PHW7: Tree

In class we saw how to compose objects to create a BoxCar class. Now we’re going to create another composite shape: Tree.

Rx: <25 min Av: 25-50 min Sd: 50-75 min DNF: 75+ min

Instructions

1. If you haven’t been following along in class, download the Picture Project and import it into your workspace.
2. Create a new Tree class with:
   • 2 fields: a Triangle for the top & a Rectangle for the trunk
   • 3 constructors:
     • Default constructor (no parameters)
     • Constructor with 4 parameters: x, y, width, & height
     • Constructor with 6 parameters: x, y, width, height, topColor, trunkColor
   • a setter for topColor & trunkColor
   • a setBounds method that:
     • Has 4 parameters: x, y, width, & height
     • The tree starts at x, y and extends to width & height
     • The top is 3/4 height of the tree & the full width
     • The trunk is 1/4 height of the tree & 1/5 the width
   • a paint method that takes a Graphics parameter and calls the draw methods of the 2 fields
3. Test your new Tree class by adding 3 to the Picture class. Make sure to use different constructors, and change the size of the Tree using setBounds to verify that it works correctly for any size tree.