DAY: 1
Since java can be used to develop
all kinds of software applications it is called as programming suite.
1. JSE ModuleJava Standard Edition
2. JEE ModuleJava Enterprise
Edition
3. JME Modulejava Micro/Mobile
Edition
JSE:
v It is installable software as JDK
software.
v Latest version is:
7.0 (dolphin)
6.0(mustang)
5.0(tiger)
v This module is given to develop
stand-alone applications, Desktop applications, two-tier applications,
applets……………….
v This application that is specific to
one computer and contains main (-) method is called as
stand-alone application.
v Example: AWT Frame Window
application, swing frame window application.
Desktop Application:
v The application that contains two
layers communicating with each other is called as two-tier application.
v A layer represents logical partition
in the application having logics
v The two layers of two-tier application can be there in a
single computer (or) can be there in two different computers.
v To execute multiple java
applications parallelly (or) simultaneously from a single computer multiple JVM’s
will be activated simultaneously (or) parallelly.
v Applet is not a desktop application
it is a complied java class that can be sent over the network as web page
giving alternate to the html based form pages.
·
AWT
–Abstract window tool kit
·
Swing
·
Collection
frame work
·
Jdbc
– java database Connectivity
·
Jndi - java naming and directory
interface.
v The alternate technologies for JSE
module are VB,VB.NET,D2K(Developer2000) but these technologies based
applications are platform dependent and architecture specific where as the JSE
module based applications are architecturally neutral and platform independent.
v As of now 3 popular architectures are
there two manufacture computers. Each Architecture gives methodology and plan
of manufacturing computer.
they are
1. IBM Architecture
2. Apple Architecture
3. SUN Architecture
v The C, C++ generated .exe files not
only contains operating system related instructions but they also contains
instructions related to underlying computer Architecture due to this we can say
C, C++ languages are platform dependent and architecture specific where as java
programming language is platform independent and architecturally neutral
because the java compiler generated .class file does not contain underlying
operating System, computer architecture instructions.
DAY: 2
JEE-JAVA ENTERPRISE EDITION
·
It
is not installable software, it is given as specification.
·
Jee
specification contains rules and guide lines to develop webserver and
application server software (like tomcat, weblogic and
etc…………..).
·
Note:
working with jee nothing but working with one or other webserver or application
server software to develop the applications.
·
These
webserver, application server software’s are installable software’s.
·
For
jee module jse module is the base module
·
Using
jee module the following applications can be developed.
1. Web applications (web sites)
2. distributed applications (location transparency)
3. Enterprise applications (banking)
4. N-tier applications
·
The
applications which can provide 24/7 access to their resources using internet
environment are called as web sites.
·
The
client-server applications which provide location transparency are called as
distributed applications.
·
If
client application is able to recognize the server application location change
dynamically then it is called as location transparency.
·
A
web application/web site can be developed as distributed or non-distributed
application.
·
All
credit cards, debit card processing applications will be developed generally as
distributed applications.
·
The
large scale application that deals with complex and heavy weight business logic
by having middle ware services support is called as enterprise application.
Example: Banking application
·
The
additional services that are configurable on the applications to make
applications running perfectly in all the situations are called as middleware
services.
Example:
security services.
Transaction
management services, pooling services and etc…….
Note: middle ware services are not minimum
logics of the application. They are additional and optional logic to develop.
