Patel College of Sci

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Patel College Of Sci. & Tech. Indore(M.P)Patel College Of Sci. & Tech. Indore(M.P)

session 2010session 2010

Training reportTraining report

presentationpresentation

Guided by:Mr. Praveen BhanodiyaHOD (CSE)

Submitted bySumit soni



Introduction of organization:Introduction of organization:

I have done my industrial training from DACCIT Pvt. Ltd.Which is a well known organization in indore.

Daccit was founded in 1998, work in field of softwaredevelopment.

The Organization is associated with IBM i.e. all the training

is given in the institution of IBM.



Technology choose:Technology choose:

y I choose the field of java for my work.

y Features of java:

y

Secured.y Simple.

y Platform independent .

y

Portable .y Multithreaded etc.



Topics of java I learn in my sessionTopics of java I learn in my session

of training:of training:y Polymorphism

y Inheritance.

y Data abstraction.

y Data types

y Constructors in java.

y Method overloading, method overwriting

y Generics

y Exceptional handling

y File handling

y

Applet(AWT ,Swing ).y Collection framework.

y JDBC.

y Servlets.

y JSP.



APPLETSAPPLETS



What are applets?What are applets?

y An applet is a program written in the Java

programming language that can be included

in an HTML page, much in the same way an

image is included in a page.



Life cycle methods of applet:Life cycle methods of applet:

y All the method of applet reside inside

´Appletµ class which reside inside

´appletµ package.

y Basically there are four life cycle method

of applet beside of that other method are

also there in Applet class.



MethodsMethods

1). public void init():

y The method is use to allocate the

resources like opening a file or connecting

to database.

y The method is called only once by the

browser.



2). public void start():

The method is concern with the statements in whichrepetitive calculation is done.

For ex. Each time we maximize our window of applet the start() method is called by the browser.

3). public void stop():

The method called by browser in two scenario.

a) When we stop the applet.

b) When we minimize the window of applet.



4) public void destroy():

The method is use to release all the resources that

occupied by the applet.It is called by the applet in case of close applet ,

reload applet or restart applet.

public void paint(graphics g):It is another method written always after start()

method.

As it name suggest the method is use to paint all the

graphics in our applet.

The paint method takes as a parameter a graphics

object.



AWT (Abstract window toolkit):AWT (Abstract window toolkit):

y The AWT package represents the AbstractWindowing Toolkit, a library of classes that givegraphical capability to applets.

y To use awt in our program we must import apackage called ́ java.awt.*µ

y By using awt we are able only to developcomponents of applet however to perform

action we need event handlers.



Event Delegation Model :Event Delegation Model :

y The model is used to provide

functionality in Gui components of

applets.

y We make use of certain classes and

interfaces for provide functionality on the

components.

y The reference of component areautomatically recorded in these classes.



For ex.

Component name Event class name

1) Button ActionEvent

2)Choice ItemEvent

3)Check Box ItemEvent

4)Text Field TextEvent

5)Scroll Bar AdjustmentEvent



Listeners:Listeners:

y It provide functionality on the GUI

components.

y It is in form of XXXListener where XXX

represent event class.



Listener name Component

1) ActionListener Button

2)ItemListener Choice

3)ItemListener Check Box

4)TextListener Text Field

5)AdjustmentListener Scroll Bar



Listener interface for components:Listener interface for components:

y These are pure abstract method given by

sun Microsystems.

y To provide functionality we have to write

the required block of statements in these

interfaces.



Component name Undefined method or default method

name

1)Button public void actionPerformed(Action Eventae)

2)Choice public void itemState(Item event ie)

3)Check Box public void itemState(item event ie)

4)Text Fieldpublic void actionPerformed(Action eventae)

5)Scroll Bar public voidadjustmentValueChanged(AdjustmentEven

t ae)



Basic steps to write applet program:Basic steps to write applet program:

1)Import all the required packages in the

program.

2) Create required components. Also set

size or color as per requirement.

3)Redefine there referencing methods.



Execution:Execution:

There are two ways to execute a applet

program:

1)The basic way is to write an HTML code

for the program and execute directly

through the web browser.

For this we need to call the name of thatclass in the HTML code.



2) As java is a platform independent

language therefore the developers of java

provide a feature in jdk for execution

applet.For this we need to write some statement

in the program.

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