This document provides a comprehensive overview of Java programming, detailing its history, features, and design goals. It emphasizes Java's platform independence and applications across different devices, discussing notable versions from its inception in 1995 to more recent releases. Additionally, it introduces the use of NetBeans IDE for developing Java applications, outlining step-by-step instructions for creating and executing Java programs.

1. JAVA

2. MODULE
JAVA

4. TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE
ICT 12

5. LESSON 1- JAVA
PROGRAMMING
OBJECTIVES:
At the end of the lesson the learners will able to:
§ Describe the history of Java
§ Explain the design goals behind Java
§ Identify various Java versions
TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE

6. Introduction to
Java • Java is a general-purpose and
object-oriented programming language
developed for the distributed environment
and software development for consumer
electronic devices such as TVs, VCRs,
toasters, etc.
• Java Programming Language is a
platform-independent language, which
means there is no limitation to
any particular hardware or operating
system. It provides users the facility
to ‘write once, run anywhere’.
TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE

7. History of
Java
• Java first appeared in the
year 1995 as Oak. They also
decided to call this language
the project Green, before it
could find its popularity as Java
by finding its roots in coffee,
which in turn is attributed to Java-
an island in Indonesia.
TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE

8. History of
Java
• The first version 1.0 of Java came in 1996
when Sun Microsystems promised the principle of WORA (Write Once, Run
Anywhere) property.
• Then Java 2 (J2SE 1.2) was introduced in December 1998-1999. J2EE(Java
Enterprise Editions) was for enterprise applications.
• In 2006, Sun renamed new J2 versions as Java EE, Java ME, and Java SE.
• September 2018 marked the release of Java SE 11 (LTS).
• March 2019 marked the release of Java SE 12 (LTS).
• On September 10th, 2019, Java SE 13 was released.
• Java SE 14 came in March 2020, which is the latest version of Java.
TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE

9. FEATURES OF
JAVA
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TOPIC ONE TOPIC TWO TOPIC THREE TOPIC FOUR TOPIC FIVE

10. MEMBERS
CHRISTINE MICHELLE MERRIC NATHANIEL LINDSAY

11. DESIGN GOALS BEHIND
JAVA LANGUAGE
• Simple, Object- Oriented , and Familiar
Object-oriented programming (“OOP” for short)
was conceived to model real-world object. In OOP,
a class defines the common variables (attributes)
and methods (functions) of objects. An object is a
instance of a class. For example, all human have
common attribute: name, age birthday, etc: and
function getting old or growing up.

12. ROBUST AND
SECURE
Java has a certain degree of fault-
tolerance, which is a property that allows a
platform to continue to function in the event
of a failure or an error. Java also has good
exception handling when running your
program. Even after you compile your
program, the Java Virtual Machine perform
security checks when executing the code.

13. Architecture Neutral
and Portable
The Java API is the component that allows you
to write your program. The Java API can be used with
Integrated Development Environments (IDEs) such as Net
Beans, Eclipse, and Blue J to make programming languages
before once you compile your program, you should be able to
run it right away on your computer as an executable file. With
Java, the compiler generates “bytecode” file which is an
architecture neutral format used to transport code across
various hardware and software platforms, and even various
versions of the java programming language.

14. JAVA CODE WRITTEN CAN
BE EXECUTED ALMOST
ANYWHERE
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High Performance
High Performance
Computing (HPC) are
application that aim to solve
complex computational
problems. Certain
Characteristics of Java make
it an ideal candidate to
program high performance
computing application.
Since hardware advancement
keep on moving forward, having
the latest and faster hardware
help HPC applications must then
be portable to adapt to constant
hardware upgrades. HPC
applications are normally
running within a network or via
distributed computing and Java
has built-in support for
distributed system. ​

16. INTERPRETED,
THREADED,
AND DYNAMIC
By “interpreted,” we refer to how the Java
bytecodes are interpreted by the Java Virtual
Machine regardless of the hardware and software
platforms Java’s interpreted nature has been
discussed earlier but one of the benefits of having
an interpreted language in faster
development cycle.

17. Version of Java We can learn more about what kind of
applications use Java by knowing the different
versions of Java available:
• Java Standard Edition ( JSE)- This is the default
Java version that allows us to develop applications
for desktops, servers, and small embedded
environments such as SIM cards and SMART cards.
It also provides the creation of a rich user interface.
These applications serve a small number of users at
a time.

19. LESSON 2
Objectives:
At the end of the lesson the learners will be able
to:
§ Use NetBeans IDE.
§ Explain the given sample program
YOR FIRST
JAVA
PROGRAM

20. Programming Java
with NET BEANS
NetBeans is an
integrated development environment (IDE) for Java.
NetBeans allows applications to be developed from a
set of modular software components called modules.
NetBeans runs on Windows, macOS, Linux and Solaris.
In addition to Java development, it has extensions for
other languages like PHP, C, C++, HTML5,[3] and
JavaScript. Applications based on NetBeans, including
the NetBeans IDE, can be extended by
third party developers.[4]

21. Creating Java
Programs with
NETBEANS
1. Run NETBEANS by double-clicking on
the NETBEANS icon on your desktop or from the
Start menu. After the application has loaded, create
a new project by clicking Project > New
Project.
2. New Project dialog box will appear. In
the File name field, input the name of
your project. Click Create.
3. The NETBEANS window will look similar
to the following picture. Double-click this icon
to open READ.TXT.
4.Type the appropriate information.
5. After updating README.TXT, click Class
> Close.
6. Click Edit > New Class or press Ctrl+N at the
same time.

22. Creating Java
Programs with
NETBEANS
7. Type “Welcome” as the name of the new class
then click Ok.
8.Double-click the Welcome icon to open the
Welcome class
9. Delete all the included within the editor and type
the following:
10. Click Class > Close or press Ctrl+W at the same
time.
11. Create another class and name it Main. Edit
the Main class by double-clicking the
Main icon. Delete all the text included within the
editor and type the following:

23. Executing Your
Program
Using NETBEANS
1. Right-click the Main icon and select void main
(string[] args).
2. Click Ok.
3. The terminal window of NETBEANS will
appear to show the output.
A. When a line is highlighted, it is an indication that
there is an error on that line. In this case, the error
is the letter "w” in welcome () is in lowercase. Since
the Welcome class we created has a capital letter,
it should be in uppercase as well.
B. Line 8 is highlighted but the error is not in line 8
but in the previous line - line 7. Apparently, the
previous line has no semicolon to end the
statement. There are times that the compiler may
be reporting an error on a line but the real error is
on another line. This kind of error reporting normally
happens when a semicolon is missing at the end of
a line of code.

24. Executing Your
Program
Using NETBEANS
C. Line 5 is highlighted. It seems correct but f you
look closely, the “1” (letter “1”) in println is actually
a “1” (one). When you can’t figure out the error at
times, the best thing to do is to retype your code.
Aside from the error message on the
status bar, BlueJ also provides its users with
suggestions on possible causes of the detected
error through dialog boxes which will appear if you
click the question mark. You will be eventually
taught how each command or line of code affects
your programs in the next lessons.

25. Analyzing
Welcome. Java
We started our Welcome class with
a single line comment, as seen in line 1 of
the program. A comment is read by the
Java compiler but is not executed as
a command. Any text that follows two
slash symbols (//) is considered as a single
line comment.

26. Analyzing
Welcome. Java
Line 2 defines the beginning of
the Welcome class. When you declare a class
public, it can be accessed and used by other
classes. Note that there is also an open brace
on line 3 to
indicate the start of the scope of the class.
Line 8 has the close brace which ends the
scope of the
class. To declare a class here is the syntax:

27. Analyzing
Welcome. Java
In Welcome.java, the access modifier
is Public while the class name is Welcome.
Line 4 shows the start of the
method printWelcome (). Methods or
functions are pieces of code with instructions
on how to perform an action in a program. The
syntax for
defining a method is:

28. Analyzing
Welcome. Java
In Welcome.java, void is the return type for the user-
defined method printWelcome ()-A method with
a void return type returns nothing but this does not mean
that the method doesn't do anything. In Welcome.java, the
method printWelcome () will print the words Welcome to
Java when called.
Line 6 shows how to print text in Java. The
method println () is an example of a native Java method
that displays the message inside the parenthesis on the
screen, and then the cursor is placed on the next line. If
you want your cursor to stay on the same line and go to
the next available space after printing, use the print
() method instead of println ()
Just like a class declaration, methods also use braces to
designate the start and end or a method. You can see
the braces for the method in lines 5 and 7.

29. Analyzing
Welcome. Java
Line 5 shows how an object is defined in Java. Here, the
object Greet is created. The word is user defined. (You
can even have your name in its place!). The general
syntax for defining an object in Java is:
The keyword new indicates that we are creating a new
object using a particular class. In our present program, we
are not using arguments but in the following lessons we
will learn that passing arguments can be essential for
some types of programs. For example, we can create a
program that calculates the area of a square. Our
program will contain the formula to compute the area of
a square, but whenever we use it, we need to input the
value that will be used by the formula.
The creation of objects is one of the ways that the Object
Oriented Programming (OOP)paradigm is made efficient
and unique. We will learn more about OOP concepts in

30. Analyzing
Welcome. Java
Line 6 illustrates how a method of a class is called.
If you look at the Welcome class, you’ll
notice that we declared a
method named printWelcome (). By declaring an
instance of the Welcome class (in this
case, the Greet variable is an instance of
the Welcome class, courtesy of line 5), you can execute a
method within the specific class. The basic syntax is: