public static void main(String[] args) throws IOException {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    System.out.println("Choose your password:");
    System.out.println("A. Thepasskey");
    System.out.println("B. 12345");
    System.out.println("C. 54321");
    String line = br.readLine();
    switch (line) {
        case "A"://if one type A as choice
            System.out.println("Thepasskey");
            break;
        case "B":
            System.out.println("12345");
            break;
        case "C":
            System.out.println("54321");
            break;
        default:
            System.out.println("error! Check your data");
            break;
    }
}