Develop a little Java application based on AVL, Trees and BST

It is intended that they develop a library of classes, their methods and tests, that allow to manage several balanced trees with the name of the polygons and their number of sides as well as some functionalities. - [login to view URL] a)-Begin by building three balanced trees: one for units (1 ~ 9), one for tens (10 ~ 90) and one for hundreds (100 ~ 900) using the supplied files. b)-Based on the three previous trees, construct a method that returns the name of a given polygon. its number of sides. For example, 524 is pentahecta-icosi-tetra-gon-> pentahectaicositetragon c)-Based on the three previous trees construct a balanced tree that contains all the names of regular polygons from 1 to 999 sides. d)Construct a method that returns the number of sides of a regular polygon by its name.