how to use if,equals in ANT Script

If you want to use Ant tags like <if>,<equals> then you should do the following:

1. Add ancontrib.jar in ANT_HOME/Lib/
2. <taskdef resource="net/sf/antcontrib/antlib.xml" classpathref="project.classpath" /> to init Target.
3. For high features-use -

<taskdef resource="net/sf/antcontrib/antcontrib.properties"/>