Connect Four Java Game:

Connect Four is a two-player game in which the players first choose a color, and then take turns dropping colored discs from the top into a seven-column, six-row vertically suspended grid. The pieces fall straight down, occupying the next available space within the column. The objective is to be the first one to form a horizontal, vertical or diagonal line of four of ones own discs.

Write a simple console based program to simulate the Connect four Game where the user enters his/her choice and takes turns to play with the computer.