Design Improvements in existing Java project with explanation

You are given the source code for a console-version of the Heptalion game. It has the slight modification that a player loses if they either choose to quit or if they fail to make a legal move 3 times in a row. Your job is to revise the program to improve its design. As an example, editing the program so it tests for the end of the game by searching to see if a player has a valid move would not by itself count as a design improvement. You should make 5 improvements. You can use each idea once – for example, you could support better error checking, but just do this for one part of the code, like one menu. Deadline 6th Dec