How do I show only the first letters of a string?

Question

I\'m prompting the user to enter their first and last name but I can\'t figure out how to show just their first and last initials

import javax.swing.*;
//import          


        

Answer 1

You can use chatAt() method.

JOptionPane.showMessageDialog(null, 
            "Your initials are " + firstName.charAt(0) + " " + lastName.charAt(0));

Answer 2

firstName.charAt(0) returns the char value at the 0 index. That is the first letter of your firstName String.

Answer 3

If you want to show a message box like you were doing before, this should work:

JOptionPane.showMessageDialog(null, 
    "Your initials are " + firstName.substring(0, 1) + " " + lastName.substring(0, 1));