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 30292

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

Sonata,

1 5303

can we create instance for interface in java?

4 20757

What is Session reduplication and how its done?

1998

Which all r Final classes in java except string?

HCL,

5 34384

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

Lucent,

6 19238

What is the difference between java and .Net?

Bosch,

39 108578

What is the difference between jsp and servlet?

Symphony,

6 12927

Diff between C++ and java?

TCS,

9 11852

can we create a instance for intwerface?

3 6376

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

3 5555

what is difference between String buffer and String builder?

Benchmark,

5 12207

what is the use of custom tags? with example?

Photon,

1 4713

what is the life cycle of jsp?

Photon,

3 8537

what are the jsp tags with example?

Photon,

1 5215

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Un-Answered Questions { Core Java }

Can we serialize static variables in java?

1056

what is the swingutilities.invokelater(runnable) method for? : Java thread

1001

What is blank final variable?

1029

Can It is possible to synchronize the constructor of a Java Class?

1056

What is are packages?

991

What is difference between stringbuffer and string?

914

How many bytes is a unicode character?

972

What is a local class in java?

1000

What is meant by object?

971

What are the differences between checked exception and unchecked exception?

938

Differentiate between == and equals().

1016

What is static variable with example?

966

What is diamond operator in java?

908

What is singleton class example?

985

What is predicate in java?

1027

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