How do you achieve polymorphism?

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How is data security provided in Object Oriented languages? ?

5 Answers  

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What is oops in programming?

1 Answers  

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char* ptr = "Rahul"; *ptr++; printf("%s",ptr); What will be the output

9 Answers   Persistent,

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What Is a Polymorphism? How many types of polymorphism and whats that use in application?

2 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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why in java first invoke public static void main(String args[]) method????Why not public static void method1(String args[])??

1 Answers  

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create a class complex having real and imaginary part of a complex no. as a data member. overload the binary operators(+,- and *) to perform the operations on complex no. objects. overload binary operator using friend function.

2 Answers   CTS, Delhi University,

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What is constructor in oop?

0 Answers  

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what is virtual function?

26 Answers   Aspire, HP, Infosys, RoboSoft, TCS,

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In multiple inheritance , to create sub class object , is there need to create objects for its superclasses??? in java and c++ both. Actually i have some information that is , all available members from its superclasses , memory created in subclass obj , so no need to create object for its superclasses...??? Thanks in Advance

1 Answers  

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What is a null tree?

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