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Core Java Interview Questions
Questions Answers Views Company eMail

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

Oracle,

9 27371

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

Sonata,

1 4599

can we create instance for interface in java?

 4 19299

What is Session reduplication and how its done?

 1569

Which all r Final classes in java except string?

HCL,

5 32919

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

Lucent,

6 17261

What is the difference between java and .Net?

Bosch,

39 99681

What is the difference between jsp and servlet?

Symphony,

6 11141

Diff between C++ and java?

TCS,

9 9743

can we create a instance for intwerface?

 3 5234

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

 3 4535

what is difference between String buffer and String builder?

Benchmark,

5 10535

what is the use of custom tags? with example?

Photon,

1 4082

what is the life cycle of jsp?

Photon,

3 7152

what are the jsp tags with example?

Photon,

1 4560

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Un-Answered Questions { Core Java }

Can we sort a map in java?

578

What are java packages? What's the significance of packages?

633

What does nullpointerexception mean?

619

What is object english?

591

Is passing by reference faster?

528




What one should take care of, while serializing the object?

489

What is singleton class and how can we make a class singleton?

661

What are the java ide's? Explain

530

How does queue work in java?

532

What are the differences between stringbuffer and stringbuilder?

547

Explain about map interface in java?

595

How do you declare an empty string?

624

What is boolean strategy?

630

Does sprintf allocate memory?

597

Explain the difference between treeset and treemap in java?

536

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