ant gets ClassNotFoundException

[Rick Coupland]

Binary package hint: ant

When executing a mapper task with type="regexp", ant gets a ClassNotFoundException attempting to load class
org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher. I am using Kubuntu 8.04 and and java 1.5.0.15 and ant version 1.7.0-3.
The follow error message is displayed by ant:

/b2/eldo/javalina/jv/build.xml:85: No supported regular expression matcher found: java.lang.ClassNotFoundException: org.apache.tools.ant.util.regexp.Jdk14RegexpMatcher

I downloaded built and installed the source package for ant and did not get the error. It seems to be only in the binary package.

The problem appears to be that RegexpMatcherFactory is attempting to return an instance of Jdk14RegexpMatcher even though
that class is not even in the jar file.

[RdeWit (rdewit)]

Hi Rick,

Couldn't it be that you did not install ant-optional? That package has a regexp matcher in it (ant-apache-regexp).

Cheers, Roald

[gasdia73 (gasdia73)]

yes, by installing ant-optional the error disappears.
Thanx!