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.

Java Console class input and ouput The easiest way to garner user input in a Java program is to use the System’s Console class. Introduced in Java 6, Java’s System Console class provides two simple ...

Single responsibility example in Java Here's a simple example of a Java class that correctly observes the single responsibility principle. Imagine a number guessing game where each time it is played ...