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Core Java Interview Questions
Questions Answers Views Company eMail

finalize() method?

 5 10203

What is the use of bin and lib in JDK?

TCS,

8 33654

What are Transient and Volatile Modifiers?

SAP Labs, TUP Manila,

3 14527

Difference between this(), super()?

College School Exams Tests, Oracle,

12 33789

What is a package?

 2 5295

What is casting?

 3 5682

Difference between an argument and a parameter?

Accounting, HCL, IBM, Quinnox,

10 45594

Explain final, finalize() and finally?

Accenture, TCS,

11 35517

What are different types of access modifiers?

 3 7344

What are Encapsulation, Polymorphism and Inheritance?

 5 23531

Explain different ways of passing arguments to sub-routine?

 1 5192

Difference between Superclass and Subclass?

 7 46846

what modifiers are used with top-level class?

 2 5454

What are inner and anonymous class?

 3 6259

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

BMC, Cyber Shot, Infosys, VTS, Wipro,

39 115836

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Un-Answered Questions { Core Java }

What is foreach loop in java?

659

Is it possible to write a regular expression to check if string is a number?

680

What is a Presistent Object?

811

what are three ways in which a thread can enter the waiting state? Or what are different ways in which a thread can enter the waiting state? : Java thread

639

What is the java reflection api? Why it’s so important to have?

663




What is a return in java?

668

How do you check if a string is lexicographically in java?

636

Which is the best approach for creating thread ?

851

What is an array length?

617

String and stringbuffer both represent string objects. Can we compare string and stringbuffer in java?

682

Can we print null in java?

710

Can we sort hashmap in java?

652

What is a priority queue java?

630

Why super is first line in java?

689

Differentiate between stringbuffer and stringbuilder in java.

667

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