Extension class loader: Loads classes that are part of Java extensions. Application class loader: Loads classes that are part of the application being executed.

For this example, we’ll look at the HashMap class, which is part of the Java Collections Framework in the java.util package. HashMap, which describes a hash table-based implementation of a map, ...

In part 3 of this series we'll learn how to import additional classes and use try blocks and maps. By the end we'll have a functioning user login screen!

To recap, part one of this tutorial explained that Java was an ‘object oriented’ language. This means that we’re using classes to define ‘objects’ (objects essentially containing data ...