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Write a SIMPLE Java Program, with 2-3 classes. With Good Commenting to understand. MUST Use a seperate Thread for each square in your Grid.

Write a Java program to implement the Game of Life, as defined by John Conway:

Any live cell with fewer than two live neighbors dies, as if caused by under-population.

Any live cell with two or three live neighbors lives on to the next generation.

Any live cell with more than three live neighbors dies, as if by overpopulation.

Any dead cell with exactly three live neighbors becomes a live cell, as if by reproduction.

Your program should use a 20 x 20 grid, and accept the initial grid configuration from a text file named "startinggrid.txt", in a form similar to the following (this example would be for a 4 x 4 grid):

OOOO

OXXO

OXXO

OOOO

Where X indicates and inhabited square and O indicates an empty square. The last line of the text file (the 21st line) will contain a single integer, indicating the number of generations to compute, and show the final configuration in the same format as the input.