OOPS concept inheritace vs aggregation
Dinesh Pun
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I have read that code re-usability can be achieve through inheritance. Can't same functionality achieve through Aggregation by creating its object on same class then why we use inheritance?
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Total Answered: 1 Total Marked As Answer: 1 Posted On: 20-Oct-2015 08:51 Share: 
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Answers
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Rahul M...
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Hi Dinesh pun, Inheritance and Aggregation are used for code re-usability. But both have slightly different purpose of usability. It's depend on you which one better to use. Inheritance is 'is a' relationship while Aggregation is 'has a' relationship base usage. For example, i) suppose you have Wheel class public class Wheel
{
//members
//methods
}
and want to use in Car class then you don't have Car extend Wheel. Car has wheels. In this case you have to use aggregation as: public class Car
{
Wheel wheel;
// other memebers
}
ii) suppose you have Vehicle class then you can inherit to new class Car as Car is a vehicle: public class Vehicle
{
//members
//methods
}
public class Car : Vehicle
{
// inherits Vehicle properties and methods
}
Posted On:
22-Oct-2015 00:46
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