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Interfaces also extend

 
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Recently, while i was going thru Khalid Mugal, I came to know that Interfaces also extend (ref. to details of Topic "Interfaces"). I was really surprised cos' wht i knew till date was that Interfaces don't extend, they implement. Is that Book correct or I m. Please let me know. And if that happen can anyone explain how does that happen?
Thanx In advance
Anukampa
 
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Classes implement Interfaces but one interface can extend another interface.

I1 is the super interface. I2 is the sub-interface.
HTH
 
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NOT only they extend single interface but also multiple
for eg
interface I1 extends I2,I3 ..{
}
is perfectly legal but u cannot extend class like this
 
Anu
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Bharatesh can u please also let me know does interfaces also extend only one class at a time or there can be multiple inheritence in case of interfaces.
Thanx.
Anukampa.
 
Don't get me started about those stupid light bulbs.
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