Please write comments on this program explaining what each method array and sentinel does/is. Thank you.

import java.util.Scanner;

public class Lab12

{

public static void main(String[] args) {

final int pSize = 10;

int[] sized = { -51, -1, 5, 21, 36, 58, 64, 128, 256, 512};

int[] sent = { 1, 3, 5, 7, 11, 13, 17, 0, 6, 8 };

System.out.print(" The sized array: ");

printSizedArray(sized, pSize);

System.out.print(" The same sized array reversed: ");

revArray(sized, pSize);

printSizedArray(sized, pSize);

System.out.print(" The sentinel terminated array: ");

printSentArray(sent, 0);

System.out.print(" The same sentinel terminated array doubled: ");

doubArray(sent);

printSentArray(sent, 0);

System.out.println("");

}

public static void printSizedArray(int[] arr, final int eSize) {

for (int i = 0; i < eSize; ++i)

System.out.print(arr[i] + " ");

System.out.println("");

}

public static void printSentArray(int[] arr, int sentVal) {

for (int i = 0; arr[i] != sentVal; ++i)

System.out.print(arr[i] + " ");

System.out.println("");

}

public static void revArray(int[] arr, final int eSize) {

for (int i = 0, j = eSize - 1; i <= eSize / 2; ++i, --j) {

int tmp = arr[i];

arr[i] = arr[j];

arr[j] = tmp;

}

}

public static void doubArray(int[] arr) {

for (int i = 0; arr[i] != 0; i++)

arr[i] = 2 * arr[i];

}

}