After looking at some of the advanced ideas of classes and objects, we need to return to some simpler topics to make our understanding complete. We need to look more closely at data and, to get things ...

Creating simple data classes in Java traditionally required substantial boilerplate code. Consider how we would represent Java’s mascots, Duke and Juggy: public class JavaMascot { private final String ...

Although the snooze button is probably the most commonly used button on an alarm clock, even a simple AlarmClock class needs a few more features. For instance, you might want to control how long the ...

In most cases we get numeric values into variables by initializing them using a literal - i.e. data that you write out. For example in: int a=12345; 12345 is a numeric literal. To be able to specify ...