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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.
How can we define a computer screen? A computer screen is define as use to display output of computer to the user. Computer screen is consists of pixels.
The Java programming language is object-oriented and includes automatic garbage collection. Garbage collection is the process of reclaiming memory taken up by unreferenced objects.
What do you mean by casting ?
What Is a Socket in Java Networking and RMI? Ans) A socket is one end-point of a two-way communication link among two programs running on the network. A socket is bound to a por
Explain Java package and methods to use it?
How many kinds of errors can be found during a program development? List them. 1. Syntax errors 2. Semantic errors 3. Run-time errors
What should be public? What should be private? As a rule of thumb: Classes are public. Fields are private. Constructors are public. Getter and setter methods
program t ofind area under the curve y=f(x) between x=a and x=b integrate y=f(x) between the limits a and b
Describe the Class or static Members ? A method or a field in a Java program could be declared static. That means the member belongs to the class rather than to an individual
Write the hashCode() method of java.lang.Object Anytime you override equals() you should also override hashCode(). The hashCode() method should ideally return the similar int f
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