With one simple line of code, Java’s JOptionPane enables a program to prompt the user with a Windows-based input dialog box, and return any user input as a String. It has always been a mystery to me: ...

You do not need to instantiate it with the new keyword each time ... A more versatile approach to Java user input is the Scanner class. And those are the ins and outs on how to use the Java Scanner ...

In prior Java 101 articles ... in modern GUI (graphical user interface) operating systems, where people use it to debug malfunctioning programs and to teach input/output in entry-level programming ...