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 30886

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

Sonata,

1 5499

can we create instance for interface in java?

4 21164

What is Session reduplication and how its done?

2088

Which all r Final classes in java except string?

HCL,

5 34708

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

Lucent,

6 19700

What is the difference between java and .Net?

Bosch,

39 110756

What is the difference between jsp and servlet?

Symphony,

6 13415

Diff between C++ and java?

TCS,

9 12429

can we create a instance for intwerface?

3 6681

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

3 5805

what is difference between String buffer and String builder?

Benchmark,

5 12720

what is the use of custom tags? with example?

Photon,

1 4828

what is the life cycle of jsp?

Photon,

3 8813

what are the jsp tags with example?

Photon,

1 5395

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Un-Answered Questions { Core Java }

Why doesn't the java library use a randomized version of quicksort?

1040

What is integer valueof?

1175

Why do we need wrapper classes?

1128

How can you read an integer value from the keyword when the application is runtime in java? example?

1210

What type of variable is error flag?

1141

Can we write class inside a class in java?

1040

Can a final method be overloaded?

1016

Is an object null?

1036

What is a get method?

1143

Explain the differences between abstraction and encapsulation?

1109

Why volatile is used in java?

1161

Why main method is called first in java?

1063

What is an argument in java?

997

What is meant by class?

1064

Is empty list java?

975

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