Project Report Browser

8/3/2019 Project Report Browser

1/40

INDEX

1. Introduction2. Literature Review3. Research Questions And Hypothesis4. Software Requirement Specification And Technology Used5. Research Design And Methodology6. Outcome And Significance7. References


2/40

INTRODUCTION

Web browser is a software application used to locate and display Web pages. The

two most popular browsers are Microsoft Internet Explorer and Firefox. Both of

these are graphical browsers, which mean that they can display graphics as well as

text. In addition, most modern browsers can present multimedia information,

including sound and video, though they require plug-ins for some formats.

A web browser or Internet browser is a software application for retrieving,

presenting, and traversing information resources on the World Wide Web. An

information resource is identified by a Uniform Resource Identifier (URI) and may

be a web page, image, video, or other piece of content. Hyperlinks present in

resources enable users to easily navigate their browsers to related resources.

Although browsers are primarily intended to access the World Wide Web, they can

also be used to access information provided by Web servers in private networks or

files in file systems. Some browsers can be also used to save information resourcesto file systems.

The primary purpose of a web browser is to bring information resources to the

user. This process begins when the user inputs a Uniform Resource Identifier

(URI), for example http://en.wikipedia.org/, into the browser. The prefix of the

URI determines how the URI will be interpreted. The most commonly used kind of

URI starts with http: and identifies a resource to be retrieved over the Hypertext

Transfer Protocol (HTTP)

In the case of http, https, file, and others, once the resource has been retrieved theweb browser will display it. HTML is passed to the browser's layout engine to be

transformed from markup to an interactive document. Aside from HTML, web

browsers can generally display any kind of content that can be part of a web page.

Most browsers can display images, audio, video, and XML files.


3/40

Information resources may contain hyperlinks to other information resources. Each

link contains the URI of a resource to go to. When a link is clicked, the browser

navigates to the resource indicated by the link's target URI, and the process ofbringing content to the user begins again.

Web browsers have these user interface elements in common.

Back and forward buttons to go back to the previous resource and forwardagain.

A refresh or reload button to reload the current resource. A stop button to cancel loading the resource. In some browsers, the stop

button is merged with the reload button.

A home button to return to the user's home page

An address bar to input the Uniform Resource Identifier (URI) of the desiredresource and display it.


4/40

LITERATURE REVIEW

1. WorldWideWeb: Tim Berners-Lee wrote the first web browser on aNeXT computer, called WorldWideWeb, finishing the first version on

Christmas day, 1990. He released the program to a number of people at

CERN in March, 1991, introducing the web to the high energy physicscommunity, and beginning its spread.

2. Libwww : Berners-Lee and a student at CERN named Jean-FrancoisGroff ported the WorldWideWeb application from the NeXT

environment to the more common C language in 1991 and 1992, calling

the new browser libwww. Groff later started the first web design

company, InfoDesign.ch.

3. Line-mode: Nicola Pellow, a math student interning at CERN, wrote aline-mode web browser that would work on any device, even a teletype.

In 1991, Nicola and the team ported the browser to a range of computers,

from UNIX to Microsoft DOS, so that anyone could access the web, atthat point consisting primarily of the CERN phone book.

4. ViolaWWW: Pei Wei, a student at the University of California atBerkeley, released the second browser for Unix, called ViolaWWW, in

May, 1992. This browser was built on the powerful interpretive language

called Viola that Wei had developed for Unix computers. ViolaWWW

had a range of advanced features, including the ability to display graphics

and download applets.


5/40

5. Midas: During the summer of 1992, Tony Johnson at SLAC developed athird browser for Unix systems, called Midas, to help distribute

information to colleagues about his physics research.

6. Samba: Robert Cailliau started development of the first web browser forthe Macintosh, called Samba. Development was picked up by Nicola

Pellow, and the browser was functional by the end of 1992.

7. Mosaic: Marc Andreessen and Eric Bina from the NCSA released thefirst version of Mosaic for X-Windows on Unix computers in February,

1993. A version for the Macintosh was developed by Aleks Totic and

released a few months later, making Mosaic the first browser with cross-platform support. Mosaic introduced support for sound, video clips,

forms support, bookmarks, and history files, and quickly became the

most popular non-commercial web browser. In August, 1994, NCSA

assigned commercial rights to Mosaic to Spyglass, Inc., which

subsequently licensed the technology to several other companies,

including Microsoft for use in Internet Explorer. The NCSA stoppeddeveloping Mosaic in January 1997.

8. Arena : In 1993, Dave Raggett at Hewlett-Packard in Bristol, England,developed a browser called Arena, with powerful features for positioningtables and graphics.

9. Opera : In 1994, the Opera browser was developed by a team ofresearchers at a telecommunication company called Telenor in Oslo,

Norway. The following year, two members of the team -- Jon Stephenson

von Tetzchner and Geir Ivarsy -- left Telenor to establish OperaSoftware to develop the browser commercially. Opera 2.1 was first made

available on the Internet in the summer of 1996.
http://www.livinginternet.com/w/wi_slac.htmhttp://www.livinginternet.com/w/wi_slac.htm


6/40

10.Navipress : In February, 1994, Navisoft released a browser for the PCand Macintosh called Navipress. This was the first browser since

Berners-Lee's WorldWideWeb browser that incorporated an editor, so

that you could browse and edit content at the same time. Navipress later

became AOLPress, and is still available but has not been maintained

since 1997.

11.Mozilla : In October, 1994, Netscape released the the first beta versionof their browser, Mozilla 0.96b, over the Internet. On December 15, the

final version was released, Mozilla 1.0, making it the first commercial

web browser. An open source version of the Netscape browser was

released in 2002 was also named Mozilla in tribute to this early version,and then released as the quickly popular FireFox in November, 2004.

12.Apple's Safari : It had its first beta release in January 2003; as ofOctober 2009, it has a dominant share of Apple-based Web browsing,

accounting for just under 5% of the entire browser market as of April

2010. Its rendering engine, called Webkit, is also running in the standard

browsers of several mobile phone platforms, including the iPhone OS,

Google Android, Nokia S60 and Palm WebOS.

13.Google Chrome : It first released in September 2008. As of April 2010,it has a 7% usage share.


7/40

RESEARCH QUESTIONS AND HYPOTHESIS

Definition of web browser:

A web browser or Internet browser is a software application for retrieving,

presenting, and traversing information resources on the World Wide Web. The

browser application retrieves or fetches code, usually written in HTML (HyperText

Markup Language) and/or another language, from a web server, interprets this

code, and renders (displays) it as a web page for you to view. In the majority of

cases, user interaction is needed to tell the browser what web site or specific web

page he or she would like to view. One way this is done is via the browser's

address bar.

Working of Web Browser:

When you type a web page address such as www.wikipedia.org into your browser,

that web page in its entirety is not actually stored on a server ready and waiting to

be delivered. In fact each web page that you request is individually created inresponse to your request.

You are actually calling up a list of requests to get content from various resource

directories or servers on which the content for that page is stored. It is rather like a

recipe for a cake - you have a shopping list of ingredients (requests for content)

that when combined in the correct order bakes a cake (the web page). As soon as

you move to another page, the page that you have just viewed disappears. This is

the dynamic nature of websites.


8/40

SOFTWARE REQUIREMENT SPECIFICATION

4. 1Introduction

4.1.1) Purpose

4.1.2) Scope...

4.1.3) Acronyms and Abbreviations..

4.1.4) Definitions:..

4.1.5) Overview:....

4.2 Overall Description

4.2.1) Product Perspective: ...

4.2.2) User Characteristics:........4.2.3) Principal Actor:

4.2.4) General Constraints:....

4.2.5) Assumptions and Dependencies:.....

4.3 Specific Requirements

4.3.1) Functional Requirements:....

4.3.2) Hardware Requirements:..4.3.3) Design Constraints:..

4.4 Future Extensions

4.5 Appendix


9/40

4.5.1) Screen Shot:..

4.5.2) Coding:.

4.1 INTRODUCTION4.1.1 PURPOSE:

The intention of our project is to design a Web Browser. A web browser is a

software application for retrieving, presenting, and traversing information

resources on the World Wide Web. An information resource is identified by a

Uniform Resource Identifier (URI) and may be a web page, image, video, or other

piece of content. Hyperlinks present in resources enable users to easily navigate

their browsers to related resources.

4.1.2SCOPE:The browsers main functionality is to present the web resource you choose,

by requesting it from the server and displaying it on the browser window.

It helps retrieve the information from its vast reservoir viz. internet. It allows

collaborators in remote sites to share their ideas and all aspects of a common

project. Browser progressively renders the page onto the screen as specifiedby its HTML, Cascading Style Sheets (CSS), or other page composition

languages. Any images and other resources are incorporated to produce the

on-screen web page that the user sees. Browser provide common tools

enabling users to interact with remote servers in secure fashion.

4.1.3ACRONYMS AND ABBREVIATIONS:IEEE: Institute of Electrical and Electronics Engineers

GUI: Graphical User Interface

SRS: Software Requirement Specification

WWW: World Wide Web


10/40

URI: Uniform Resource Identifier

HTTP: Hyper Text Transfer Protocol

HTML: Hyper Text Markup Language

CSS: Cascading Style Sheets

4.1.4DEFINITIONS:Web Browser: It is a software application for retrieving, presenting, and

traversing information resources on the World Wide Web

HTTP: The Hypertext Transfer Protocol is a networking protocol for

distributed, collaborative, hypermedia information systems. HTTP is the

foundation of data communication for the World Wide Web.

HTML:It is the predominant markup language for web pages. HTML is the

basic building-blocks of web pages. A markup language is a set of markup

tags, and HTML uses markup tags to describe web pages.

URL: a Uniform Resource Locator is a Uniform Resource Identifier (URI)

that specifies where an identified resource is available and the mechanism

for retrieving it.

4.1.5OVERVIEW:The rest of SRS is organized as follows: Section 2 gives an overall

description of the software. It gives what level of proficiency is expected by

the user, some general constraints while making the software and some

assumption and dependencies that are assumed.

Section 3 gives specific requirements which the software is expected to

deliver. Functional requirements are given by various use cases. Some

performance requirements and design constraints are also given.

Section 4 gives possible future extension of the system.

2. OVERALL DESCRIPTION


11/40

4.2.1 PRODUCT PERSPECTIVE:

The web browser developed here performs the following. When you type a

web page address such as www.wikipedia.org into your browser, that web

page in its entirety is not actually stored on a server ready and waiting to be

delivered. In fact each web page that you request is individually created in

response to your request. The web page is searched and then displayed on

your screen.

4.2.2 USER CHARACTERISTICS:

The user is expected to have basic computational knowledge. He must be

able to communicate well in English. He must know how to operate a

computer and it basic input/output devices.

4.2.3 PRINCIPAL ACTORS:

The principal actor in the browser is the user only.

4.2.4 GENERAL CONSTRAINTS:

The browser may sometimes give unintelligible responses due to the

limitation of its languages supported. The browser can display only plain

HTML files.

4.2.5 ASSUMPTIONS AND DEPENDENCIES:

Here we assume that the person who is using the browser knows well how to

operate a computer and also how to work on internet. We also assume that

the internet connection is available.

4.3SPECIFIC REQUIREMENTS:

4.3.1 FUNCTIONAL REQUIREMENTS:

Use Case 1: Installation


12/40

Primary Actor: User

Pre Condition: The installation team is available.

Main Scenario:

User initiates web browser installation program. System searches for the home directory in which all the working

files were created.

System creates the working files in the specified home directory. Working files contain:

1. Authorization information.

Alternate Scenario:

The system doesnt meets the requirements. Installation aborted.

4.3.2 PERFORMANCE REQUIREMENTS:

Should run on 2.4 GHz 128 MB machine with at least 1 GB freedisk space.

The data retrieval is very fast.

4.3.3 DESIGN CONSTRAINTS:

One thing to keep in mind while requesting any default htmlfile,is that, there has to be a backslash(/) at the end of the url,

for eg. "www.microsoft.com

It can work only on windows. It cannot understand slangs.

4.3.4 EXTERNAL INTERFACE REQUIREMENTS:

The various user screens are shown in the appendix.


13/40

4.4 FUTURE EXTENSIONS:

Various plug ins may be added to it such as a media player, dictionary,Google search, etc.

It may be extended to support more than just plain HTML files such asJSP, PDF,etc.

Various Graphical signs and/or symbols can be incorporated to make itmore realistic.

4.5 APPENDIX:

4.5.1 Screen Shot:

The Screens would look like this:


14/40

No URL Entered

Internet Connection Not Available

Content Of Menu


15/40

Open Option

Save Option


16/40


17/40

4.5.2 Coding:

import java.awt.*;

import java.awt.event.*;

import java.net.*;

import java.util.*;

import javax.swing.*;

import javax.swing.event.*;

import javax.swing.text.html.*;

import java.io.*;

// The Web Browser.

public class Cruiser extends JFrame

implements HyperlinkListener

{

// These are the buttons for iterating through the page list.

private JButton backButton, forwardButton;

// Page location text field.

private JTextField locationTextField;

// Editor pane for displaying pages.

private JEditorPane displayEditorPane;

// Browser's list of pages that have been visited.


18/40

private ArrayList pageList = new ArrayList();

// Constructor for Web Browser.

public Cruiser()

{

// Set application title.

super("Browser");

// Set window size.

setSize(640, 480);

File creator=new File("UrlHistory");

creator.mkdir();

File OldFiles=new File("UrlHistory\\");

String ListOfOldFiles[] = OldFiles.list();

int NumberOfOldFiles = ListOfOldFiles.length;

for(int OldFilesCount=0; OldFilesCount< NumberOfOldFiles; OldFilesCount++)

{

File DeleteFiles=new File("UrlHistory\\" + ListOfOldFiles[OldFilesCount]);

DeleteFiles.delete();

}

// Handle closing events.

addWindowListener(new WindowAdapter()

{

public void windowClosing(WindowEvent e)


19/40


20/40

});

fileSaveMenuItem.addActionListener(new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

actionSave();

}

});

fileMenu.add(fileOpenMenuItem);

fileMenu.add(fileSaveMenuItem);

fileMenu.add(fileExitMenuItem);

menuBar.add(fileMenu);

setJMenuBar(menuBar);

// Set up button panel.

JPanel buttonPanel = new JPanel();

backButton = new JButton("< Back");

backButton.addActionListener(new ActionListener()

{


{

actionBack();

}

});


21/40

backButton.setEnabled(false);

buttonPanel.add(backButton);

forwardButton = new JButton("Forward >");

forwardButton.addActionListener(new ActionListener()

{


{

actionForward();

}

});

forwardButton.setEnabled(false);

buttonPanel.add(forwardButton);

locationTextField = new JTextField(35);

locationTextField.addKeyListener(new KeyAdapter()

{

public void keyReleased(KeyEvent e)

{

if (e.getKeyCode() == KeyEvent.VK_ENTER)

{

actionGo();

}

}

});

buttonPanel.add(locationTextField);

JButton goButton = new JButton("GO");


22/40

goButton.addActionListener(new ActionListener()

{


{

actionGo();

}

});

buttonPanel.add(goButton);

// Set up page display.

displayEditorPane = new JEditorPane();

displayEditorPane.setContentType("text/html");

displayEditorPane.setEditable(false);

displayEditorPane.addHyperlinkListener(this);

getContentPane().setLayout(new BorderLayout());

getContentPane().add(buttonPanel, BorderLayout.NORTH);

getContentPane().add(new JScrollPane(displayEditorPane),

BorderLayout.CENTER);

}

//Oen files in this program

private void actionOpen()

{

TextArea textarea;

String FileGoGetter;


23/40

int SCROLLBARS_VERTICAL_ONLY = 1;

textarea =new TextArea("",10,50,SCROLLBARS_VERTICAL_ONLY);

textarea.setEditable(false);

String Disintegrator=textarea.getText();

String directory;

int DisintegratorLength=Disintegrator.length();

textarea.replaceText("",0,DisintegratorLength);

Frame OpenFrame=new Frame("open");

FileDialog filedialog=new FileDialog(OpenFrame,"Open",0);

filedialog.show();

directory=filedialog.getDirectory();

FileGoGetter=filedialog.getFile();

try

{

int FileOnDiskSize;

String FileOnDiskReader;

InputStream FileOnDisk=new FileInputStream(directory+FileGoGetter);

OutputStream FileOnDiskSaver=new FileOutputStream("UrlHistory\\parag.html");

while((FileOnDiskSize = FileOnDisk.read()) != -1)

{

FileOnDiskSaver.write((char)FileOnDiskSize);

}

BufferedReader FileOnDiskWriter = new BufferedReader(new FileReader("UrlHistory\\parag.html"));

while((FileOnDiskReader = FileOnDiskWriter.readLine())!= null)

{


24/40

textarea.append(FileOnDiskReader);

}

}

catch(IOException io)

{

}

}

//Saves file

private void actionSave()

{

int SavedFileReaderCount,increment=0;

String p=new String();

Frame SaveFrame=new Frame("frames");

FileDialog SaveFileDialog=new FileDialog(SaveFrame,"Save",1);

SaveFileDialog.show();

String SavedFileName;

String SavedFileDirectory;

SavedFileDirectory=SaveFileDialog.getDirectory();

SavedFileName=SaveFileDialog.getFile();

try

{

FileInputStream SavedFileReader=new FileInputStream("UrlHistory\\one"+increment+".html");

FileOutputStream SavedFileWriter=new FileOutputStream(SavedFileDirectory+SavedFileName);

while(( SavedFileReaderCount= SavedFileReader.read())!= -1)


25/40

{

SavedFileWriter.write((char)SavedFileReaderCount);

}

}

catch(IOException io)

{

}

}

// Exit this program.

private void actionExit()

{

System.exit(0);

}

// Go back to the page viewed before the current page.

private void actionBack()

{

URL currentUrl = displayEditorPane.getPage();

int pageIndex = pageList.indexOf(currentUrl.toString());

try

{

showPage(new URL((String) pageList.get(pageIndex - 1)), false);

}

catch (Exception e) {}

}


26/40


27/40

// Show dialog box with error message.

private void showError(String errorMessage)

{

JOptionPane.showMessageDialog(this, errorMessage,"Error", JOptionPane.ERROR_MESSAGE);

}

// Verify URL format.

private URL verifyUrl(String url)

{

// Only allow HTTP URLs.

if (!url.toLowerCase().startsWith("http://"))

return null;

// Verify format of URL.

URL verifiedUrl = null;

Try

{

verifiedUrl = new URL(url);

}

catch (Exception e)

{

return null;

}

return verifiedUrl;

}


28/40

/* Show the specified page and add it to

the page list if specified. */

private void showPage(URL pageUrl, boolean addToList)

{

setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));

try

{

// Get URL of page currently being displayed.


// Load and display specified page.

displayEditorPane.setPage(pageUrl);

// Get URL of new page being displayed.

URL newUrl = displayEditorPane.getPage();

// Add page to list if specified.

if (addToList)

{

int listSize = pageList.size();

if (listSize > 0)

{

int pageIndex =pageList.indexOf(currentUrl.toString());

if (pageIndex < listSize - 1)

{

for (int i = listSize - 1; i > pageIndex; i--)

{


29/40


30/40

/* Update back and forward buttons based on

the page being displayed. */

private void updateButtons()

{

if (pageList.size() < 2)

{

backButton.setEnabled(false);

forwardButton.setEnabled(false);

}

Else

{


int pageIndex = pageList.indexOf(currentUrl.toString());

backButton.setEnabled(pageIndex > 0);

forwardButton.setEnabled(

pageIndex < (pageList.size() - 1));

}

}

// Handle hyperlink's being clicked.

public void hyperlinkUpdate(HyperlinkEvent event)

{

HyperlinkEvent.EventType eventType = event.getEventType();

if (eventType == HyperlinkEvent.EventType.ACTIVATED)

{


31/40

if (event instanceof HTMLFrameHyperlinkEvent)

{

HTMLFrameHyperlinkEvent linkEvent =(HTMLFrameHyperlinkEvent) event;

HTMLDocument document =(HTMLDocument) displayEditorPane.getDocument();

document.processHTMLFrameHyperlinkEvent(linkEvent);

}

Else

{

showPage(event.getURL(), true);

}

}

}

// Run the Browser.

public static void main(String[] args)

{

Cruiser browser = new Cruiser();

browser.show();

}

}


32/40

TECHNOLOGY USED

Java is a programming language originally developed by James Gosling at SunMicrosystems and released in 1995 as a core component of Sun Microsystems'

Java platform. The language derives much of its syntax from C and C++ but has a

simpler object model and fewer low-level facilities. Java applications are typically

compiled tobytecode(class file) that can run on any Java Virtual Machine (JVM)

regardless of computer architecture. Java is a general-purpose, concurrent, class-

based, object-oriented language that is specifically designed to have as few

implementation dependencies as possible. It is intended to let application

developers "write once, run anywhere". Java is currently one of the most popular

programming languages in use, and is widely used from application software to

web applications.

Features of Java:

Platform Independent:The concept of Write-once-run-anywhere (known as the Platform independent) is

one of the important key feature of java language that makes java as the most

powerful language. Not even a single language is idle to this feature but java is

more closer to this feature. The programs written on one platform can run on any

platform provided the platform must have the JVM.

SimpleThere are various features that makes the java as a simple language. Programs are

easy to write and debug because java does not use the pointers explicitly. It is

much harder to write the java programs that can crash the system but we can not

say about the other programming languages. Java provides the bug free system due

to the strong memory management. It also has the automatic memory allocation

and deallocation system.
http://en.wikipedia.org/wiki/Java_bytecodehttp://en.wikipedia.org/wiki/Java_bytecodehttp://en.wikipedia.org/wiki/Java_bytecodehttp://en.wikipedia.org/wiki/Java_bytecode


33/40

Object Oriented:

To be an Object Oriented language, any language must follow at least the four

characteristics.

Inheritance : It is the process of creating the new classes and using thebehavior of the existing classes by extending them just to reuse the existing

code and adding the additional features as needed.

Encapsulation: It is the mechanism of combining the information andproviding the abstraction.

Polymorphism: As the name suggest one name multiple form,Polymorphism is the way of providing the different functionality by thefunctions having the same name based on the signatures of the methods.

Dynamic binding : Sometimes we don't have the knowledge of objects abouttheir specific types while writing our code. It is the way of providing the

maximum functionality to a program about the specific type at runtime.

RobustJava has the strong memory allocation and automatic garbage collection

mechanism. It provides the powerful exception handling and type checking

mechanism as compare to other programming languages. Compiler checks the

program whether there any error and interpreter checks any run time error andmakes the system secure from crash. All of the above features makes the java

language robust.

DistributedThe widely used protocols like HTTP and FTP are developed in java. Internet

programmers can call functions on these protocols and can get access the files fromany remote machine on the internet rather than writing codes on their local system.

Portable

The feature Write-once-run-anywhere makes the java language portable providedthat the system must have interpreter for the JVM. Java also have the standard data

size irrespective of operating system or the processor. These features makes thejava as a portable language.

DynamicWhile executing the java program the user can get the required files dynamically


34/40

from a local drive or from a computer thousands of miles away from the user justby connecting with the Internet.

SecureJava does not use memory pointers explicitly. All the programs in java are run

under an area known as the sand box. Security manager determines the

accessibility options of a class like reading and writing a file to the local disk. Java

uses the public key encryption system to allow the java applications to transmit

over the internet in the secure encrypted form. The bytecode Verifier checks theclasses after loading.

PerformanceJava uses native code usage, and lightweight process called threads. In the

beginning interpretation of bytecode resulted the performance slow but the

advance version of JVM uses the adaptive and just in time compilation techniquethat improves the performance.

MultithreadedAs we all know several features of Java like Secure, Robust, Portable, dynamic etc;

you will be more delighted to know another feature of Java which is

Multithreaded.Java is also a Multithreaded programming language. Multithreading means a single

program having different threads executing independently at the same time.

Multiple threads execute instructions according to the program code in a process or

a program. Multithreading works the similar way as multiple processes run on onecomputer.

Multithreading programming is a very interesting concept in Java. In multithreaded

programs not even a single thread disturbs the execution of other thread. Threads

are obtained from the pool of available ready to run threads and they run on the

system CPUs. This is how Multithreading works in Java which you will soon come

to know in details in later chapters.

InterpretedWe all know that Java is an interpreted language as well. With an interpreted

language such as Java, programs run directly from the source code.

The interpreter program reads the source code and translates it on the fly into

computations. Thus, Java as an interpreted language depends on an interpreter

program.


35/40


36/40

RESEARCH DESIGN AND METHODOLOGY

Working of a Web Browser


37/40

Structure of a Web Browser


38/40

HARDWARE AND SOFTWARE REQUIREMENTS

I/O REQUIREMENTSKeyboard Standard

Mouse Standard

Monitor VGA or XVGA

CD-ROM 4X or above

PROCESS REQUIREMENTS

Processor Intel Pentium III 600 MHz or above

RAM 128 MB or above

STORAGE REQUIREMENTS

Hard disk 2 GB or above

CONTROL REQUIREMENTS

Operating system Windows 98 SE or above

Software JDK version 1.1.3 or higher and SWINGAPI(Swing 0.2 or higher


39/40

SIGNIFICANCE AND OUTCOME

There are a number of advantages to be derived from a browser that is written

in Java as opposed to a language compiled into native code, namely:

Security.- In principle, a Java program is less susceptible to certain types ofvulnerabilities such as a buffer overflow attack. Java's security model can

also allow web content to have access to a complex set of APIs.

Extensibility.- A Java-based application can be extended via powerfulcross-platform plug-in.

New paradigms.- With the help of Java we can implement new powerfulcross-platform and secure mechanisms to represent web content.

Portability.- This is the obvious advantage of a pure Java application. The browser main functionality is to present the web resource you choose,

by requesting it from the server and displaying it on the browser window.

It helps retrieve the information from its vast reservoir viz. internet. It allows collaborators in remote sites to share their ideas and all aspects of

a common project.

Browser progressively renders the page onto the screen as specified by itsHTML, Cascading Style Sheets (CSS), or other page composition languages.

Any images and other resources are incorporated to produce the on-screen

web page that the user sees.

Browser provide common tools enabling users to interact with remoteservers in secure fashion.


40/40

REFERENCE LIST

1. Jacobs, Ian; Walsh, Norman (15 December 2004). "URI/ResourceRelationships".Architecture of the World Wide Web, Volume One. World

Wide Web Consortium. Retrieved 30 June 2009.

2. Stewart, William. "Web Browser History". Retrieved 5 May 2009.3. Searchenginejournal.com4. Hitslink.com5. "The SeaMonkey Project". Mozilla Foundation. 7 November 2008.

Retrieved 30 June 2009.

6. "Cyberdog: Welcome to the 'doghouse!". 5 July 2009. Retrieved 30 June2009.

7. Teelucksingh, Dev Anand. "Interesting DOS programs". Opus Networkx.Retrieved 30 June 2009.

8. Andersen, Starr; Abella, Vincent (15 September 2004). "Part 5: EnhancedBrowsing Security". Changes to Functionality in Microsoft Windows XP

Service Pack 2. Microsoft. Retrieved 30 June 2009.

9."Pop-up blocker". Mozilla Foundation. Retrieved 30 June 2009.10.

"Safari: Using The Pop-Up Blocker".Mac Tips and Tricks. WeHostMacs.

2004. Retrieved 30 June 2009.

11."Simple settings". Opera Tutorials. Opera Software. Retrieved 30 June2009.

12.Bokma, John. "Mozilla Firefox: RSS and Live Bookmarks". Retrieved 30June 2009.

13."RSS newsfeeds in Opera Mail". Opera Software. Retrieved 30 June 2009.14."About Browsers and their Features". SpiritWorks Software Development.

Retrieved 5 May 2009.

Documents

Project Report Browser