComment"/>
+        <module name="UpperEll"/>
+    </module>
+</module>