Core Java Interview Questions
Questions Answers Views Company eMail

Which keyword specify that a variable is effectively final ?

532

Which access specifier can be used with class ?

511

How can we run a java program without making any object?

523

What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?

492

Explain about anonymous inner classes ?

546

What one should take care of, while serializing the object?

460

When do you get classcastexception?

530

Explain method local inner classes ?

568

Difference between object instantiation and construction ?

552

Difference between this() and super() ?

549

What are different ways of object creation in java ?

551

How can we create objects if we make the constructor private ?

517

What is a final class ?

569

Explain inner classes ?

623

Can static method access instance variables ?

567


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Un-Answered Questions { Core Java }

Is string thread safe in java?

547


What is the different types of functions?

532


What is the final blank variable?

567


How do you find the absolute value?

539


When do we use hashset over treeset?

510






Implementations of set interface?

538


Can you call a method on a null object?

541


Explain about the interpreter in java?

604


When does a class need a virtual destructor?

508


What are the different tags provided in jstl?

528


What is the significance of continue jump statement? Explain with an example.

711


How finally used under exception handling?

485


What is bytecode in java ?

582


How is a variable stored in memory?

508


What is the advantage of OOP in java?

643