Classes and objects in Java must be initialized before they are used. You’ve previously learned that class fields are initialized to default values when classes are loaded, and that objects are ...

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 ...

It’s purely fictitious data, made up in just a few minutes in Excel but we’re going to use this for the examples. To import this into Java we have a few choices; we could hand code the Trade class and ...