Hi, I have found many guide about calling processing function from eclipse but nothing about call java files (*.java) from the pde files.
Is it necessary to put the java files into the library folder? Do I have to make class or jar files or can I direcltly use the .java? How to include them?

For example if I have a main pde file and from the "new tab" I add a Include.java file with these codes it does not work
mainPde:

1. 
   public class User extends Include {
       System.out.println(Include.MyLongString);
   }
   
   void setup() {
     size(600, 600);
     background(255);
   }
   
   
   
   void draw() {
   }
   
   
   

Include.java

1. public class Include {
       public static String MyLongString= "abcdef";
   }
   
   

What's wrong?
Thanks