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Cognizant Core Java Interview Questions
Questions Answers Views Company eMail

How OOPS concept is achieved in Java?

 6 22378

Explain difference between final, finally and finalize?

 3 27475

what is the difference between abstract class and Interface?where we can use it in realtime projects?

 23 64759

explain System.out.println

 107 176628

What is hard code & soft code?

 7 58214

What is Hash Code in Java?

 6 13916

What are uses of Hash Code?

 2 6373

Difference between interface and abstract class with ex.

 4 8049

What is multithreading ???? How to stop multithrading in java????

 1 4555

Suppose there is an array list [10,5,20,19,15,24].Print them in ascending & descending order in collection framework concept ???

 2 6053

What is default specifier ??? Use of default specifier ???

 4 6703

Is Java Class Threadsafe ????? How to make Java class Thread safe??

 2 6952

I have a string like _a01_a02_a03_ and another string like _2_1.5_4_ as input.I want to extract a01,a02... to a string array and 2,1.5,etc to a double array with a01 corresponds to 2 and a02 to 1.5 etc. Need code in core java.. Can you do it?

 1 3556

What are non-access modifiers?

 2 2827

Why do we need to override equals() and hascode() method of object class?

 1 2567

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Cognizant Core Java Interview Questions


Un-Answered Questions

What are the different modes available for object spying?

233

How are animals classified according to the germ layers present in their embryonic development?

5

candidate key is subset of super key but not vice-verse explain

1569

What is the main difference between a bird heart and a mammalian heart?

464

How can we show that a scope variable should have one-time binding only?

409




Name some common causes of control valve noise?

592

Does anyone have any good examples of some acceptance criteria for non-functional requirements?

1539

What is xml and xslt?

447

What education is required for data science role?

116

What are “reason codes” used for in the accounts receivable module and what are the factors to be considered in their configuration?

758

What are the UE modes in GSM,GPRS,UMTS and LTE

3118

What is a query in a database?

528

Can NameNode and DataNode be a commodity hardware?

1390

Why sessions are used in php?

498

What changes does a control need to run in the Visual Basic 5.0 Control Creation Edition?

1612