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Core Java Interview Questions
Questions Answers Views Company eMail

Difference between Web-based applications,Client- Server applications and Distributed applications?

Infosys,

3 12406

Catch(Exception e){ } in that what is Exception and purpose of that in that place exactly?

 3 3839

what is the diff between Servletcontext and servletconfig?

 5 5735

how many access specifiers are available in java

 11 19890

How many objects are created for a singleton class

Ness Technologies,

7 12911

How to sort the elements in HashMap

Ness Technologies,

3 10603

What is non static block in java

Emphasis, Ness Technologies,

10 20821

How to synchonise HashMap

IBM,

4 6016

Program to output as below formate: 1 2 3 4 5 6 7 8 9 10

Huawei,

4 6735

Program to find greatest prime number in n numbers?

Huawei,

3 14523

program to validate the IP address? Validity range should be 0 to 255

Huawei,

1 9849

question on Thread synchronization

Huawei,

3 9041

diff b/w sleep(1000) and wait(1000)?

Huawei,

4 19220

WHAT IS THE MEANING OF ALL TYPE OF BUZZWORDS?

 4 12963

who can we create the object of a class? in how many ways we can create it (max 5)

 2 4625

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Un-Answered Questions { Core Java }

What is java used for?

547

What is return code?

551

Explain the difference between protected and default access.

509

What is sorting in java?

521

What is lambda expression in java?

533




What is the use of arraylist class in java?

540

What does java edition mean?

518

What is the difference between preparedstatement and statement in java?

542

what are three ways in which a thread can enter the waiting state? : Java thread

568

What is cr keyboard?

642

Can Exception handling we can handle multiple catch blocks?

637

Can an interface have a class?

555

Can we serialize arraylist in java?

528

What is meant by anonymous class?

583

What does singleton mean in java?

504

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