How tom create a NEW class online

[Alexander]

Here is my problem:
I need to create a NEW class online, during code execution. A class
with members only (no methods), but one that inherits base class or
implements empty interface.
There is no neither *.class file nor *.java (text) file.
This is a part of my thesis, so work around is not an option (at
least not to create text file with java code and compile). I thought
that a reflection can help me, but nothing helpfull was found.
How can I do this? (or at least if this is impossible – tell me )

Thanks

 

[Tor Iver Wilhelmsen]

This is a part of my thesis, so work around is not an option (at
least not to create text file with java code and compile). I thought
that a reflection can help me, but nothing helpfull was found.

Reflection is for analysing and using existing classes. You want to
synthesize a class, there are tools/APIs for that, though I cannot
remember any at the moment.

 

[Eric Sosman]

Here is my problem:
I need to create a NEW class online, during code execution. A class
with members only (no methods), but one that inherits base class or
implements empty interface.
There is no neither *.class file nor *.java (text) file.
This is a part of my thesis, so work around is not an option (at
least not to create text file with java code and compile). I thought
that a reflection can help me, but nothing helpfull was found.
How can I do this? (or at least if this is impossible – tell me )

The defineClass() methods of java.lang.ClassLoader
may be what you want.

 

[Thomas Weidenfeller]

Reflection is for analysing and using existing classes. You want to
synthesize a class, there are tools/APIs for that, though I cannot
remember any at the moment.

http://jakarta.apache.org/bcel/

/Thomas

 

[Alexander]

I think this is the one , thank you very much!
If someone knows something else , please inform me!

 

[Andrew Thompson]

I need to create a NEW class online,

This part is easy enough, upload the tools.jar
and hook directly into it as I do for the JOLC.
<http://www.physci.org/javac.jsp>

You could write the .java file to the server, invoke
the compiler on it to produce a class, then
Class.forName() it.

HTH