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Cognizant Core Java Interview Questions

Questions Answers Views Company eMail

How OOPS concept is achieved in Java?

6 25154

Explain difference between final, finally and finalize?

3 29405

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

23 70952

explain System.out.println

107 200159

What is hard code & soft code?

7 61221

What is Hash Code in Java?

6 15869

What are uses of Hash Code?

2 7415

Difference between interface and abstract class with ex.

4 9532

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

1 5336

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

2 7003

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

4 8460

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

2 7909

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 4291

What are non-access modifiers?

2 3768

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

1 3531

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Cognizant Core Java Interview Questions

Cognizant Core Java Interview Questions (18)

Un-Answered Questions

Case Study:-Given a standard calculator with the basic functionality of addition,substration,multiplication and division-write the test case to test this and tell how did it take to write the above test case and how ling would it take to execute them?

2129

What is a linqdatasource control?

105

What is http client in java?

1050

who would fund our next round? - Venture Capitalists

1081

explain the three services model commonly know as a three-tier application.

969

What is amazon spark?

263

Why is linux cpu usage so high?

1030

What are embedded styles?

594

when to choose “internal table” and “external table” in hive?

651

Why data types are important in c#?

918

What is clusterservices in obiee ? Why its used?

892

Can you delete data element, which is being used by table fields?

1321

What is error code 0xc0000005?

794

how a log ratio amplifier works?

2120

How would you import data from MYSQL into HDFS ?