[Solved] Java (beginner): creating a menu that displays features of a calculator


You can use Scanner class.

For example:

java.util.Scanner in = new java.util.Scanner(System.in);
String input = in.nextLine();
switch (input.toLowerCase()) {
    case "a":
        System.out.println("Option \"a\" selected;");
        break;
    case "b":
        System.out.println("Option \"b\" selected;");
        break;

solved Java (beginner): creating a menu that displays features of a calculator