Where can find ant.jar ?

[Question continues: I download jakarta-ant.tar.gz and jakarta-tomcat.tar.gz source from apache site to install Tomcat server, but the jakarta-ant.tar.gz doesn't include ant.jar ,so I can not compile the jakarta-ant first.]

It's definitely in jakarta-ant.zip but it's also bundled with distributions of the Cocoon project and the Element Construction Set (and probably several other Apache projects).

[Also, you should be able to build jakarta-ant once you download the source distribution. There are straightforward instructions in the README. This entails using a bootstrap script to build a minimal version of ant, then using that bootstrap version to build the real thing. Perhaps someone can provide specific instructions in a feedback... The bundled versions mentioned above are not guaranteed to be up-to-date. -Alex]