java.lang.NoClassDefFoundError - javac: target release 1.1 conflicts with default source release 1.5
If you get a java.lang.NoClassDefFoundError error with a java applet in MicroSoft's Internet Explorer IE,
but not in NetScape/Mozilla/Firefox it's most likely due version 1.5 of Java.
Compiling the applet with the target option will help, but it's a bit tricky in Java 1.5.
When I compiled my applet with
# javac -O -target 1.1 applet.java
it failed with
javac: target release 1.1 conflicts with default source release 1.5
So I removed the target, but that didn't work. This actually resulted in the java.lang.NoClassDefFoundError.
SOLUTION: Specifying -source 1.1 doesn't work too, but this seems to work:
# javac -O -target 1.1 -source 1.2 applet.java
This also prevents the "Applet Notinited" error e.g. with the Microsoft Internet Explorer JAVA plugin.
If you make a jar-file, don't forget to include the manifest.mf:
Manifest-Version: 1.0
Main-Class: applet
Created-By: 1.3(Sun Microsystems Inc.)
jar cvfm applet.jar manifest.mf applet.class
...and if the applet is located in i.e. captain.at/applet/ don't forget the codebase:
<applet code="applet.class" archive="applet.jar" width="500" height="700"
codebase="/applet/"></applet>
Last-Modified: Mon, 26 Jun 2006 15:57:20 GMT
