Lab 5 Post-Lab

Lab 5 Post-Lab Assignment: Drawing Random Hats

Due Friday, October 8, 2004

Write a RandomHat class that creates a graphical hat object (a top hat formed by a rectangle and a line for the brim) with random size, position, and color. The class should store the following information as instance variables:

height of the hat
width of the hat
x coord of upper left-hand corner
y coord of upper left-hand corner
color

Your RandomHat class should provide the following methods:

A parameterless constructor that generates random values for the height, x, y, and color. Make the height a random value from 75 up to 150 (but not including), x from 0 up to 550, y from 0 up to 300. Assign the width of the hat to be 75% of the height. To generate the color generate a random value (between 0 and 255, inclusive) for each color component (amount of red, amount of green, and amount of blue), then use the Color constructor with three parameters (as we did in Lab 3) to get a random color. You should declare local variables inside the constructor to store each of the color components then use those variables as parameters to the Color constructor.
NOTE: This constructor is different from the constructor in the balloon class. That constructor had 4 parameters specifying the height, position, and color of the balloon. In this case the constructor should have no parameters - initial values of the instance data are generated randomly rather than being passed in by the client program.
IMPORTANT: Your random number generator must be declared at the class level (not inside the constructor), and must be declared static. So its declaration and initialization should appear with the declarations of height, width, color, x, and y, and should look like this:
```
   private static Random generator = new Random();
```
A draw method that draws the hat at its x,y coordinate in its color. The hat should be drawn as a rectangle with a line for the brim. The brim should be 1.5 times the width of the hat (so the amount it sticks out on each side of the hat is one-quarter the width). Note that your draw method will need to take a Graphics object as a parameter.

When your RandomHat class compiles, write an applet DrawHats that uses your RandomHat class to create and draw 5 hats. Of course, you also need an html file so you can run the applet. In the html file make the applet width 600 and height 400.

Be sure your program is appropriately documented.

Hand-in:

Hard copy of your RandomHat class and your DrawHats applet.
Tar your post lab directory that contains all of your files (.java, .class, and .html) and email it to your instructor with cpsc120 post5 in the subject line.