I need to create a series of classes to be called into one file. I was just wondering how you go about actually making a class?

Do you make one in processing or outside in a java file?

Any help would be really grateful.

you can have .java files inside Processing, too. just make a new tab and give it a name ending in .java like: "MyFancyObject.java"

that way you push that file into the compiler seperated from all the pde files (which will all be concatenated into one file, then preprocessed into java and then passed to the compiler). inside your "seperate" .java files you can do just any "normal" java stuff. to have it interact with the pde(s), you will have to pass it the applet as parameter, like:

tab MyFancyObject.java
Code:

import processing.core.*;

public class MyFancyObject
{
    PApplet parent;
    MyFancyObject ( PApplet _p )
    {
        this.parent = _p;
    }
    public float getFrameRateFromParent()
    {
        return parent.frameRate;
    }
}
 

your sketch code
Code:

void setup ()
{
    MyFancyObject mfo = new MyFancyObject( this );
    println( mfo.getFrameRateFromParent() ); 
}
 

you can see what's happening behind the curtains if you export you sketch for web and than look into the generated "<yoursketchname>.java" file inside the applet folder ... i hope this was not too detailed.

F