[3035] in java-interest
Re: Java eval?
daemon@ATHENA.MIT.EDU (David Forster)
Fri Oct 27 14:39:12 1995
Date: Fri, 27 Oct 1995 11:54:56 -0500
To: ser@jersey.uoregon.edu
From: mentor@io.org (David Forster)
Cc: java-interest@java.sun.com
At 17:31 10/26/95, ser@jersey.uoregon.edu wrote:
>Mario Ruggier asked:
>> Is it possible in Java to read a piece of Java code at runtime and
>> execute it, as in Lisp, Smalltalk and Perl ?
>
>Are you asking if you can load a piece of Java code *into* a Perl script and
>execute it? Or are you asking if you can cause a Java program to load in
>another piece of Java code and execute that?
No, I think he's asking if there's something like lisp's EVAL in Java,
i.e., can you do something like
(eval '(print "Hi there!"))
which just executes the PRINT form. [You'd think this is a pretty silly
thing to do, but it's the basis of the LISP Read-Eval-Print loop, which in
its simplest form is "(loop (print (eval (read))))" -- minus all sorts of
useful history-tracking stuff, of course.]
I don't think you can do this directly, but there's nothing to stop you
shipping code off to a server, compiling it there, and loading it back in.
Cheers,
David Forster <br><a href="http://www.io.org/~mentor">
Mentor Software Solutions </a><br>
+1 905 832 4837 <br>
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