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 30561

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

Sonata,

1 5378

can we create instance for interface in java?

4 20925

What is Session reduplication and how its done?

2037

Which all r Final classes in java except string?

HCL,

5 34539

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

Lucent,

6 19441

What is the difference between java and .Net?

Bosch,

39 109568

What is the difference between jsp and servlet?

Symphony,

6 13148

Diff between C++ and java?

TCS,

9 12096

can we create a instance for intwerface?

3 6505

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

3 5641

what is difference between String buffer and String builder?

Benchmark,

5 12424

what is the use of custom tags? with example?

Photon,

1 4754

what is the life cycle of jsp?

Photon,

3 8662

what are the jsp tags with example?

Photon,

1 5291

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Un-Answered Questions { Core Java }

What is a function argument in java?

997

Can a string be null?

986

how to create multithreaded program? Explain different ways of using thread? : Java thread

986

Why lambda expression is used in java?

1061

What is the difference between path and classpath variables?

1055

What is a generic code?

1065

Explain about version control?

1037

What is the file extension for java?

1074

What does the ‘static’ keyword mean? Is it possible to override private or static method in java?

986

What are the Main functions of Java?

1092

Why packages are used?

1545

How do you compare objects in java?

955

Where will it be used?

1939

What is t type java?

1061

List down the methods and interfaces of collection class in java.

984

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