To build a method, we use a number of statements to define ... then we recommend reading up on classes and objects over at the official Java Documentation from Oracle. Alternatively, why not ...

For example, suppose you need to introduce an enum for Canadian coins, and you want the class to provide the means to return the number ... s Java documentation doesn’t include a values() method ...

Only functional interfaces can use the lambda feature in Java. Abstract classes with only one abstract method cannot use lambdas. Can’t have constructor. Can have constructor. Can have abstract ...

While it seems so basic that it wouldn't require a mention, there's a basic and often violated software design principle pertaining to Java method ... when a use case pops up later on and requires the ...