Java Interview Questions

Polymorphism

Explain polymorphism to your 7 year old nephew.

Casting - what is the result of 5.3+"2.68" = ?

Why bind variables will be deleted when you restart the server. Can you change this scenario.

I am trying to develop a small application. In this I have provided registration and login form. Username and password are stored in the jndi server. This application is working fine. But when I am restarting the server, all the bind variables are deleting. Why? I want to store them permanently. Can...

Java io question

How to perform operation like sorting searching on records in a text file in Java. Record may contain stud name,marks etc

Need to start weblogic using ant script

Hi all, we r automating our buid process I wanted to know how to start the weblogic using command promptt or ant task to include in build XML. our server is on differdnt machine ....... plz provide suggestion it will be a great help for me thanks in advance

Video recording

I am developing a project for video recording through applet using jmf(Java media framework) package. I need to know if I can record video without jmf package using Java?Or if I can include jmf package in my jar with all its dlls.

What is the use of a machine in weblogic?

How to get bookmarks from firefox using Java

How to get bookmarks from firefox using Java.I want to get bookmarks from firefox and store them into database.I want some sample code.

Problem with tool-tip text in applet when it run in a browser

Tool-tip text not visible when run applet in a browser in windows but it work on mac so plz provide any solution for this.

Count number of files

50,000 HTML files are in a folder on a windows machine. Among them, content of some files(not the file names) contain the sentence "sociomac-jus' follow!". Write a Java program to count the no. Of such files.

Loading server object

Can you load the server object dynamically? If so what are the 3 major steps involved in it?

Why it is not necessary to implement the method of the inner interface in the class

Explain the difference between inheritance and composition, and when/why one is preferable over the other

How to create a singly linked list without using in-built functions?

Write a program in Java that reads a text file, "in.Txt", that contains a list of integers separated by spaces. After reading the integers, the program stores them into a singly linked list and prints out the smallest integer in the list using the following recursive algorithm:1. Divide the list into...

Explain the prospect of webmethods and it's advantages.

What is the difference between weblogic 8.0 and weblogic 8.1

Given a deck of ncards unique cards, cut the deck icut cards from top and perform a perfect shuffle. A perfect shuffle begins by putting down the bottom card from the top portion of the deck followed by...

I woudld like to know how a basic/simple j2me application is complied and executed ?The process....?

How to retrive images from ms word document using Java

What are the drawbacks of multiinheritance and how interface fulfilled those draw backs..?