[code:3uu8p2ax]!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="com.mavenone">
<listeners>
<listener class-name="testng_listeners.CustomListener" />
</listeners>
<test name="AppTest">
<classes>
<class name="com.mavenone.AppTest" ></class>
</classes>
</test>
<test name="Sampletest">
<classes>
<class name="com.mavenone.sampletest" ></class>
</classes>
</test>
</suite>
[/code:3uu8p2ax]
add the test name and classes in above testng.xml that you want to execute.