Write a program that will be used in a robot that categorizes items by their color.

Question

Each color corresponds to a box with a specific number.
For simplicity, our program will handle 3 colors:
red goes to box #1
green goes to box #2
black goes to box #3

Your program needs to take a color as input and output the corresponding box number.

Sample Input
green

Sample Output
2
https://code.sololearn.com/c9B52Ml34dAf/?ref=app

Answer 1

You check for variable named red, greed, black exept string, so wrap it in quote as Jay Matthews said

Answer 2

Hello, welcome to sololearn Q&A.
To take most from community please tag language, and post your code attempt.

Answer 3

import java.util.Scanner;

public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String color = scanner.nextLine().trim().toLowerCase();

int boxNumber = categorizeColor(color);
System.out.println(boxNumber);
}

public static int categorizeColor(String color) {
switch(color) {
case "red":
return 1;
case "green":
return 2;
case "black":
return 3;
default:
return -1; // Invalid color
}
}
}
correct

Answer 4

This is correct.
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String color = scanner.nextLine().trim().toLowerCase();

int boxNumber = categorizeColor(color);
System.out.println(boxNumber);
}

public static int categorizeColor(String color) {
switch(color) {
case "red":
return 1;
case "green":
return 2;
case "black":
return 3;
default:
return -1; // Invalid color
}
}
}