samples/expenses/build.xml

<project name="expenses" default="build" basedir=".">
  <property name="sample.root" value="expenses" />
  <property name="sample.module" value="Expenses" />
  <property name="sample.path" value="src/main/java" />
  <import file="../common.ant.xml" />
  <!-- these are after the common.ant.xml so they have gwt.tools... -->
  <path id="sample.extraclasspath">
    <pathelement location="${gwt.tools.lib}/javax/validation/validation-api-1.0.0.GA.jar" />
    <pathelement location="${gwt.tools.lib}/javax/validation/validation-api-1.0.0.GA-sources.jar" />
  </path>
  <fileset id="sample.server.libs" dir="${gwt.tools.lib}">
    <include name="javax/validation/validation-api-1.0.0.GA-sources.jar" />
  </fileset>
</project>