Using arrays, please write a Java program that simulates assigning seats in a train based on the following seating pattern:

$1,A,B,C,D$

$2,A,B,C,D$

$3,A,B,C,D$

$4,A,B,C,D$

$5,A,B,C,D$

The program should display the initial seat pattern, with an $\text{'}x\text{'}$ marking the seats already assigned. For example, after seats $1A,2B,$ and $4C$ are taken, the display should look like this:

$1,x,B,C,D$

$2,A,x,C,D$

$3,A,B,C,D$

$4,A,B,x,D$

$5,A,B,C,D$

After displaying the seats available, the program should prompt the user to enter the desired seat in the format "row column" $($e$.$g$.,"1$A$"$ or $"3$C$").$ If the seat is available, the program should assign it and update the display. If the seat is already assigned, the program should display a message indicating that the seat is occupied and ask for another choice.

The program should continue prompting for seat