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 10730

What is JVM ? use of JVM?

BVC, Tech Mahindra,

6 14338

Memory management in JAVA

Tech Mahindra, Wipro,

3 15608

What is constructor

Manforce, Tech Mahindra,

9 11405

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

2 5819

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 9230

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,

3303

how copy the hashmap object into arraylist at java program?

HCL, Wipro,

4 14485

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

3 6585

Nested classes VS Inner classes?

Infosys,

3 6277

waht You know about thread programming?

1 3404

What are Interceptors?

1 5685

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

2331

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 12577

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 4250

Post New Core Java Questions

Un-Answered Questions { Core Java }

what is the messsage u r going to get from an objectoriented programing?

2058

Is java a digit method?

953

Define the term string pool?

963

Can a static class have a constructor?

975

What type of language is java?

948

What is boolean keyword in java?

1084

What is a superclass?

1293

Is there any difference between synchronized methods and synchronized statements?

1058

How do you use compareto method?

957

Does java list allow null?

930

What is difference between add() and addelement() in vector?

1489

Differentiate between a constructor and a method? Can we mark constructors final?

1144

Describe string intern() methodology

1026

What is the major difference between linkedlist and arraylist?

979

What is an abstract method in java programming?

984

For More Un-Answered { Core Java } Questions Click Here