Reference for Processing version 1.2. If you have a previous version, use the reference included with your software. If you see any errors or have suggestions, please let us know. If you prefer a more technical reference, visit the Processing Javadoc.



// This example is a code fragment, 
// it will not compile on its own.

// Create the DragDrop subclass from
// the Button class. Button becomes
// the superclass of DragDrop.
class DragDrop extends Button {
  int xoff, yoff;
  DragDrop(int x, int y) {
    // Runs the superclass' constructor
    super(x, y);
  void press(int mx, int my) {
    // Runs the superclass' press() method;  
    xoff = mx;
    yoff = my;  
Description Keyword used to reference the superclass of a subclass.
Usage Web & Application
Related class
Updated on June 14, 2010 12:05:29pm EDT

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