Problem with ANT compiling but not doing jar

[Abiram Radhakrishnan]

Hi,
Subject: Compiling & doing jar
Operating System:Windows NT
Iam using ant v 1.4.1 & I have done compilation succesfully but when I do
the jar of the compiled source I get the following Error
ant -buildfile compilejar.xml
Buildfile: compilejar.xml
compile:
jar:
BUILD FAILED
C:\Ant\jakarta-ant-1.4.1\bin\compilejar.xml:25: The <jar> task doesn't
support the "destfile" attribut
Total time: 1 second
Note: My classpath & ANT_HOME dont make any issue since Iam able to compile
& do other tasks
with the ant
All the Directory metioned in the xml file exsists

<?xml version="1.0" encoding="UTF-8"?>
<project name="Ant Demo" default="jar" basedir=".">
<!--Define Global properties. -->
<property environment="env"/>
<property name="buildDir" value="classes"/>
<property name="srcDir" value="src"/>
<property name="xalan" value="XML/xalan/xalan.jar"/>
<property name="xerces" value="XML/xalan/xerces.jar"/>
<property name="junit"
value="JUnit/junit3.7/junit.jar"/>

<path id="classpath">
<pathelement path="${buildDir}"/>
<pathelement path="${junit}"/>
<pathelement path="${xerces}"/>
<pathelement path="${xalan}"/>
</path>
<target name="compile" description="compiles source files">
<javac srcdir="${srcDir}" destdir="${buildDir}"
classpath="classpath"/>
</target>
<target name="jar" depends="compile"
description="To jar the Compiled Source" >
<jar basedir="${buildDir}"
destfile="${srcDir}/lib/demo.jar"/>
</target>
</project>

[Reid M. Pinchback]

I don't see anything wrong with the attribute; destfile is supposed to be the required attribute for the jar task. You didn't provide any kind of fileset or includes indication for the files to place in the jar; I think that is the most likely cause for the message.
If that doesn't do it, the only thing that comes to mind is that you've named the build task "jar". I doubt that is the problem, but it is the only other thing I can think of.

[Chandresh Patel]

Replace destfile with jarfile. There is no destfile option on the jar task. I am looking at the documentation of ant 1.4.1.
Chandresh

[Erik Hatcher]

destfile is actually a valid attribute for Ant 1.5. jarfile will still work too, of course. Many tasks are standardizing on the destfile attribute to make them easier to use.