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Shlurrrpp......Java

 

The first user-friendly tutorial on Java

 

This tutorial is a joint effort of

Mr. Vijay Mukhi
Ms. Sonal Kotecha
Mr. Shashank Tripathi
 

Please visit the original site of authors of this
tutorial where you can find a lot info on the latest technologies 
of the world, including Java

 


 

Men are amused by anything. That is why professional ice hockey is so popular. That is why Disneyland runs into lengthier balance sheets than the scientific museums. And that is why something like Java is touted as the next Glasnost (well, unless you are a snoozebucket, you are probably aware of Java, the new language that is bowling the world over). Make way. Here comes the stuff our forefathers warned us about. It is mightier than the sword, the pen and usually, the programmer. A thousand and one news-breakers and articles have done their rounds on how Java is invariably an isotope of C++ minus the warts and pimples, on how it is going to give the Internet an upbeat facelift, on how......
 

But wait. The last thing you want to do is to sit back and worship the greatness of a language that has not even reached its final stages; you want to use it. The one sad hitch with today's software is that the so-called tutorials and manuals are scarcely meant for anyone to understand. Take the samples bundled with Java for instance. How would you like the idea of brooding over a hundred-line sample code to begin with? What these codes fail to do is spark an interest among the wide-eyed newbies. ( Between you and me, I suspect that is the state-of-the-art way of doing graffitti on aspiring programmers :) ).
 

And that's precisely what we aim to do here - to give you the first few sips of Java (seasoned not to burn your tongue). Our approach is simple. As far as possible, we will add a line at a time and expect you to try it out (if we exceed that, we apologize). The worst thing that could happen by trying to learn programming in this way is that we might lead to grazing down of a few more trees (we will use more paper, right). But at least we can comprehend the language better.
 

Undoubtedly, Java has flung open a whole slew of possibilities to spruce up a page on the Internet. Every little Johnny in the world, who has anything close to a GK, knows that Java can change lives. How is the question. Before we begin, let us make a few things clear. First, to learn programming in Java, it is undoubtedly a prerequisite to have a passing knowledge of C++ or we'd rather you sit over the weekend with a load of beer and cheetos in the fridge and atleast a dozen aspirins in the drawer :) . Secondly, the programs in Java here are explained in a simple, understandable manner and hence anybody expecting a display of rhetorical caliber is in for a disappointment of his lifetime. Just like an artist's potrait speaks for itself, we'd rather have Java speak for itself too. Third, while each concept is clearly explained, we prefer to keep our distance from the 'gears and cogs' of the language. And yes, it is also assumed you have downloaded the Beta versio! n of Java. (For those who came in late, the software can be downloaded from the address http://java.sun.com ). A point to be noted here is that we have worked on Windows 95 platform, though we are told the programs work in Windows NT and Solaris environments too.

Some Conventions that we swear by

" The essence of magic is simplicity "

We are not concerned with inculcating obedience or influencing the programming style of our readers; quite the contrary, we intend the development of initiative. The simplicity that will inevitably be exhibited in our code and explanation is merely a method to refrain from pedantic. The idea is not to win a prize in computer literature but to shorten your learning curve. The naming conventions that we will adhere to include:

  • The variables that we use will be of one letter, for instance i, j, g etc.
  • The functions will be of two letters, e.g., aa() , bb() etc.
  • The class names will be three letters, e.g., zzz etc.

 


 

The Real Thing

Get yourself some reflections on Java...And then the king leered . That done, lets dive right into the real thing, head first.
 

 




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Java Lessons

The Java Lesson 1:
What is Java?
The Java Lesson 2:
Anatomy of a simple Java program
The Java Lesson 3:
Identifiers and primitive data types
The Java Lesson 4:
Variables, constants, and literals
The Java Lesson 5:
Arithmetic operations, conversions, and casts
The Java Lesson 6:
Boolean expressions and operations
The Java Lesson 7:
Bitwise operations
The Java Lesson 8:
Flow control with if and else
The Java Lesson 9:
switch statements
The Java Lesson 10:
for, while, and do-while statements
The Java Lesson 11:
Using break and continue
The Java Lesson 12:
Class methods and how they are called
The Java Lesson 13:
Using the Math class
The Java Lesson 14:
Creating and calling custom class methods
The Java Lesson 15:
Overloading class methods
The Java Lesson 16:
An introduction to objects and object references
The Java Lesson 17:
The String class
The Java Lesson 18:
The StringBuffer class
The Java Lesson 19:
Initializing and processing arrays of primitives
The Java Lesson 20:
Initializing and processing arrays of objects
The Java Lesson 23:
Inheritance and overriding inherited methods
The Java Lesson 24:
abstract classes and polymorphism
The Java Lesson 25:
Interfaces, instanceof, and object conversion and casting
The Java Lesson 26:
Introduction to graphical programming and the java.awt packa
The Java Lesson 27:
The Component class
The Java Lesson 28:
Containers and simple layout managers
The Java Lesson 29:
The Color and Font classes
The Java Lesson 30:
Drawing geometric shapes
The Java Lesson 31:
Choice, List, and Checkbox controls
The Java Lesson 32:
Using the Scrollbar graphical control
The Java Lesson 33:
Menus and submenus
The Java Lesson 34:
An introduction to applets and the Applet class
The Java Lesson 35:
Essential HTML to launch an applet and pass it parameters
The Java Lesson 36:
Mouse event processing
Java Lesson 37:
Menus and submenus
Java Lesson 38:
The WindowListener interface and the WindowAdapter class
Java Lesson 39:
An introduction to GridBagLayout
Java Lesson 40:
An introduction to the Java Collections API
Java Lesson 41:
Exception handling with try, catch, and finally blocks
Java Lesson 42:
Claiming and throwing exceptions
Java Lesson 43:
Multithreading, the Thread class, and the Runnable interface
Java Lesson 44:
An introduction to I/O and the File and FileDialog classes
Java Lesson 45:
Low-level and high-level stream classes
Java Lesson 46:
Using the RandomAccessFile class
Java Lessons by
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