Spring Semester 2005

Here's some code we will discuss:

class Point {
  double x, y;
  Point(double x, double y) {
    this.x = x; 
    this.y = y;
  }
  public String toString() {
    return "I am a Point at (" + x + ", " + y + ")"; 
  }
} 

class Circle {
  private double radius, x, y; 
  Circle(double r, double x, double y) {
    radius = r; 
    this.x = x; 
    this.y = y; 
  }
  Point center() {
    return new Point(this.x, this.y); 
  }
  double radius() {
    return radius; 
  }
} 

class Rectangle {
  double x, y, width, height; 
  Rectangle(double x, double y, double width, double height) {
    this.x = x; 
    this.y = y;
    this.width = width;
    this.height = height; 
  }
} 

There's also an older lab that illustrates the process in greater detail.

Now the rest of the notes (below) simply illustrates how we will use our visualization tool.

Start BlueJ.