The document outlines requirements for a Java program that implements encryption and decryption of a text file using double transposition. It should allow users to choose between encrypting, decrypting, or closing the program, and it will read from and write to specified text files. The program will utilize fixed constants of 10 rows and 5 columns.

1. Java Programming Help
Write a program in Java that encrypts and decrypts a text file using double transposition. The
user should be given the option to encrypt, decrypt, or close the program. The program will read
from a text file and write to a text file.
The number of rows and columns are constants, with 10 rows and 5 columns.