I have a simple project whose build.xml looks like this:

<?xml version="1.0"?>
<project name="Code Abbey Solutions" default="build">
  <property name = "src" value = "."/>
 
  <target name="build">
    <javac destdir="${src}">
      <src path = "${src}"/>
    </javac>
  </target>
</project>

Now when I ran Ant, one file Common.java compiled but the other, Solution001.java didn't. Why would that happen?