Java J2EE Interview Questions
Questions Answers Views Company eMail

What is the purpose of premetive data types in java?

Merrill Lynch, TCS,

2 7144

Howmany number of objects we can store in an ArrayList. Is there any limit?

TCS,

7 12407

What is the basic functionality of DataOutput interface in java?

TCS,

2 5152

Can we inherit the constructor in a Class?please give one example.

iGate,

9 16938

Why do we use public static with the main function in Java?

College School Exams Tests, Infosys,

13 17071

What is the difference between overloading and overriding a function?

eG Innovations, Infosys, TCS,

13 20218

How u validate date in DD/MM/YY format. and how u validate money in ur jsp

Ashok Leyland, Satyam, Tech Mahindra, Tomax,

3 7383

when we have to use final class in java?

2 6913

how to minimize the functionality to will not force garbage collector?

2 3555

Life Cycle of Thread

IBM,

4 9581

If we disable cookies in our web page, what will happen?

Zensar,

6 16149

what is the difference between Cpp And Java

Infosys,

15 23365

what is the use of reference variable

6 20429

httt method

HCL,

2 4886

what is difference between vector and arraylist?.

C DAC, HCL,

4 10274


Un-Answered Questions { Java J2EE }

Can you change array size in java?

522


What is callback methods Component methods called by the container to notify the component of important events in its life cycle?

525


What is comparable and comparator interface? List their differences

570


Is java 1.7 the same as java 7?

522


What is hibernate dialect for oracle?

239






How to update a resultset programmatically?

585


Which is faster hibernate or jdbc?

183


How to check jdbc driver version in websphere?

541


When will you define a method as static?

540


How is a variable stored in memory?

516


Is functional programming stateless?

515


Which class is the Front Controller in Struts2?

534


What is the use of runnable interface?

597


What is the scope or life time of instance variables?

645


Why do we need spring?

154