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What is Object and Class? What are the differences between
them?
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Answer / jack
simple analogy for this quest is u declare int x;
and u ask diff between int and x;
Object is an instance of a class.......
--when an object of a class is created the memory for
that class is created...
--U can access the class members using the . operator in
your program....but u r not allowed to access the private
and protected members, which can be accessed by the member
functions only........
Class is the user defined datatype...which contains data
members and member functions.....
| Is This Answer Correct ? | 8 Yes | 0 No |
Answer / pankaj vashishta
Class is template for creating similar type of entities.
Class doesn't take memory space untill it contains static
members.
In a specific Class, you declare the attributes(field
variables) and its behaviour(functions).
But Class doesn't have any state and identity.
Objects are the real time entity which are created through
their template, thier class.
By real time entity, I mean they would occupy a memory
space in which they will save the values of its atrributes.
These values create a state of an object.
Since Object occupy a space in memory so they have unique
address in memory. This become the identity of an object.
For example : Pen is a class, which has weight and color as
its attribute. They may have behaviour like write().
Still they don't occupy a space in memory.
When I say My pen ,It will be an object of class Pen since
it will have some values for weight like 10 gm and color
like blue. This will occupy some memory to save these
values.
| Is This Answer Correct ? | 4 Yes | 0 No |
Answer / kalaivani
object-run time entity
class- bind of function & data
| Is This Answer Correct ? | 3 Yes | 1 No |
Answer / prabhakar
class is a collection of data and member functions.
objcet is instance of a class
| Is This Answer Correct ? | 1 Yes | 1 No |
Answer / poorna chandar rao
Object and Class both are same there is no difference
bettwen them those are having properties(data) and methods
but small difference beteween them that is objects are
available physically avialable and class is not avialable
class is a bluprint
| Is This Answer Correct ? | 0 Yes | 3 No |
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Question In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Question Submitted By :: Sunil Kumar I also faced this Question!! Rank Answer Posted By Re: In a class, there is a reference or pointer of an object of another class embedded, and the memory is either allocated or assigned to the new object created for this class. In the constructor, parameters are passed to initialize the data members and the embedded object reference to get inialized. What measures or design change should be advised for proper destruction and avioding memory leaks, getting pointers dangling for the embedded object memory allocation? Please suggest. Answer # 1 use copy constructors 0 Shanthila There is something to be taken care in destructor, in copy constructor, suppose the memory is assigned to the embedded member object pointer with the parameter passed value, but if some other objects of different class also are pointing to this memory, then if some one deletes the object then this class member pointer object will become dangling, or if the object is not deleted properly then there will be memory leak. Please suggest the design change required to handle or avoid this situation
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