Since Java 7, we’ve had theCloneableinterface in Java. This interface provides another way to copy objects. Instead of implementing the copy logic manually, as we just did, we can implement theCloneableinterface and then implement theclone()method. UsingCloneableand theclone()method automatically...
Deep copy ,Shallow copy, copy constructor,"=" Dog.h #pragmaonceclassDog {public:char*name; Dog(); Dog(constDog &it);~Dog();voidoperator=(constDog &it); }; Dog.cpp #include"Dog.h"#include<string.h>#include<iostream>usingnamespacestd;//ConstructorDog::Dog() { name=newchar[20]; ...
The default copy constructor and assignment operator make shallow copies. A deep copy copies all fields, and makes copies of dynamically allocated memory pointed to by the fields. To make a deep copy, you must write a copy constructor and overload the assignment operator, otherwise the copy wil...
Commons Langalso provides an implementation of theclone()method. It also performs deep cloning using serialization. The implementation can be seenhere. Please note that Serialization will be very slow and does not clone transient fields. We can also useCopy Constructorif the object is not too ...
If an object has pointers to dynamically allocated memory, and the dynamically allocated memory needs to be copied when the original object is copied, then a deep copy is required. A class that requires deep copies generally needs: Aconstructorto either make an initial allocation or set the poi...
Note that clone is not for instantiation and initialization. It should not be synonymously used as creating a new object. Because the constructor of the cloned objects may never get invoked in the process. It is about copying the object in discussion and not creating new. It completely depends...