What are the benefits of polymorphism?

0 Answers  

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Write 7 differences between "Public" function and "Private" function?

2 Answers   IBM, Wipro,

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What is inheritance in oop?

0 Answers  

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What is polymorphism and its types?

0 Answers  

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Please tell me the oops concept with detailed answer

9 Answers   EEE,

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Whats oop mean?

0 Answers  

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who is the father of OPPS

4 Answers   Infosys, TCS,

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Write a program to find out the number of palindromes in a sentence.

1 Answers   TCS,

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what are the different types of qualifier in java?

0 Answers   TCS,

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Do you know about multiple inheritance?

1 Answers   Motorola,

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What polymorphism means?

0 Answers  

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what is the abstract class,interface ,its difference with a programatic eg.? hi,recently i went for an interview they ask me what is abstract class ,interface and its difference I said abstract class contain abstact method ,abstract method is a method with no body.Abstract class cannot be instantiated.Abstract class is a base class it required derived class for the implementation of method. Interface is a syntactical contract that all derived class should follow it define properties ,method,events which are known as member of interface. Then They asked me what is the difference between them. I said abstract class interface 1.abstact class can implement method 1.interface cant 2.abstact class can contain constructor, 2.interface cant destructor 3.abstract class cannot support multiple 3.interface support inheritance etc Then they said some different answer I said dont no. Then they ask me when i should make abstract class for an project and when i should make interface. I said if suppose there is two class which must be having method with different logic then we sholud make abstract class. and if suppose we have two class having method .with different logic then we can make interface . Am i correct with my explaination.if not correct me .please provide me that when should we create abstract class and interface and what is difference .please help me

1 Answers  

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