Every Java class inherits from Object, so familiarity with this superclass is fundamental to understanding the Java class hierarchy. Also see my Java tip introducing composition vs. inheritance.

The Java Language Specification clearly dismisses the existence of a primordial interface in a direct comparison to the primordial class java.lang.Object. Conceptually, however, the language acts ...

While it seems so basic that it wouldn't require a mention, there's a basic and often violated software design principle pertaining to Java method modifiers that is in need of explanation. A public ...