Looking at your Example Blatz appears to add no value. Just pass a char around (or the Character wrapper whatever that is in java - I hate those wrappers) ...

Abstract classes and interfaces in Java serve fundamentally different purposes. Learn the differences between these Java language elements and how to use them in your programs.

Store any data returned from the JOptionPane in a variable It’s fun to do windowing programming with Java. Java’s Swing package has a variety of powerful classes with which to create desktop ...

What’s the difference between Java array length vs length ()? When you put round brackets at the end of a word in Java, it indicates that you are calling a method. Without round brackets, you are ...