Why should we use singleton pattern instead of static class?
What is actual difference between statement,prepared statement and callable statement and when we have to use it? pls post a answer with code and clear explanation. thanks
What are access modifiers in Java ?
What is data type example?
What is difference between printf and scanf?
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??
Is arraylist an object in java?
Why we used break and continue statement in java?
Can java cast null?
Explain different ways of creating a thread?
Can keyword be used as identifier?
What is object class in java?
Can you give names of Container classes?