Add Checkstyle rule for checking trailing whitespace
diff --git a/src/conf/checkstyle.xml b/src/conf/checkstyle.xml
index 7b46920..fc2c599 100644
--- a/src/conf/checkstyle.xml
+++ b/src/conf/checkstyle.xml
@@ -155,11 +155,16 @@
<!-- config_loc is used by Eclipse plugin -->
<property name="file" value="${config_loc}/checkstyle-suppressions.xml" />
</module>
- <!-- @author tags are deprecated -->
<module name="RegexpSingleline">
+ <!-- @author tags are deprecated -->
<property name="format" value="^\s+\*\s+@author\s" />
<property name="message" value="Deprecated @author tag" />
<property name="fileExtensions" value="java" />
<property name="severity" value="warning" />
</module>
+ <module name="RegexpSingleline">
+ <!-- \s matches whitespace character, $ matches end of line. -->
+ <property name="format" value="\s+$" />
+ <property name="message" value="Line has trailing spaces." />
+ </module>
</module>
