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jar and URLClassloader problem

Erwin DES

Joined: Feb 26, 2003
Posts: 18
I have created a program that makes a copy of my program-files (in a folder) from a floppy disk (or CD) to a place on the C-drive.
Then I wanted to start a jar-file to launch my program. The call to this jar-file is functioning only when I execute it directly, but not automatically when calling it in the code after the copy-proces.
I have already figured out that it have to use URLClassloader or something but my code below does not work...
public static Object createObject(String name, String path) throws Exception {
URL classPath = new URL(path);
URLClassLoader classLoader = new URLClassLoader(new URL[]
Class clazz = classLoader.loadClass(name);
return clazz.newInstance();
Can anyone give me a solution to this problem?
Michael Morris
Ranch Hand

Joined: Jan 30, 2002
Posts: 3451

... but not automatically when calling it in the code after the copy-proces.

Could you explain what you mean here? Why do you need to call it twice?

Any intelligent fool can make things bigger, more complex, and more violent. It takes a touch of genius - and a lot of courage - to move in the opposite direction. - Ernst F. Schumacher
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subject: jar and URLClassloader problem
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