Java interface cloneable

　　The purpose of the Cloneable interface is to act as an Mixin interface to an object, indicating that such an object allows cloning. If a class implements the Cloneable interface, the Clone method of object returns a domain-wise copy of the object, which is equivalent to creating an object without invoking the constructor.

You clone a complex object by calling Super.clone () first, and then by using the final method in the class to reset the properties of the object.

Resources

"Effective Java Chinese version 2nd edition" 11th article: Carefully overwrite the clone p46-52

Java interface cloneable