Setting classpath at runtime?

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L Clarke - 16 Feb 2006 20:11 GMT

Hi,

I want to set the classpath at runtime, is there a method that aloows
setting/altering (or adding to) the classpath variable at runtime from code?

thanks in advance
lee

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Oliver Wong - 16 Feb 2006 20:44 GMT

> Hi,
>
[quoted text clipped - 4 lines]
> thanks in advance
> lee

You could try System.setProperties(); but it sounds like your question
is too low-level (see
http://www.catb.org/~esr/faqs/smart-questions.html#goal) If your goal is to
change where the JVM searches for loading classes, you may be better off
writing a custom class loader.

- Oliver

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Thomas Kellerer - 16 Feb 2006 22:30 GMT

L Clarke wrote on 16.02.2006 21:11:

> Hi,
>
[quoted text clipped - 3 lines]
> thanks in advance
> lee

You will need to use your own classloader. Have a look at URLClassLoader which
will probably do what you want to (load classes from jar files not present in
the classpath at JVM startup I assume)

Thomas

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Roedy Green - 17 Feb 2006 05:08 GMT

>I want to set the classpath at runtime, is there a method that aloows
>setting/altering (or adding to) the classpath variable at runtime from code?

see http://mindprod.com/jgloss/classloader.html