I have a Java applet which is embedded in a html page. This applet receives a Processing code string - just the methods like setup, draw ... as plain string. The code is written by people using the webpage not by myself.

Is there a way to evaluate Processing Code in runtime without compiling like an interpreter?

I have tried using ToolProvider.getSystemJavaCompiler(); to compile the code from string yet. This might work on my local machine but maybe not in an applet inside a webpage.

Thank you very much Philho,

BeanShell sounds good - I already have a BeanShell Interpreter inside my applet and this works well. I only have one big problem with the methodes of the PApplet instance.

I do the following:

frame = new JFrame( "My Frame" );
frame.setLocation(200, 200);
frame.setSize(300, 300);
applet = new PApplet();
frame.add(applet);
frame.visible = true;

This works and I get a frame with a PApplet I guess (at least I dont get any errors after importing core.jar).

I would need something like "applet.setup = mysetup" or something similar. I cannot create a dynamic class because I use BeanShell inside an applet not allowing Reflection and so no dynamic classes - just objects.

I look deeper into the JS version now - maybe this will work better.