peterreilly 2004/06/28 10:00:48
Modified: docs faq.html
Log:
add NoClassDefFoundError to faq.xml
Revision Changes Path
1.102 +32 -0 ant/docs/faq.html
Index: faq.html
===================================================================
RCS file: /home/cvs/ant/docs/faq.html,v
retrieving revision 1.101
retrieving revision 1.102
diff -u -r1.101 -r1.102
--- faq.html 25 Jun 2004 13:42:08 -0000 1.101
+++ faq.html 28 Jun 2004 17:00:48 -0000 1.102
@@ -283,6 +283,12 @@
<code>web-inf</code> or JAR files with a lower-case
<code>meta-inf</code> directory.
</a></li>
+ <li><a href="#NoClassDefFoundError">
+ I installed Ant 1.6.x and now get
+ <code>Exception in thread "main" java.lang.NoClassDefFoundError:
+ org/apache/tools/ant/launch/Launcher</code>
+
+ </a></li>
</ul>
<h4 class="toc">Ant and IDEs/Editors</h4>
<ul>
@@ -1093,6 +1099,32 @@
configuration. In the Options/Configuration menu, in the View tab,
General
section, check the "Allow all upper case files names" box. The
META-INF and
WEB-INF will look correct.</p>
+ <p class="faq">
+ <a name="NoClassDefFoundError"></a>
+ I installed Ant 1.6.x and now get
+ <code>Exception in thread "main" java.lang.NoClassDefFoundError:
+ org/apache/tools/ant/launch/Launcher</code>
+
+ </p>
+ <p>
+ The cause of this is that there is an old version of ant somewhere
in the
+ class path or configuration.
+ </p>
+ <p>
+ A version of this problem may be seen on some linux systems.
+ Some linux systems (Fedora Core 2 for example), comes with a
version
+ of ant pre-installed. There is a configuration file called
+ <code>/etc/ant.conf</code> which if present, the ant shell
+ script will 'dot' include. On Fedora Core 2, the /etc/ant.conf
+ file resets the <code>ANT_HOME</code> environment variable to
+ <code>/usr/share/ant</code>. This causes the problem that
+ an old version of ant (1.5.x in this cause) will be used
+ with a new version of the ant script file.
+ </p>
+ <p>
+ One can check if this is the case by doing
+ <code>ant --noconfig -version</code>.
+ </p>
<p class="faq">
<a name="integration"></a>
Is Ant supported by my IDE/Editor?
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