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

Core Java Interview Questions

Questions Answers Views Company eMail

finalize() method?

5 9650

What is the use of bin and lib in JDK?

TCS,

8 32408

What are Transient and Volatile Modifiers?

SAP Labs, TUP Manila,

3 14187

Difference between this(), super()?

College School Exams Tests, Oracle,

12 32546

What is a package?

2 5022

What is casting?

3 5353

Difference between an argument and a parameter?

Accounting, HCL, IBM, Quinnox,

10 44605

Explain final, finalize() and finally?

Accenture, TCS,

11 34374

What are different types of access modifiers?

3 6972

What are Encapsulation, Polymorphism and Inheritance?

5 23077

Explain different ways of passing arguments to sub-routine?

1 4968

Difference between Superclass and Subclass?

7 46037

what modifiers are used with top-level class?

2 5144

What are inner and anonymous class?

3 5854

what is the Diff. between Access Specifiers and Access Modifiers?

BMC, Cyber Shot, Infosys, VTS, Wipro,

39 112033

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Un-Answered Questions { Core Java }

Differentiate jar and war files?

583

What Is Composition?

569

Does garbage collection occur in permanent generation space in jvm?

591

How to perform merge sort in java?

576

Assume a thread has lock on it, calling sleep() method on that thread will release the lock?

613

Should a main method be compulsorily declared in all java classes?

520

What 5 doubled?

498

what is session in java?

735

What is difference between printf and scanf?

506

Can we declare the main method of our class as private?

544

What is variable explain?

522

What are the methods to rectify ambiguities in the interfaces in JAVA?

579

Is main a function?

506

Can you sort a string in java?

480

how do I create a runnable with inheritance? : Java thread

499

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