why is there exception while using enhanced for loop for traversing the array in the following code?

There was a problem with the name of the array which was being used. Now run this and see the output:

package com.programming.module7;

public class ArrayExample {
	public static void main(String[] args) {
		// declared and instantiated(length) - index based/bitwise structure
		int[] intArr = new int[10];

		// initialization
		intArr[0] = 12;
		intArr[4] = 45;
		intArr[8] = 3;
		intArr[5] = 23;
		intArr[5] = 55;

		// declared,instantiated,initialized-array structured
		int[] intArr2 = {3, 7, 9, 9, 8, 7, 6, 5, 8};
		// traversal
		// 0...length-1
		for (int i = 0; i < intArr.length; i++) {
			System.out.println("First Array elements - intArr - using basic for loop - " + intArr[i]);
		}
		
		System.out.println();
		
		for (int i = 0; i < intArr2.length; i++) {
			System.out.println(
					"Second Array element - intArr2 - using basic for loop are " + intArr2[i]);
		}
		System.out.println();
		for (int i : intArr) {
			System.out.println(
					"First Array elements of intArr using enhanced for loop are "
							+ i);

		}
	}
}

yeah it worked...but now...for enhanced for loop...is this a kind of syntax to be always followed for traversing an array?...I mean just using "i" instead of intArr[i]?