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What is the difference betwwen in Abstractionand Encapsulation.explain with example
ghunghru
- Apr 22nd, 2009
Abstraction is just like a Hotel room where a single person wants only 1bed+bathroom but family required minimum of double bed +bathroom. Whereas few people want AC system or hot water system or T...
sajithkt
- Aug 8th, 2006
where do we use abstraction and encapsulation in core java. give some program examples....
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What are the merits and demerits of Object Oriented Programming?
Ayuashi
- May 26th, 2015
Demerits of oops :-
1) Slower programs
2) Not suitable for all types of problems
3) Larger program size
4) Run time errorsnethya
- Aug 26th, 2009
Demerits :
i) Compilation time
ii) Run time errors
Merits:
i) Real world entity -
Why do you need abstraction?
neverd
- Jun 12th, 2007
because you need easier maintenance, less code size; this will definitely slow down the runtime efficiency but worthy, especially for big projects
chandrasekhar vuppu
- Jan 22nd, 2007
Abstraction is required when you want implement generalization and specialization
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What is the difference between instance and object?
paritoshgautam
- Jul 22nd, 2010
Suppose there are number of classes and their objects whenever we call a particular object at run time then memory is allocated to that particular object and that is called Instance.
adeelqamar8
- Sep 12th, 2008
When you create a custom type (class) in any language, that class in OOP is called Object and when you create an istance of this class just as we create instance of built-in types e.g. (int a,float b)?it is called instance of the object.
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Explain working of printf.
praveen
- Jan 2nd, 2013
Printf means it prints the user statements
unrealvicky
- Aug 17th, 2010
Printf is a Variadic function. Variadic functions are functions which may take a variable number of arguments and are declared with an ellipsis in place of the last parameter. int printf(char *, ...);...
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What is a Presistent, Transient Object?
pavanhiran
- Jan 26th, 2008
HERE IS ANSWER FOR YOUR QUESTION:TRANSIENT OBJECTS ARE TEMPERORY IN NATURE. ALSO THEY CANT BE SERIALISED UNLIKE PERSISTENT OBJECTS. OBJECT WHICH IS PERMENT IN NATURE TILL THE END OF THE PROGRAM OR REM...
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Difference between pass by reference and pass by value?
navneetgoyal2000
- Jan 5th, 2011
Pass By Ref is used Generally, when the Caller wants to retain the ownership of the variable.Most Imp, Pass By ref is used mostly, when Function Chaining / Assignment Chaining is to be implemented.Wit...
ramaswamyratnala
- Jan 27th, 2009
There two ways can passes an argument to subroutine (method).1)call-by-value2)call-by-referencecall-by-value:----------------In this process first method copies the value of an argument in to formal p...
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What is difference between abstract data type and encapsulation of data?
remodarling
- Jul 22nd, 2009
Encapsulation means data hiding+abstraction. In data hiding we will not allow our data to go out directly. Eg. Declaring data members as private is data hiding, where as abstraction means hiding internal implementation is called abstraction.
ppchandak
- Dec 23rd, 2008
Data type, methods, properties etc of a objects are Data Abstraction where as its implementation and functionality is hidden from other objects is Data Encapsulation.
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Difference Between Aggregation and Composition
What is the difference between Aggregation and Composition?(Asked in Polaris Interview for Java Experienced People, on April 11, in Chennai)
sunilchandel
- Feb 25th, 2011
Composition:- All forms of composition include a has-a relationship.There is two type of composition : association and aggregation.Aggregation :- complex object is composed of other objects. e.g TV As...
beekal
- May 25th, 2010
Composition gives a part of relationship e.g Engine ----------------------- part of ------------------------------CArDestroy car then engine would be automatically destroyed along with car. In such ca...
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Difference between data encapsulation and abstraction?
shivamrastogi
- Nov 17th, 2008
Encapsulation: wraping of data in a single unit.Abstraction: Data hiding
hafeez_munawar
- Jul 11th, 2008
Encapsulation:Data and function that operate on that data are wrapped in a single unit.Abstaction:In abstratction, only interface in exopsed, the underlying details of the particular function is hidde...
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Classes and Objects
What is the relationship Between Classes and Objects?
amarkartu
- Dec 23rd, 2009
Class:1. Is a logical construct which defines the shape and nature of an object.2. Is a Template for an object.Object:1. Is a real time entity.2. Is a instance of class.
Mrinal Srivastava
- Sep 8th, 2009
The relationship between Classes and Objects can be defined in the easy way as The relationship between Maruti and a particular Maruti 800 DL 12 H 2343, implies when we talk about Maruti it gives us s...
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What are the advantages of using pointers in a program?
gunturi.prabhakar
- May 30th, 2008
The advantages of using pointers are: 1: you can work with the address of the variable2: you can reference the variables in more different easiest ways....??? e.g? int a[10],*b;??????????...
thathireddy
- Jan 27th, 2007
Thanks your's answer is wellplease send me examples of pointers like functions using pointers,structures using pointers etc
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What are the advantages of inheritance?
Brijendra
- Sep 23rd, 2012
1) Inheritance is the concept where the child class can concentrate on new features that it want. because all the basic features it will get it from its parent class.
2) It is about re-usability of features.manisha chandani
- Aug 24th, 2012
Helps in reusability of code.
Program development time is reduced.
Helps as security purpose. -
else
printf("b<.7 and a>=.5");
else
printf("b>=.7");
}">Output and why?main(){ float a=.5,b=.7; if(b
KishoreKNP
- Dec 2nd, 2009
Each and every float constant in C/C++ treated as double, because of this this program won't work as you expected. Add "f" like ".7f" after every float constant then it works as you expected.
Akash
- Feb 6th, 2007
The output of the above programme will be b=0.5 .7 is not stored as 0.7 ie it is stired to some value which is slightly less that 0.7 so the control will not work as expected [this is the only excception i guess for floating point nos]
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OOPS Interview Questions
Ans