Exercise : Butterfly

Write a class Butterfly that extends the Critter class, along with its movement behavior. All unspecified aspects of Butterfly use the default behavior.

A Butterfly should be yellow in color. Its toString should alternate between being an x character and a - character each move.

A Butterfly flies upward in the following pattern: N, W, N, E, repeat.

Solve this program in jGRASP using the CritterMain simulator. Test it in Practice-it.