Core Java Interview Questions
Questions Answers Views Company eMail

What is garbage collection in Java, and how can it be used ?

Infosys, HCL, Accenture, Wipro, Sara, SITS,

32 53593

Differentiate Vector and ArrayList?

Wipro, Max Telecom,

6 6656

Differentiate constructor and a method and how are it be used?

Wipro,

6 7190




What is an abstract class?

Wipro,

7 6067

How can final class be used?

Wipro, Accenture,

5 7910

By what default value is an object reference declared as an instance variable?

Wipro,

1 9208

Java support what type of parameter passing ?

Wipro,

7 10541

Explain the term serialization?

Wipro,

10 8384




Is there is any error if you have multiple main methods in the same class?

Wipro,

10 9686

What is Overriding and how can it be used?

Consagous, Wipro,

7 12416

Explain pass by reference and pass by value?

IBM, Wipro,

8 10423

In which way does a Primitive data type is passed ?

Sun Microsystems,

5 6645

What happens when a main method is declared as private?

L&T, DELL, Infosys, Sun Microsystems,

21 31573

Is there any need to import java.lang package?

Sun Microsystems,

13 13620

What is UNICODE?

3 3756


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Un-Answered Questions { Core Java }

why java uses class level type casting ?

1389


Explain all java features with real time examples

391


whatis Home interface and Remoteinterface? with example?

732


What is stored procedure. How do you create stored procedure ?

705


How to implement a multithreaded applet?

1280


Hi.... I applied for the post of scientific officer/Engineer-SB(Programmer).Please post the syllabus and sample papers.

701


when to use ArrayList and when to use HashMap in webApplication.

2546


I want to store more than 10 objects in a remote server? Which methodology will follow?

1681


please send me hr interview questions in it industry

696


if u open login & logout ,how can udisplay the timelogin & logout members ?

769


we have syntax like for(int var : arrayName) this syntax is to find whether a number is in the array or not.but i want to know how to find that number's location.

685


What is Applet Stub Interface ?

1098


what is ststic with example

770


v-model life cycle

674


What is procedure overloading?

875