What is the hashcode () and equals () used for?
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How does java enable high performance?
how to create constants in java?
I/O blocking means?
Can a class have a static inner class?
Why collection is called framework in java?
How do you calculate square roots?
What is http client in java?
What is difference between static class and normal class?
What are the rules for variable declaration?
my method "abc" return array of interface "xyz" and "pqr" is abstract class implements abc and class "jkl" extends pqr My problem 1) when i call abc it retrun array xyz how can i do this hint xyz refer_xyz = new jkl(); but i can't create array. 2)I want to access method of jkl using reference of xyz??
What is lazy programming?
When we r go to abstract class and when we go to Interface? i have confusion this question while in interview plz clarify