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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain your academic project?

Accenture, Levonsys, SDF, TCS, Tech Mahindra,

2 10842

What is JVM ? use of JVM?

BVC, Tech Mahindra,

6 14551

Memory management in JAVA

Tech Mahindra, Wipro,

3 15775

What is constructor

Manforce, Tech Mahindra,

9 11733

when everything can be done by static block then why do we use main method?.

2 5967

why we are calling j2se why not j1se or j3se or j4se..etc is there any reason.. can u please explain it... i shocked in my interview when they asked this question please explain ans

Infosys,

2 9357

Java openings 3 - 5 years, Lnt Infotech. requirements - core java, J2ee, struts, hibernate Interview Date:- 19 March 2011 Time:- 9:00 AM to 12:00 Pm Interview Location - L & T Infotech, Manapakkam, Chennai Refererral PS NO:- 291649 (Please mention this when u fill the form only then u will be considered for interview) Documents Required:- Latest Resume, Photograph and last 3 payslips Mail me on vasan2211@gmail.com once u appear for interview

L&T,

3362

how copy the hashmap object into arraylist at java program?

HCL, Wipro,

4 14678

can we access the method of class without creating the object of the class

3 6723

Nested classes VS Inner classes?

Infosys,

3 6405

waht You know about thread programming?

1 3495

What are Interceptors?

1 5786

i would like to attend for an interview of datalab technologies company i want to know the pattern of imnterview.

2386

Suppose i have two threads t1 and t2 are running.How the main thread will know that the two threads t1,t2 execution has completed?

Subex,

2 12692

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?

Cognizant,

1 4325

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Un-Answered Questions { Core Java }

what is the major difference between linkedlist and arraylist in java?

1219

What is a method in programming?

1188

How can we find the sum of two linked lists using stack in java?

1154

Explain java coding standards for variables ?

1176

Can I declare class as static or private?

965

What does 3 dots mean in java?

988

What is a java string?

1086

What is the purpose of extern variable?

1018

Give the difference between the println method and sqrt method?

1086

What is incompatible types in java?

1039

What happens if a try-catch-finally statement does not have a catch clause to handle an exception that is thrown within the body of the try statement?

1111

What about features of local inner class?

1069

Which of the following classes will have more memory allocated?

1017

How do you use compareto in java?

973

What is the final access modifier in java?

1079

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