what is the output of public class arrayOutput { public static void main (String args) { final int NUM_ELEMENTS = 4; int userVals = new int[NUM_ELEMENTS]; int i; userVals[0] = -1; userVals[1] = 4; userVals[2] = -6; userVals[3] = 7; for (i = 0; i < userVals.length; ++i) { if (userVals[i] < 0) { userVals[i] = -1 * userVals[i]; } System.out.println(userVals[i]); } } }