Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

what is bytecode? watz the difference between machine code and bytecode?

Oracle,

9 27252

watz the difference between abstract class and interface? Which one u ill choose as a designer?

Sonata,

1 4571

can we create instance for interface in java?

4 19240

What is Session reduplication and how its done?

1552

Which all r Final classes in java except string?

HCL,

5 32853

what is bytecode ?explain in detail and watz the difference between bytecode and machine code?

Lucent,

6 17188

What is the difference between java and .Net?

Bosch,

39 99404

What is the difference between jsp and servlet?

Symphony,

6 11075

Diff between C++ and java?

TCS,

9 9662

can we create a instance for intwerface?

3 5195

y cant i declare method like public final static show()

3 4494

what is difference between String buffer and String builder?

Benchmark,

5 10480

what is the use of custom tags? with example?

Photon,

1 4055

what is the life cycle of jsp?

Photon,

3 7106

what are the jsp tags with example?

Photon,

1 4532

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Un-Answered Questions { Core Java }

What is double in java?

498

Can we call thread start () twice?

505

What is the difference between interface & abstract class?

551

How do you download stubs from Remote place?

1346

What are the advantages of java over cpp?

542

Can we overload run() method in java?

581

What is the difference between dom and sax parser in java?

517

How do you control extraneous variables?

493

What is ++ a in java?

555

What is an example of a boolean?

556

What is method overloading with type promotion?

570

What happens if we override private method?

516

What is difference between calling start() and run() method of thread?

550

What is the default size of load factor in hashing based collection?

552

What are the basic concepts of OOPS in java?

556

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