Here is a sample Java program that calculates the minimum number of carpet squares needed to cover a room with a given width and length:
This program prompts the user to enter the width and length of the room in feet, and then calculates the minimum number of carpet squares needed to cover the floor. It does this by dividing the width and length of the room by the width and length of the carpet squares, and then rounding up to the nearest whole number. Finally, it prints the result to the console.
Note: In this program, the carpet squares are assumed to have a fixed width and length, which are represented by the variables carpetWidth and carpetLength. You will need to set these values to the appropriate dimensions for your carpet squares.