Re: <javac> rebuilds even if source not changed

> Hello,
>
> When a class is in a package, the <javac> target
> always rebuilds it even if the source hasn't
> changed. Here's a test case:
>
> $ ant -version
> Apache Ant version 1.7.0 compiled on December 13 2006
>
> $ ls
> build.xml
> Welcome.java
>
> $ cat Welcome.java
> package My.Class;
> public class Welcome
> {
>    public static void main(String[] args)
>    {
>       System.out.println("Hello World!");
>    }
> }
>
> $ cat build.xml
> <?xml version="1.0"?>
> <project name="test" default="build" basedir=".">
>    <target name="build">
>       <mkdir dir="foo" />
>       <javac srcdir="." destdir="foo" />
>    </target>
> </project>
>
> $ ant
> Buildfile: build.xml
>
> build:
>     [mkdir] Created dir: /tmp/testcase/foo
>     [javac] Compiling 1 source file to /tmp/testcase/foo
>
> BUILD SUCCESSFUL
> Total time: 1 second
>
> Now I just run it again:
>
> $ ant
> Buildfile: build.xml
>
> build:
>     [javac] Compiling 1 source file to /tmp/testcase/foo
>
> BUILD SUCCESSFUL
> Total time: 0 seconds
>
> And it recompiles but the source file hasn't
> changed.
>
> My class is part of the My.Class package, so javac
> put it in: foo/My/Class:
>
> $ find
> .
> ./Welcome.java
> ./build.xml
> ./foo
> ./foo/My
> ./foo/My/Class
> ./foo/My/Class/Welcome.class