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

Core Java Interview Questions

Questions Answers Views Company eMail

Tell me about your ability to work under pressure

AXA,

2150

Hi am an mca graduate . i have done bsc maths in my degree . every company asks me why you make shift from maths group to computere field . What i need to answer?

2 5591

hr interview how many minutes asking question

2000

please send me hr interview questions in it industry

2072

How to Sort Strings which are given in List and display in ascending order without using java api.

LIC,

1 4353

How to Sort list of Strings in ascending order without using java api.

HCL, NIIT,

1 13164

If I will write String s=new String("XYZ"); String s1=new String("XYZ"); if(s.equals(s1)){ sop("True"); } else{ sop("False"); } This program will give me "True". But When I am creating my own class suppose class Employee{ public Employee(String name); } Employee e= new Employee("XYZ"); Employee e1 = neew Employee("XYZ"); if(e.equals(e1)){ sop("True"); } else{ sop("False"); } Then it will give the output as "False". Can I know what is happening internally?

5 8878

aabccdee Find the used alphabets as abcde ?

4 5933

there are N number of matchboxes numbered 1...N.each matchbox contain various number of stick.Two player can alternatevely pick some amount of stick from the higest stick containing box . The player is condidered win if there is no stick after his move.Find the final move so that the move player win. Note:In case the number of stick is equal ,pick the stick from the higest numbered box.

Manhattan,

1950

solve (x-1)(x-9)=8;

IBM, Manhattan, TCS,

3 5461

what type of questions asked for barclays technologies pune please send urgent

5618

take any 4 input numbers. like 2345.. wanted out put is All 16 combinations of the number 2345.. for example- taking input as 4565 output- 5654 4556 4655..

Emphasis,

2 8526

what is object slice?

HTC, TCS,

2 8158

Java does not support multiple inheritance. how interface helps in the same?

TCS,

5 9524

why abstract class does not have object creation

Value Labs,

6 13279

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Un-Answered Questions { Core Java }

What does n mean in java?

931

What are the main differences between the java platform and other platforms?

1000

What is a vararg?

972

What are the Main functions of Java?

1057

What is subsequence of a string?

1041

Why do we need wrapper classes?

1024

Explain about static nested classes in java?

1031

How will you calculate the depth of a binary tree if the tree contains 15 nodes?

1038

When throw keyword is used?

1001

What technique is carried out to find out if a particular string is empty?

976

What is sorting in java?

941

Can we override constructors in java?

1079

What does nullpointerexception mean?

1029

What is a line separator in java?

935

What is the same as procedures?

936

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