Pessimistic and Optimistic concurrency control?,

Difference between an interface and an abstract class, What is the differen...

What is the difference between an Interface and an Abstract class? An abstract class can have instance methods that execute a default behavior. An Interface can only declare co

Exception handling, student application

student application

Explain java package and methods to use it, Explain Java package and met...

Explain Java package and methods to use it?

Explain identifiers in java, Explain Identifiers in Java ? Identifiers ...

Explain Identifiers in Java ? Identifiers are the names of variables, classes, methods, packages and interfaces. Unlike literals they are not the things themselves, only ways o

Calling the function, You may call function from any other place into your ...

You may call function from any other place into your JavaScript code. After the function is executed, the control goes back to other script which called it.  alert('Example 1: t

Write html and javascript code which displays a textbox, Write HTML and Jav...

Write HTML and JavaScript code which displays a textbox and button on a web page? While user enters text in the text box and clicks the button it displays in that text in the m

Write a program in javascript that will read in an xml file, Write a progra...

Write a program in Javascript that will read in an XML file. This file will contain details of devices maintained by the IT department of an organisation including an ID number, de

Difference b/w a static variable and an instance variable?, Class variables...

Class variables are named as static variables. There is only single occurrence of a class variable per JVM per class loader. When a class is operated the class variables are in

Define the life cycle methods of a servlet? , The Web container is used for...

The Web container is used for managing the servlet's life cycle. The Web container produces an instance of the servlet and then the container invokes the init() function. At the co