What is indexof?
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When a byte datatype is used?
What is a ?
Why unicode is important?
What is assembly used for?
What is constructor chaining and how is it achieved in java?
What is difference between length and length() method in java ?
A class can be a subclass of itself?
What is generics in java interview questions?
What is inner class?what is the use of inner class?where we create the object for inner class? and inner class can extend any class or inner class can implement any interface?
Is int primitive data type?
What is a databasemetadata?
Marker interface means , interface which has no methods.Then what is the necessity of its usage.I read "it tells the compiler that it should be treated differently ". "It is used to store state of an object". But still am not clear.Please explain clearly.