Re: java.lang.ClassLoader

[Per Bothner <per at bothner dot com>]

"Veena Murthy" <vmurthy@nortelnetworks.com> writes:

> Can anyone point me to code examples for using java.lang.ClassLoader.

Kawa (http://www.gnu.org/software/kawa/) uses ClassLoader twice:

* gnu.bytecode.ZipLoader manages a .zip (or .jar) archive, and
loades classes as needed from the the archive.  This is used when
Kawa compiles a Scheme source files into a "compiled form" consisting
of a set of classes grouped in a .zip file.

* gnu.bytecode.ArrayClassLoader manages a bunch of classes in raw
byte[] format.  When Kawa is running interactively, source code
is compiled into a collection of gnu.bytecode.ClassType objects,
one for each generates class.  Then the writeToArry method is
called on each ClassType, giving a byte[][], one byte[] for
each class.  The byte[][] is uses to construct a ArrayClassLoader.
When the compiled code is executed, it loaded the newly-compiled
classes form the ArrayClassLoader.

Avarious people are using the Kawa compilation framework
(gnu.bytecode and gnu.expr) is to compile various languages to
Java bytecodes.  I am using it for Scheme and Emacs Lisp;  there
is also a never-got-very-far implementation of EcmaScript/JavaScript.
-- 
	--Per Bothner
per@bothner.com   http://www.bothner.com/~per/