Another option is to add a routine like this to the init target -
<!-- check for java version and fail build if not the correct version -->
<echo message="Java Version: ${java.version}"/>
<echo message="Java home: ${java.home}"/>
<fail message="Unsupported Java version: ${java.version}. Make sure that
the version of the Java compiler is 1.5 (5.0) or greater.">
<condition>
<not>
<or>
<contains string="${java.version}" substring="1.5"
casesensitive="false" />
<contains string="${java.version}" substring="1.6"
casesensitive="false" />
</or>
</not>
</condition>
</fail>
-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Tuesday, July 27, 2010 9:11 AM
To: [email protected]
Subject: AW: How to check if available java version is higher equal than a
required java version?
Check for Classes which are new in that specific JDK.
<available property="jdk1.5+" classname="java.net.Proxy"/>
<available property="jdk1.6+" classname="java.util.ServiceLoader"/>
<fail message="Require JDK 1.5 or higher" unless="jdk1.5+"/>
Jan
>-----Ursprüngliche Nachricht-----
>Von: Ben Stover [mailto:[email protected]]
>Gesendet: Dienstag, 27. Juli 2010 14:35
>An: Ant Users
>Betreff: How to check if available java version is higher
>equal than a required java version?
>
>Assume I have a build.xml which contains some java tasks
>(javac, jar,...)
>
>I would like to make sure that the Java installation which is
>used to compile the source code is higher equal
>than e.g. JAVA SE 1.5.03.
>
>How can I specify this version requirement (and an appropriate
>error message) in a build.xml script?
>
>Ben
>
>
>
>
>
>
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