Answer to Question #289063 in Java | JSP | JSF for angge

Question

The colors red, blue, and yellow are known as the primary colors because they cannot be made by mixing other colors. When you mix two primary colors, you get a secondary color:  When you mix red and blue, you get purple.  When you mix red and yellow, you get orange.  When you mix blue and yellow, you get green. Design a program that prompts the user to enter the names of two primary colors, one at a time. If the user enters anything other than "red," "blue," or "yellow," the program should print "You didn't input two primary colors." Otherwise, it should print something in the format: "When you mix red and blue, you get purple." (Assuming the user entered "red" and "blue”.)

Answer 1

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("Enter the names of two primary colors.");
        String[] primaryColors = {"red", "blue", "yellow"};
        String[][] colors = {
                {"red", "purple", "orange"},
                {"purple", "blue", "green"},
                {"orange", "green", "yellow"}};
        System.out.println("First:");
        String a = in.nextLine();
        System.out.println("Second:");
        String b = in.nextLine();
        int aI = -1;
        int bI = -1;
        for (int i = 0; i < primaryColors.length; i++) {
            if (a.equals(primaryColors[i])) {
                aI = i;
            }
            if (b.equals(primaryColors[i])) {
                bI = i;
            }
        }
        if (aI >= 0 && bI >= 0) {
            System.out.println("When you mix " + primaryColors[aI] + " and " + primaryColors[bI] + ", you get " + colors[aI][bI] + ".");
        } else {
            System.out.println("You didn't input two primary colors.");
        }
    }
}