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Java (
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Inheritance (
http://www.daniweb.com/forums/thread165189.html)
| Simran1 | Dec 31st, 2008 6:31 am | |
| Inheritance Hello,
Please tell me in Java we don't have a multiple inheritance? so,in which function we use these inheritance.
Thanks |
| javaAddict | Dec 31st, 2008 6:42 am | |
| Re: Inheritance Quote: Originally Posted by Simran1 (Post 767864) Hello,
Please tell me in Java we don't have a multiple inheritance? so,in which function we use these inheritance.
Thanks | You say:
> we don't have a multiple inheritance
but then you ask:>in which function we use these inheritance
The only thing I can say is that java doesn't have multiple class inheritance, but multiple Interface implementation.
If that doesn't cover you, ask a better question |
| chili5 | Dec 31st, 2008 2:30 pm | |
| Re: Inheritance What do you mean?
There isn't multiple inheritance in Java. It's a single inheritance only language. :) |
| jasimp | Dec 31st, 2008 7:41 pm | |
| Re: Inheritance Quote: Originally Posted by chili5 (Post 768138) What do you mean?
There isn't multiple inheritance in Java. It's a single inheritance only language. :) | That's what javaAddict said, Java does not have multiple class inheritance, you can only only extend (is-A) one class. However you can implement (has-A) any amount of interfaces you want. |
| vijendtra | Jan 1st, 2009 2:04 am | |
| Re: Inheritance Quote: Originally Posted by Simran1 (Post 767864) Hello,
Please tell me in Java we don't have a multiple inheritance? so,in which function we use these inheritance.
Thanks | c there is no concept of multiple inheritance in java but some time it seems that there may be a multiple inheritence.... |
| parthiban | Jan 1st, 2009 3:30 am | |
| Re: Inheritance Quote: Originally Posted by jasimp (Post 768293) That's what javaAddict said, Java does not have multiple class inheritance, you can only only extend (is-A) one class. However you can implement (has-A) any amount of interfaces you want. | Hi Sriran1 ,
what jasimp said is correct expect that implementing a interface is *NOT* mean "Has-A" relationship.
Has-A relationship is what when an Class has other Class's object in it's attribute
Implementing a interface is also means "Is-A" relationship
e.g
//for Is-A
class Mammal {
}
class Dog extends Mammal { }
//for Has-A
class Tail { }
class Dog extends Mammal { // Dog IS-A mammal
Tail tail ; // and Has-A Tail
} |
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