what is the difference between single inheritance and single level inheritance?

what is the difference between single inheritance and single level inheritance?

Single inheritance means, A class can inherit only one class directly, that means a Class can extend only one class in anycase.
(Java support single inheritance not multiple like C++)

Single level inheritance is same as specified above, but java supports mutiple level inheritance

For instance

Class A
{}

class b extends a
{}

class c extends b
{}

over here class c is inherting from both a and b.

There is no difference between single and single level inheritance...Both of them same..

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suresh