[4711] in java-interest
retrieving custom classes at runtime
daemon@ATHENA.MIT.EDU (John D. Kane)
Thu Jan 11 13:14:49 1996
From: "John D. Kane" <john@insightnews.com>
To: "' java@java.sun.com'" <java@java.sun.com>,
"'java-interest@java.sun.com'" <java-interest@java.sun.com>,
"'jug@solect.com'" <jug@solect.com>
Date: Thu, 11 Jan 96 11:11:00 PST
__My Problem__
The problem I'm having occurs at runtime. I get the following error in
Netscape's Java console:
# Applet exception: exception: xclass.RemoteRetrieval
java.lang.ClassNotFoundException: xclass.RemoteRetrieval
at
netscape.applet.AppletClassLoader.findClass(AppletClassLoader.java:170)
at
netscape.applet.AppletClassLoader.loadClass(AppletClassLoader.java:121)
at
at
netscape.applet.EmbeddedAppletFrame.run(EmbeddedAppletFrame.java:281)
at java.lang.Thread.run(Thread.java:289)
RemoteRetrieval is my own class to quickly grab a remote file from the
server back to the client by encapsulating a lot of the URL and
URLConnection methods. From now own I'll refer to RemoteRetrieval as
myObject, just to make life easier.
__My directory structure__
I've created a directory off the root called \xjava\ to store all my own
java source and classes. \xjava\ has one subdirectory for the .java files
called xsrc\ and one subdirectory for the .class files called xclass\
__About the source and compiled objects I use:__
I've also included D:\xjava to my CLASSPATH environment variable. I compile
my source files by the syntax 'javac -d \xjava\ myObject.java'. In addition,
my source files include the 'package xclass;' statement to place the
compiled classes in their appropriate places.
My main applet is in another directory off the web site with the .htm
document in the same directory. I can easily include my own classes from
that \xjava\ directory. For example:
import xclass.myObject;
public class myApplet extends Applet implements Runnable {
myObject anObj = null;
... // all the methods ...
}
So I have assumed there is no problem with the CLASSPATH environment
variable, the directory structures and packages, or the code because my
applet (myApplet.java) compiles perfectly, bringing in my own classes from
the \xjava\xclass directory structure.
So why do I have this runtime error? I figure I can't play around with any
of the aforementioned issues because they all seem to be working correctly.
What more must I do so that my class will be found at runtime? I can't see
why this runtime thing is an issue because the class has already been
imported into my source.
John
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