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Cognizant Core Java Interview Questions
Questions Answers Views Company eMail

How OOPS concept is achieved in Java?

6 22408

Explain difference between final, finally and finalize?

3 27492

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

23 64797

explain System.out.println

107 176851

What is hard code & soft code?

7 58247

What is Hash Code in Java?

6 13926

What are uses of Hash Code?

2 6385

Difference between interface and abstract class with ex.

4 8063

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

1 4561

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

2 6069

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

4 6724

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

2 6965

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 3569

What are non-access modifiers?

2 2845

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

1 2579

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Cognizant Core Java Interview Questions


Un-Answered Questions

Explain me what are the differences between mysql_fetch_array(), mysql_fetch_object(), mysql_fetch_row()?

488


My question is whether bellow formula is correct to find bus size for 46kA for 0.5 second & what is RT in bellow formula. formula to calculate the size of busbar to withstand the thermal stresses due to currents with duration of 0.2 sec to 5 sec. Sp = RT( I x I x t) / K Where Sp – is the cross sectional area of bus bar in millimeters. I -    is the value of AC fault current. t -    is the operating time of disconnecting device in seconds. K –  is the factor depending on the material of the conductor, insulation and initial and final temperature. Value of ‘k’ for copper is 143.

1448


What is a concrete class in c#?

530


What is crash?

565


Define blouson?

1






What do you mean by eutrophication?

76


List new features that supported by joomla 3.9.1?

56


Which is better viewstate or session?

513


What are global variables?

640


What are bounce rates?

188


What is the difference between 'dump tran database to physical name' 'dump tran database with truncate_only' and dump tran database with no_log'and in real time when we go to truncate the log?

499


Tell about NABARD and its working?

649


How to sort numbers in java without array?

525


Difference between uniqe index and uniqe constraint?

544


What are the 3 types of hackers?

484