Ant脚本中**/*的含义

Question

In the following Ant script, what is the meaning of **/* ?

<fileset dir="${server.src}" casesensitive="yes">
<include name="**/*.java"/>    
</fileset>

Answer 1

** means any level of subdirectory

ie match a/x.java , a/b/y.java , a/b/c/z.java , etc.