ANT | Trying to override old definition of task javac Error

ant, xml

Solution

lets try this

<presetdef name="my.javac">
            <javac includeantruntime="false" />
    </presetdef>


    <target name="compile" depends="init">
        <my.javac srcdir="src" destdir="build/classes"/>
    </target>

Problem

i am trying to build a jar in ANT.Below is my code for generating jar file.i dont know why this error("Trying to override old definition of task javac") happens.sometimes its not generating jar. ``` <?xml version="1.0" ?> <project name="HelloWorld" default="compress"> <presetdef name="javac"> <javac includeantruntime="false" /> </presetdef> <target name="init"> <mkdir dir="build/classes" /> <mkdir dir="dist" /> </target> <target name="compile" depends="init"> <javac srcdir="src" destdir="build/classes"/> </target> <target name="compress" depends="compile"> <jar destfile="dist/sample.jar" basedir="build/classes" /> </target> <target name="execute" depends="compile"> <java classname="src" classpath="build/classes" /> </target> <target name="clean"> </target> </project> ``` The output is as follows: ``` Buildfile: E:\GAD project\project\GAD\build.xml Trying to override old definition of task javac init: [mkdir] Created dir: E:\GAD project\project\GAD\dist compile: compress: [jar] Building jar: E:\GAD project\project\GAD\dist\sample.jar BUILD SUCCESSFUL Total time: 1 second ``` Let me know how can i rectify the error msg.?

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