Java中的“类”是预定义的类吗？

Question

Can we say that java.lang.Class is predefined class in Java?

I am really confused on this.. I am new to Java so I am not sure. So please let me know the correct answer.

Answer 1

Class is a class where as class is a keyword.

• Type java.lang.Class

  Instances of the class Class represent classes and interfaces in a running Java application.

• Keyword class ( JLS Chapter 8 ff. )

  Class declarations define new reference types and describe how they are implemented
  [...]
  A class declaration specifies a new named reference type.

Answer 2

Class java.lang.Class . Class objects contain runtime representations of classes. Every object in the system is an instance of some Class, and for each Class there is one of these descriptor objects.
A Class descriptor is not modifiable at runtime

Declaration

public final class Class<T> extends Object
implements Serializable, GenericDeclaration, Type, AnnotatedElement