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we know that Object class is super class of every class & a class extends only one class. so how is it possible to a class to extend other than Object class?
Because java supports multilevel inheritance.
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how can you load DLL files when your java class is loading first time ?
jni using here but exactly do not known.
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if interface & abstract class have same methods & abstract class also not contain any implementation for those methods which one you prefer ?
use abstract class because we implement only requried methods of abstract class but for interface we must implement all methods whether or requried or not
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what is difference between array & arraylist?
arraylist is resizable where as using array it is not possible.
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