Re: How to write an build script so that the jar get updated ONLY whe n its .class is compiled (i.e. the java get changed)

[Stefan Bodewig <bo...@apache.org>]

On Wed, 21 Apr 2004, Andrew Wong <An...@adidas.com.hk> wrote:

> Hi, How to write an build script so that the jar get updated ONLY
> when its .class is compiled (i.e. the java get changed) I can't do
> it with uptodate tag

You don't do anything special at all.

<javac> doesn't do anything if your .class files are more recent than
your .java files.

<jar> doesn't do anything if the jar file content is more recent than
what you'd want to add.

So all you do is simply use <javac> and <jar> and let the tasks take
care of the rest.

Stefan

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