Java 21 day class for beginners | Day 1

Just come with empty mind here .I will insert into your brain side about all Java basic within 21 days .

So our first day .........

Is start now :)


Day 1 :

Today we learn about the basic introduction of Java and  what Java is, why it’s cool, and how to get the
software. You’ll also create your first Java applications and applets.

Simply

What is Java ?

Java is an object-oriented programming language developed by Sun Micro systems.



Need to learn about Hot Java ?

                                 

Yes we need to learn about hotjava to .Because its using at HTML webpage making time more .

Hot Java is the first World Wide Web Browser to be able to play Java applets .
 HotJava was the first World Wide Web browser


What is applets ?

Applets can be used to create animations,

figures, or areas that can respond to input from the reader, games, or other interactive effects on
the same Web pages among the text and graphics.


Platform-independence is a program’s capability of moving easily from one computer
system to another.





Bytecodes are a set of instructions that looks a lot like some machine codes, but that is not
specific to any one processor.


Process :

Java Development Process have two steps mainly :

1 -Java compiler

2-Java interpreter 





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Day 1 is the basic introduction: what Java is, why it’s cool, and how to get the
software. You’ll also create your first Java applications and applets.
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n On Day 2, you’ll explore basic object-oriented programming concepts as they apply to
Java.
n On Day 3, you start getting down to details with the basic Java building blocks: data
types, variables, and expressions such as arithmetic and comparisons.
n Day 4 goes into detail about how to deal with objects in Java: how to create them,
how to access their variables and call their methods, and how to compare and copy
them. You’ll also get your first glance at the Java class libraries.
n On Day 5, you’ll learn more about Java with arrays, conditional statements. and
loops.
n Day 6 is the best one yet. You’ll learn how to create classes, the basic building blocks
of any Java program, as well as how to put together a Java application (an application
being a Java program that can run on its own without a Web browser).
n Day 7 builds on what you learned on Day 6. On Day 7, you’ll learn more about how
to create and use methods, including overriding and overloading methods and
creating constructors.