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What is an Iterator?
Some of the collection classes give traversal of their contents via a java.util.Iterator interface. This interface permits you to walk through a collection of objects, operating on every object in turn.
Remember when using Iterators that they have a snapshot of the collection at the time the Iterator was obtained; generally it is not advisable to modify the collection itself whereas traversing an Iterator.
Struts is a set of cooperating classes, servlets, and JSP tags that make up a reusable MVC 2 design. ? JavaBeans components for managing application state and behavior. ? Eve
Why do we need wrapper classes? It is sometimes simpler to deal with primitives as objects. Moreover most of the collection classes keep objects and not primitive data types. A
The SudCell Class A single cell in a Sudoku must clearly represent a number from 1 to 9 . But in a solver context, we need much more. It isn't enough to say "this c
What is constructor chaining and how is it achieved in Java? A child object constructor always first requires to construct its parent (which in turn calls its parent constructo
Both functions send you to a new resource like JSP, Servlet etc. Normal 0 false false false EN-US X-NONE X-NONE
Explain function arguments with the help of an example? Arguments on a function are comma separated list of data enclosed within braces. It describes interface among the web pa
Each time an object is started in Java it goes into the area of memory named as heap. The primitive variables like double and int are allocated in the stack, if they are local inst
examples of 2D arrays
How to write a program that converts US dollars into Canadian dollars.The program let the user enter an amount in US dollars and display it equivalent value in Canadian dollars whe
how to write coding for money and currency
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