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,

2198

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 5693

hr interview how many minutes asking question

2045

please send me hr interview questions in it industry

2125

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

LIC,

1 4437

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

HCL, NIIT,

1 13272

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 9045

aabccdee Find the used alphabets as abcde ?

4 6110

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,

1991

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

IBM, Manhattan, TCS,

3 5610

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

5665

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 8634

what is object slice?

HTC, TCS,

2 8284

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

TCS,

5 9749

why abstract class does not have object creation

Value Labs,

6 13523

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Un-Answered Questions { Core Java }

What is java virtual machine? Explain

1033

Can inner class final?

1094

How many types of string data types are there?

1096

Explain the hierarchy of java exception classes?

1107

Explain the difference between call by refrence and call by value?

1026

What is use of valueof () in java?

1053

What is the numeric promotion?

1027

What is data structure in java?

990

Explain java coding standards for classes or java coding conventions for classes?

1130

What checkbox method allows you to tell if a checkbox is checked?

1011

Which class is the superclass for all the classes?

1021

Is null keyword in java?

944

How to stop a thread in java? Explain about sleep () method in a thread?

1015

Does java set allow duplicates?

1086

What are the types of casting?

1068

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