a port of the Processing Visualization Language


DrawDot dd1 = new DrawDot(50, 80);

void setup() { 

  size(200, 200);



void draw() {




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.
Usage Web & Application
Related class

This reference is licensed under the CC BY-NC-SA 2.0 license:

Creative Commons License
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