Java: Programming: Initials 2 - Answer

// File   : data/strings/Initials2.java
// Purpose: Prints intials for either one or two names.
// Name   : Fred Swartz
// Date   : 2005-10-10

import javax.swing.*;

public class Initials2 {

    public static void main(String[] args) {

        while (true) {
            //.. Terminate loop if no input (cancel or zero-length text).
            String name = JOptionPane.showInputDialog(null, "Name?");
            if (name == null || name.trim().length() == 0) {
                break;    // Exit loop if no input.
            }
            name = name.trim();

            //.. First initial
            String firstInitial = name.substring(0, 1);

            //.. Last intial if there is one.
            String lastInitial = "";
            int blankPos = name.indexOf(" ");
            if (blankPos != -1) {     // There is a last name.
                lastInitial = name.substring(blankPos+1, blankPos+2);
            }

            //.. Convert to upper case and display.
            String initials = (firstInitial + lastInitial).toUpperCase();
            JOptionPane.showMessageDialog(null, "Initial(s): " + initials);
        }
    }
}