In Java, nested classes are categorized as either static member classes or inner classes. ... The first line instantiates JButton, passing close as the button label to JButton‘s constructor.

In Java, it is considered best practice to camel case when choosing class names with the first word capitalized. Camel case simply means that you remove all spaces and use capitalization for each ...

When compiling class initializers and class initialization blocks, the Java compiler stores the compiled bytecode (in top-down order) in a special method named <clinit>().

Sealed classes make Java an even more powerful and expressive language and set the stage for even more sophisticated techniques such as pattern matching, which we'll explore in a subsequent article. A ...