what is code for call by value and call by reference?

1 Answers  

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what is the difference b/w abstract and interface?

2 Answers   Merrill Lynch, Schneider, Scio Healthcare,

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Describe the difference between a Thread and a Process?

11 Answers   Siebel Systems,

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What causes polymorphism?

0 Answers  

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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

0 Answers   TCS,

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how many types of notations are in java

1 Answers   National University of Modern Languages (NUML),

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Program to check whether a word is in all capital letters

1 Answers  

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What do you mean by inheritance?

0 Answers   IBS,

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What is byval and byref? What are differences between them?

0 Answers   HCL, Wipro,

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You attempt to query the data base with this command: SELECT name, salary FROM employee WHERE salary=(SELECT salary FROM employee WHERE last name='Wagner' OR dept no=233) Choose most appropriate option from the following: 1)Sub-queries are not allowed in the where clause. 2)a multiple row sub-query used with a single row comparison operator. 3)a single row query is used with a multiple row comparison operator.

10 Answers   Zycus Infotech,

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Describe these concepts: Polymorphism, Inheritance and Abstraction.

0 Answers   TCS,

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What is abstract class in oop?

0 Answers  

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