Question

***Using Java

Using the switch/case construct, write a program that takes a character from the user and classifies it as a number (‘1’,’2’, ‘3’, …), a letter from the alphabet (‘A’, ‘a’, ‘B’, ‘b’, …, ‘Z’, ‘z’), an arithmetic operator (‘+’, ‘-‘, ‘/’, ‘*’, ‘%’), a comparison operator (‘<’, ‘>’, ‘=’), punctuation (‘!’, ‘?’, ‘,’, ‘,’, ‘:’, ‘;’), and all other characters as a Special Character, and informs the user of the same.

If the user entered the character A, the system should say: “You entered a letter!”

If the user entered the character (, the system should say: “You entered a special character!”

Answer 1

//CharacterClassifier.java
import java.util.Scanner;
public class CharacterClassifier {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        System.out.print("Enter a character: ");
        char ch = scanner.next().charAt(0);
        switch (ch){
            case '0':
            case '1':
            case '2':
            case '3':
            case '4':
            case '5':
            case '6':
            case '7':
            case '8':
            case '9':
                System.out.println("You entered a number!");
                break;
            case 'A':
            case 'B':
            case 'C':
            case 'D':
            case 'E':
            case 'F':
            case 'G':
            case 'H':
            case 'I':
            case 'J':
            case 'K':
            case 'L':
            case 'M':
            case 'N':
            case 'O':
            case 'P':
            case 'Q':
            case 'R':
            case 'S':
            case 'T':
            case 'U':
            case 'V':
            case 'W':
            case 'X':
            case 'Y':
            case 'Z':
            case 'a':
            case 'b':
            case 'c':
            case 'd':
            case 'e':
            case 'f':
            case 'g':
            case 'h':
            case 'i':
            case 'j':
            case 'k':
            case 'l':
            case 'm':
            case 'n':
            case 'o':
            case 'p':
            case 'q':
            case 'r':
            case 's':
            case 't':
            case 'u':
            case 'v':
            case 'w':
            case 'x':
            case 'y':
            case 'z':
                System.out.println("You entered a letter!");
                break;
            case '+':
            case '/':
            case '*':
            case '%':
                System.out.println("You entered an arithmetic operator!");
                break;
            case '<':
            case '>':
            case '=':
                System.out.println("You entered a comparison operator!");
                break;
            case '!':
            case '?':
            case ',':
            case ':':
            case ';':
                System.out.println("You entered a punctuation !");
                break;
            default:
                System.out.println("You entered a special character!");
        }
    }
}