Looping through an Array

Change the code below so that in the printNames() method a loop is used to print out the array of names rather than the serial listing.

class ArrayTest {

    String[] firstNames = { "Dennis", "Grace", "Bjarne", "James" };
    String[] lastNames = new String[firstNames.length];

    void printNames() {
        int i = 0;
        System.out.println(firstNames[i]
            + " " + lastNames[i]);
        i++;
        System.out.println(firstNames[i]
            + " " + lastNames[i]);
        i++;
        System.out.println(firstNames[i]
            + " " + lastNames[i]);
        i++;
        System.out.println(firstNames[i]
            + " " + lastNames[i]);
    }

    public static void main (String arguments[]) {
        ArrayTest a = new ArrayTest();
        a.printNames();
        System.out.println("-----");
        a.lastNames[0] = "Ritchie";
        a.lastNames[1] = "Hopper";
        a.lastNames[2] = "Stroustrup";
        a.lastNames[3] = "Gosling";
        a.printNames();
    }
}

Partial Solution