Question

For my project I need to input a first and last name with no numbers but I simply can’t find anything online. If you could help, that would be terrific.

Also if you have the time, I need to flip the first and last name with a comma when the user inputs them.

    import java.io.BufferedReader;
    import java.io.InputStreamReader;
    import java.io.IOException;

    public class PhoneListr {

public static void main (String[] args) throws IOException {
    String firstName;
    String lastName;
    System.out.println ("Please enter your first name:");
    firstName = PhoneList ("");
    System.out.println ("Please enter your last name:");
    lastName = PhoneList ("");
    System.out.println ("Your full name is: " + lastName + "," + firstName);
}

public static String PhoneList (String input) throws IOException {
    boolean continueInput = false;

    while (continueInput == false) {

            BufferedReader bufferedReader = new BufferedReader (new InputStreamReader (System.in));
            input = bufferedReader.readLine();
            continueInput = true;

            if(input.matches("[a-zA-Z]+")) {
                continueInput = true;
                    }
                  else {
                 System.out.println ("Error, you may only use the alphabet");
                 continueInput = false;
        }
    }
    return input;
}

}

Answer 1

use String.matches(regex):

    if(input.matches("[a-zA-Z]+")) {
     System.out.println("your input contains no numerics");
        }
      else {
     System.out.println("only alphabets allowed");
}

the above regex checks a through z, or A through Z, inclusive (range).