I have to create a source code in JAVA for scoring in the game Yahtzee

I have no idea where to start

It has to have a switch statement and if-else statements

here is what I have so far

public class Yahtzee { // constants that specify categories on the scoresheet public static final int ONES = 1; public static final int TWOS = 2; public static final int THREES = 3; public static final int FOURS = 4; public static final int FIVES = 5; public static final int SIXES = 6; public static final int THREE_OF_A_KIND = 9; public static final int FOUR_OF_A_KIND = 10; public static final int FULL_HOUSE = 11; public static final int SMALL_STRAIGHT = 12; public static final int LARGE_STRAIGHT = 13; public static final int YAHTZEE = 14; public static final int CHANCE = 15; /** * Calculates the score for a given turn. * * @param category selected by the player * @param dice current values of the dice * @return number of points, or 0 if N/A */ public static int calculateScore(int category, Dice dice) { int die1; int die2; int die3; int die4; int die5; die1 = (int)(Math.random() * 6) + 1; die2 = (int)(Math.random() * 6) + 1; die3 = (int)(Math.random() * 6) + 1; die4 = (int)(Math.random() * 6) + 1; die5 = (int)(Math.random() * 6) + 1; int score; score = 0; switch(score) { case ONES: break; case TWOS: break; case THREES: break; case FOURS: break; case FIVES: break; case SIXES: break; case THREE_OF_A_KIND: break; case FOUR_OF_A_KIND: break; case FULL_HOUSE: break; case SMALL_STRAIGHT: break; case LARGE_STRAIGHT: break; case YAHTZEE: break; case CHANCE: break; return score; } } public static int oneValue(int value, Dice dice) { return 0; } public static int threeOfAKind(Dice dice) { return 0; } public static int fourOfAKind(Dice dice) { return 0; } public static int fullHouse(Dice dice) { return 0; } public static int smallStraight(Dice dice) { return 0; } public static int largeStraight(Dice dice) { return 0; } public static int yahtzee(Dice dice) { return 0; } public static int chance(Dice dice) { return 0; } }