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Core Java Interview Questions
Questions Answers Views Company eMail

What is more advisable to create a thread, by implementing a Runnable interface or by extending Thread class?

 5 9526

what's diff between struts 1.1 & 1.2

Wipro,

3 24850

why applet doesn't have main? isn't possible a program with out main?

TCS,

9 19079

what is an virtual function

TCS,

2 4984

what is the difference b/w design pattern and architecture

Covansys,

4 7816

What is emant by API? is it related to java only or it is common for all OOPS supporting language?

 3 4552

What is means by DLL file means ? What is the use of DLL file? What are the contents of DLL file?

 4 11396

without using arthematic operation ,how can you write the logic for adding/substraction/multiplication?

Tanla Solutions, Wipro,

7 11206

How to create an instance of a class if the class has private constructor?

 3 8427

How to create an instance of a class without using "new" operator? Plz help me out properly.Thank u.

CSC,

10 25455

how u do unit testing?

iFlex,

2 4936

How u dubugg ur project?

iFlex,

1 5579

who was the founder of java

CTS, HCL, ProKarma,

32 47345

what is mean by method signature?

Satyam,

5 8022

what is mean by String and StringBuffer? What is mean by Methooverriding and Overloading?

Satyam,

2 4702

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Un-Answered Questions { Core Java }

How to call one constructor from the other constructor ?

602

Is Constructor possible in abstract class in java ?

588

Can a class be private in java?

541

What is a method type?

531

What is method and methodology?

608




Is java pass by value or pass by reference?

537

Will the jvm load the package twice at runtime?

572

What is functional interface in java example?

534

What is java and its types?

549

Write a program in java to find the maximum and minimum value node from a circular linked list.

518

Can bool be null?

520

What is a subsequence of a string?

545

What is integer parseint?

549

Is simpledateformat safe to use in the multithreaded program?

539

Difference between keyword and identifier.

591

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