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,

2248

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 5810

hr interview how many minutes asking question

2092

please send me hr interview questions in it industry

2173

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

LIC,

1 4518

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

HCL, NIIT,

1 13364

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 9232

aabccdee Find the used alphabets as abcde ?

4 6248

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,

2036

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

IBM, Manhattan, TCS,

3 5756

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

5714

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 8744

what is object slice?

HTC, TCS,

2 8401

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

TCS,

5 9938

why abstract class does not have object creation

Value Labs,

6 13721

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Un-Answered Questions { Core Java }

Can I override protected method in java?

1131

Are arrays classes in java?

1107

What is the main purpose of java?

1157

Give the difference between the println method and sqrt method?

1133

What are alternatives to java serialization?

1187

What is ‘is-a ‘ relationship in java?

1113

What does singleton mean in java?

1059

How will you serialize a singleton class without violating singleton pattern?

2005

What is the synonym of procedure?

1203

What do you understand by soft reference?

1103

What is the finalize method do?

1150

How do you sort in java?

1037

What is the difference between a local variable and an instance variable?

1177

What is close method? How it's different from Finalize & Dispose?

1124

What are some examples of variable costs?

1007

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