If the value of a variable is varied from object to object such
type of variables are called instance variables
For every object a seperate copy of instance variable will be created
The scope of instance variables is exactly same as the scope of
the objects. Because instance variables will be created at the time of
objects creation & destroy at the time of objects destruction
Instance variables will be stored as the part of objects
Instance variables should be declare...
Wednesday, 19 June 2013
Local variables
To meet temparary requirements of the programer some times we have to
create variables inside method or block or constructor such type of variables
are called as local variables
Local variables also known as stack variables or automatic variables or temparary
variables
Local variables will be stored inside a stack
The local variables will be created while executing the block in which we
declared it & destroyed once the block completed .Hence, The...
Features of Java?
1) Simple
2) System independent
3) Object oriented
4) Distributed
5) Robust
6) Secure
7) Architecture Neutral
8) Portable
9) Interpreated
10) High performance...
Java Applications?
According to Sun Microsystems 3 billion devices run Java, currently
so many devices are using Java.Those are:
1) Desktop Applications-- Media player, Anti virus e.t.c..
2) Enterprise Applications--Banking, marketing applications
3) Embedded Systems
4) Mobile Applications
5) Robotics
6) Web applications
7) Smart cards
8) Games e.t.c.....
Why the name Java?
James gosling and his team members were consuming a lot of
coffee while developing the language. They felt that they were able to develop a
better language because of the good quality of coffee they consumed. So the coffee
had it's own role in developing this language and good quality exported to the entire
world from a place called "Java island" .Hence they fixed the name of the place
for the language as Java. And the symbol for the Java language is coffee cup and saucer.
...
History of Java?
Before starting to learn java, Let us plunge into it's history and
see how the language orginated. In 1990, Sun Microsystems inc, has conceived
a project to develop software for consumer electronic devices that could be
controlled by a remote. This project was called "Stealth Project" but later it name was
changed to Green project. In January of 1991, Bill joy, James gosling, Mike sheradin,
Patrick Naughton,...