What do you understand by the term Deep copy?

To store the values, which has already copied, deep copy is used. The reference pointers to the object are not copied by the deep copy. It simply helps in making reference to the object and the new object that is pointed by some other object gets stored. The changes are made in the original copy that will not affect any other copy while using the object. The Deep copy makes execution of the program slower due to making certain copies for each object that is been called.