In contrast, a data structure is a concrete implementation of one or more ADTs, similar to how Java classes implement interfaces. Examples of ADTs include Employee, Vehicle, Array, and List.

Learn some of the most effective ways to optimize a Java program with a large data structure, ... For example, you can use the final keyword to declare constants that do not change, ...

We then cover more simple examples to build your foundation before diving to some complex data structure problems that will solidify your Java 9 skills. With a special focus on modularity and HTTP 2.0 ...

In this case the example project is a package named backend.. This contains a simple object class Element and a backend service for creating and working with Element objects. The system methods are ...