Java Language and StdDraw method

In this lab we're going to create some abstract art. We're going to paint a digital turtle, and give him instructions for how to walk across the screen. The turtle starts at a position on the screen facing a given direction. As long as the turtle is on the screen, he leaves a footprint( draws a circle) at his current position, then walks in that direction. Sometimes he changes his direction. Write a program called Turtle that draw's the turtle's footprints using StdDraw. To start with, make the turtle zig zag by changing the y part of his direction to flip up/down every 5 steps. Your turtle should do something like the following