Here's how to make classes, fields, methods, constructors, and objects work together in your Java programs.

However, there are collection classes in Java that act like a Java array but resize themselves automatically. Any class that extends the List interface expands dynamically. Java arrays do not expand ...

The Java tutorial Java 101: Classes and objects in Java introduces the fundamentals of Java classes and objects, including how to declare classes, describe attributes via fields, describe ...

As they exist outside the Java heap, the klasses do not require a Java object header, and they are not the same thing as the class objects used in reflection (which are genuine Java objects).