Question

I am writing a build file for its basic run, clean and compile properties. Here is what I have:

<?xml version="1.0" encoding="ISO-8859-1"?>

<project default="compile">
   <description>
      Compile and run the Java files for Lab7
   </description>

   <target name="prob1" depends='compile'>
      <java classname='prob1'>
         <classpath path='./'/>
         <arg value='Gertrude'/>
         <arg value='Justin'/>
      </java>
   </target>

   <target name="prob2" depends='compile'>
      <java classname='prob2'>
         <classpath path='./'/>
         <arg value='28'/>
      </java>
   </target>

   <target name="prob3" depends='compile'>
      <java classname='prob3'>
         <classpath path='./'/>
         <arg value='2000'/>
      </java>
   </target>

   <target name="prob4" depends='compile'>
      <java classname='prob4'>
         <classpath path='./'/>
         <arg value='2'/>
      </java>
   </target>

  <target name="compile">
    <javac srcdir='./' includeantruntime="false"/>
  </target>

  <target name="clean">
    <delete>
        <fileset dir="./">
            <include name='*.class'/>
        </fileset>
    </delete>
  </target>
</project>

I am trying to run each prob with different arguments one at a time. Like in prob1 i want to run it with the first name then again with the second name, how do I do this?

Answer 1

Yes something like that is possible using antlib, which offers a wide range of functionalities like for loops, if conditions and macros. You can define a macro like

<macrodef name="call-cc">
   <attribute name="target"/>
   <attribute name="param1">
   <attribute name="param2">
   <element name="yourtask">
      <java classname='$name'>
        <classpath path='./'/>
        <arg value='@{param1}'/>
        <arg value='@{param2}'/>
      </java>
   </element>

</macrodef>

and then you can call it like this

<call-cc target="unittests" param1="bla" param2="blabla"/>

You can read about antlib in the manual