import processing.core.*;

public class MyPApplet extends PApplet {
  
}


@@ -1,74 +1,378 @@
-import processing.core.*;%0A%0Apublic class MyPApplet extends PApplet %7B%0A  %0A%7D%0A
+// Import processing PApplet and Processing image (i.e. Processing core)%0Aimport processing.core.*;%0A%0A// All PApplet GUI files will contain this file structure%0Apublic class MyPApplet extends PApplet %7B%0A  public void setup() %7B%0A    // setup code here%0A    // This code will only work once%0A  %7D%0A  public void draw() %7B%0A    // draw code here%0A    // This code will execute in a loop%0A  %7D%0A%7D
 %0A

Revise MyPApplet file