Issue with for each loop and arrays

Question

I am getting java.lang.ArrayIndexOutOfBoundsException: 5 when running this program.

public class TestArray {
    public static void main(String[] args) {
            int[] someArray = new int[5];

            someArray[0] = 5;
            someArray[1] = 10;
            someArray[2] = 15;
            someArray[3] = 20;
            someArray[4] = 25;

            System.out.println("Array length = " + someArray.length);
            for (int i : someArray) {
                    System.out.println("Element at index " + i + ": " + someArray[i]);
            }
    }

}

Shouldn't the loop exit when i is greater than or equal to the length of the array which would be 5 in this case?

`Arrays.asList(someArray).forEach(i -> System.out.println(i));` — Andrew Tobilko, Jun 25 '15 at 18:52

score 5 · Accepted Answer · answered Jun 25 '15 at 18:44

5

You are iterating over array values itself not the indexes. Use just i not someArray[i]

Or change your loop to

for (int i=0; i<someArray.length; i++)

Changing loop is better in this case based upon what you are trying to achieve there

answered Jun 25 '15 at 18:44

Raman Shrivastava

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Issue with for each loop and arrays

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