I’ve compiled a list of questions and answers about fundamental topics in Java that I believe every Java developer should be aware of. This is part 4, covering the topic of Interface and Abstract ...

Nested classes are classes that are declared as members of other classes or scopes. Nesting classes is one way to better organize your code. For example, say you have a non-nested class (also known as ...

When developing framework and reusable code, we need to develop classes that are partially abstract with partial implementation. Protocol and protocol extensions provide this, but they cannot have ...