Download the four files CableCar.java, MountainScene.java, SnowMan.java and Tree.java and include them in an Eclipse project $($as we did in class$).$ Run the program by clicking the Run button with the class MountainScene selected. You should get a window with a triangle and a rectangle in the lower left area $($this is the beginning of the drawing of a tree with ornaments$).$ Read through the code of MountainScene and Tree. You will see that when MountainScene is instantiated, a graphics window is created. Then a Tree object is created. As it is$,$ the draw method of the Tree class puts a rectangle and a triangle in the graphics window. Make sure that you understand how this is happening within the code.