安装checkstyle eclipse插件
输入框中，输入checkstyle，点击Go，选择 Checkstyle Plug-in 6.11.1 ，并安装
配置checkstyle
Eclipse中，点击Window->Preferences
选择Checkstyle
点击New
Type 选择External Configuration File
点击Browse
选择checkstyle的规则文件：
checkstyle_custom.xml内容如下：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE module PUBLIC "-//Puppy Crawl//DTD Check Configuration 1.3//EN" "http://www.puppycrawl.com/dtds/configuration_1_3.dtd">
<!--
This configuration file was written by the eclipse-cs plugin configuration editor
-->
<!--
Checkstyle-Configuration: checkstyle_custom
Description: none
-->
<module name="Checker">
<property name="severity" value="warning"/>
<module name="TreeWalker">
<property name="tabWidth" value="4"/>
<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"/>
<module name="AvoidStarImport"/>
<module name="IllegalImport"/>
<module name="RedundantImport"/>
<module name="UnusedImports"/>
<module name="LineLength"/>
<module name="MethodLength"/>
<module name="ParameterNumber"/>
<module name="ModifierOrder"/>
<module name="RedundantModifier"/>
<module name="AvoidNestedBlocks"/>
<module name="EmptyBlock"/>
<module name="LeftCurly">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="NeedBraces"/>
<module name="RightCurly">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="AvoidInlineConditionals">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="EmptyStatement"/>
<module name="EqualsHashCode"/>
<module name="HiddenField"/>
<module name="IllegalInstantiation"/>
<module name="InnerAssignment"/>
<module name="MagicNumber"/>
<module name="MissingSwitchDefault"/>
<module name="SimplifyBooleanExpression"/>
<module name="SimplifyBooleanReturn"/>
<module name="DesignForExtension">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="FinalClass"/>
<module name="HideUtilityClassConstructor"/>
<module name="InterfaceIsType"/>
<module name="VisibilityModifier"/>
<module name="ArrayTypeStyle"/>
<module name="FinalParameters">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="TodoComment">
<property name="severity" value="ignore"/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
<module name="UpperEll"/>
</module>
<module name="Translation"/>
<module name="FileLength"/>
<module name="RegexpSingleline">
<property name="severity" value="ignore"/>
<property name="format" value="\s+$"/>
<property name="message" value="Line has trailing spaces."/>
<metadata name="net.sf.eclipsecs.core.lastEnabledSeverity" value="inherit"/>
</module>
</module>
两个页面都点击OK，完成配置
选择自定义的规则，点击Set as Default，设置为默认规则
使用checkstyle
右击需要检查的文件，选择Checkstyle->Check Code with Checkstyle
执行完成后，有问题的地方，文件的左侧会出现一个放大镜标记
鼠标停留在上面，会有tips，例如下面的这行代码缺少{}
具体的checkstyle错误信息如何修改可以参考http://blog.csdn.net/jzy23682891/article/details/7057978
来源：oschina
链接：https://my.oschina.net/u/1858823/blog/552964