test/testng-single2.xml

<!DOCTYPE suite SYSTEM "http://beust.com/testng/testng-1.0.dtd" >
  
<suite name="Single" verbose="3" parallel="false"  >
  
  <test name="JUnit" junit="true">
    <classes>
      <class name="test.sample.JUnitSample1" />
      <class name="test.sample.JUnitSample2" />
      <!-- <class name="test.sample.AllJUnitTests" /> -->
      <class name="test.sample.JUnitSample3" />
    </classes>
  </test>


</suite>