(Encrypt files) Encode the file by adding 5 to every byte in the file. Write a program that prompts the user to enter an input file name and an output file name and saves the encrypted version of the input file to the output file

/*********************************************************************************
* (Encrypt files) Encode the file by adding 5 to every byte in the file. Write a *
* program that prompts the user to enter an input file name and an output file   *
* name and saves the encrypted version of the input file to the output file.     *
*********************************************************************************/
import java.util.Scanner;
import java.io.*;

public class Exercise_17_14 {
	public static void main(String[] args) throws IOException {
		// Create a scanner
		Scanner input = new Scanner(System.in);

		// Prompt the user to enter an input file name and an output flie name
		System.out.print("Enter input flie name: ");
		String inFile = input.next();
		System.out.print("Enter output flie name: ");
		String outFile = input.next();

		try ( // Create two random access files
			RandomAccessFile source = new RandomAccessFile(inFile, "r");
			RandomAccessFile target = new RandomAccessFile(outFile, "rw");
		) {
			// Add 5 to every byte read from source file
			// then write it to the target file 
			int r = 0;
			source.seek(0); // Move the file pointer to the beginning
			while ((r = source.read()) != -1) {
				target.write(((byte)r) + 5);
			}
		}
		
	}
}