Reference for Processing (BETA) version 0135+. If you have a previous version, use the reference included with your software. If you see any errors or have any comments, let us know.

Name

extends

Examples
DrawDot dd1 = new DrawDot(50, 80);

void setup() { 
  size(200, 200);
} 
 
void draw() {
  dd1.display();
} 
 
class Dot { 
  int xpos, ypos;
} 

class DrawDot extends Dot {
  DrawDot(int x, int y) {
    xpos = x;
    ypos = y;
  }
  void display() {
    ellipse(xpos, ypos, 200, 200);
  }
}
Description Allows a new class to inherit the methods and fields (data members) from an existing class. In code, state the name of the new class, followed by the keyword extends and the name of the base class. The concept of inheritance is one of the fundamental principles of object oriented programming.
Syntax
extends
Parameters
Usage Web & Application
Related class
super
Updated on February 09, 2008 04:38:52pm PST

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