Code 1

Website development for a Company

5. IMPLEMENTATION

5.1 IMPLEMENTATION:

Java Server Pages is a simple, yet powerful technology

for creating and maintaining dynamic-content web pages. Based on the Java

programming language, Java Server Pages offers proven portability, open

standards, and a mature re-usable component model.

JSP’s are designed to work within a request / response –

processing model. In a request / response model, a client sends a request message

to a server and the server responds by sending back a reply message.

Requests can come in the form of a custom protocol.

HTTP URL

FTP URL

MIDDLE TIER PROCESS:

In many systems, a middle tier serves as a link between clients

and back-end services. By using a middle tier a lot of processing can be off-loaded

form both clients (making them lighter and faster) and servers (allowing them to

focus on their mission).

One advantage of middle tier processing is simply connection

management. A set of jsp’s could handle connections with hundreds of clients, if

clients, if not thousands, while recycling a pool of expensive connections to

database servers.

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Other middle tier roles include:

Business rule enforcement

Transaction Management

Mapping clients to redundant set of servers

Supporting different types of clients such as pure HTML and java capable

clients.

INSTALLING JAVA SERVER PAGES:

JSP’s are not run in the same sense as applets and applications.

Java Server pages provide functionality that extends a server. There are many web

servers that support java server pages. It is beyond the scope of this course to

cover the different ways to install jsp’s in each server.

USING JAVA WEB SERVER:

Sun Java Web Server (JWS) is a full-featured product. Nice feature

is it’s ability to detect when a java server pages has been updated. It detects when

new class files have been copied to the appropriate public_html directory and it

necessary, automatically reloads any running Jsp pages.

Java Server Pages are installed by moving them to the

C:\Java Web Server2.0\public_html directory

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5.3 CODING

The coding step of software development is a process of transition of the

detailed design into a programming language that is ultimately transformed into

machine executable instructions. This coding depends on the proper selection of

the language and coding style of the preliminary design level specified in the design

phase.

CODING FOR SCREENS:

HOMEPAGE:

LOGIC:

This screen gives references to all other screens present in the project.

The screen is developed using html language. This is the main screen

of the project.

CODE:

<html>

<head>

<title>Narayana chips (p)Ltd.</title>

</head>

<body bgcolor=white text=black link=black vlink="black" alink=red

onLoad="fun()">

<table border=0 width=100% align=center valign=middle>

<tbody>

<tr width=100%>

<td align=center width=13%>

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<img src=ncp.gif width=50 height=70></img>

<td align=center width=60%>

<img src=logo.gif width=45 height=70></img>

<td align=center>

<input type=button name=date1 style="background:lightblue">

</tr>

</tbody>

</table>

<table border=0 width=100% align=center valign=middle>

<tbody>

<tr width=100% height=80>

<td background="home1.bmp">

<div style="position:absolute;top:125;left:210">

<a href="http://192.168.100.47:8080/prj/aboutus.html"><b>AboutUS></a>

</div>


<a href="http://192.168.100.47:8080/prj/products.html">

<b>Products</b></a>

</div>


<a href="http://192.168.100.47:8080/prj/hrd.jsp"><b>HRD</b></a>

</div>


<a href="http://192.168.100.47:8080/prj/sitemap.html">

<b>Site Map</b></a></div>

</tr>

</tbody>

</table>

<table border=0 width=100% align=center valign=middle cellspacing=0>

<tbody>

<tr width=100% height=210>

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<td width=13% background=banner.bmp>


<a href="http://192.168.100.47:8080/prj/careers.html"><b>

<font size=4>Careers</font></b></a></div>


<a href="http://192.168.100.47:8080/prj/login.html"><b>

<font size=4>Login</font></b></a></div>


<a href="http://192.168.100.47:8080/prj/search.html"><b>

<font size=4>Search</font></b></a></div></td>

<td width=80%>

<img src=globe.wmf width=615 height=220 style="z-index:-1">

<div style="position: absolute;top=250;left:590;z-index:1">

<a href=http://192.168.100.47:8080/prj/aboutus.html>

<img src=enter.gif width=50 height=50 border=0></img></a></div>

</tr>

</tbody>

</table>

</form>

</body>

</html>

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HRD SCREEN:

LOGIC:

This is the screen that displays the employees that are working in the

company. It is a jsp file. The main statements that are used in this file are

Class.forName ("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:company","user",

“pwd”);

PreparedStatement ps=con.prepareStatement ("select * from company");

ResultSet rs=ps.executeQuery ();

These statements are used for connecting to jdbc driver and to retrieve

the data from the database company.

CODE:

<html>

<head>

<title>Human Resource Department</title>

</head>

<body text=white bgcolor=Black link=yellow vlink=aqua alink=green>

<%@ page language="java" %>

<%@ page import="java.sql.*" %>

<%

PreparedStatement ps=null;

ResultSet rs=null;

Connection con=null;

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String id1=null;

String id="ID : ";

String name="NAME : ";

String address="ADDRESS : ";

try

{


con=DriverManager.getConnection("jdbc:odbc:company","batch11",

“bandi”);

ps=con.prepareStatement ("select * from company");

rs=ps.executeQuery ();

while(rs.next ())

{

out. Print ("<br/><table width=90% height=120 bgcolor=gray

align=center>

<tbody>");

out. print("<tr><td align=right width=33% valign=middle>");

id1=rs.getString (1);

out.print ("<font color=orange><b>"+id+"</b></font>

<td align=left valign=middle>

< a href='http://192.168.100.47:8080/prj/details.jsp?id="+id1+"'>

<b>"+id1+"</b></a>");

out.print("</font></tr>");

out.print("<tr><td align=right valign=middle>");

out.print("<font color=lightblue>"+name+"</font>");

out.print("<td align=left valign=middle>");

out.print("<font color=white>");

out.print(rs.getString(2));


out.print("<tr><td align=right valign=middle>");

out.print("<font color=lightblue>"+address+"</font>");

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out.print("<td align=left valign=middle>");



out.print("</font></tr></tbody></table");

out.print("<br/><br/><center>

<img src='pencil.gif'></img></center><br/>");

}

}

%>

</form>

</body>

</html>

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EXAM.JSP:

LOGIC:

This file is used to conduct the aptitude test. In this 15 questions are

displayed and these questions are retrieved randomly from the database by using

Random () function.

Random ran = new Random();

ran.nextInt(50);

The above function gives random numbers that are less than 50.

Timer is also maintained for the exam by using Script language.

Three methods are used here.

They are

1. start() ----- to start up the timer when examination is started.

2. timer() ----- to set the interval for the timer.

3. state() ----- to display the time on window status.

Code:

<html>

<head>

<title> Aptitude Test</title>

<Script language="JavaScript">

var i=899;

function timer()

{

SetInterval ("timers ()", 1000);

}

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function timers()

{

Window.Status=i;

i--; }

function state() {

window.status=900; } function start() {

setInterval("end()", 906000); }

function end() { alert("Oh! No ! Time over.");

document.Write("<tablewidth=80% align=center height=400>

<tbody>

<tr bgcolor=navy><td align=center>

<Font size=4color=yellow>

You are not qualified in the

Aptitude Test

<br/>. <br/>

<a href='http://192.168.100.47:8080/prj/homepage.html'>

<img src='home.bmp' border=0></img></a></tr></tbody></table>");

}

Window.onLoad=start();

Window.onLoad=timer();

Window.onLoad=state();

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</script>

<body>


Connection con1=DriverManager.getConnection ("jdbc:odbc:application",

"batch11", "bandi");

PreparedStatement ps2=con1.prepareStatement ("select * from

application”);

ResultSet rs2=ps2.executeQuery ();

while(rs2.next())

if((rs2.getString(3)).equals(id))

exam=rs2.getString (16);

if(exam.equals("NONE"))

{

String qry="update application set exam='YES' where

id='"+id+"'";

PreparedStatement ps1=con1.prepareStatement(qry);

ps1.executeUpdate();

for(int j=0;j<15;j++)

arr[j]=ran.nextInt(59)+1;


for(int k=0;k<15;k++)

if(arr[j]<arr[k])

{

temp=arr[j];

arr[j]=arr[k];

arr[k]=temp;

}

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if((arr[k]==arr[j]) && (k!=j))

arr[j]=arr[k]+1;

Connection con=DriverManager.getConnection ("jdbc:odbc: exam", "batch11",

"bandi");

PreparedStatement ps=con.prepareStatement ("select * from exam order by qno");


while(i<15 && rs.next())

{

f(rs.getInt(1)==arr[i]){

%>

<table width=90% align=center cellspacing=0 background=0012.jpg>

<tbody>

<tr bgcolor=lightblue height=30><td colspan=4>

<%

out.print((l+i)+". ");

out.print("<b>"+rs.getString(2)+"</b>");

%>

</tr>

</tbody>

</table>

<table width=90% align=center cellspacing=0>

<tbody>

<tr height=30><td width=25% valign=top>

<%

out.print("<input type=radio name="+(char)(c+i)+"

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value=3>"+rs.getString(3)+"    ");

%>

<td width=25% valign=top>

<%



%>


<%



%>


<%


value=6>"+rs.getString(6)+<br><br><br>");

%>

</tr></tbody></table><br/>

<%

i++;

}

}

%>

<center><input type=submit value=Finish></center></form>

<%

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}

else

{

out.print("<script language='javascript'>alert('Oh ! No, You can't Refresh or

Reload this page');</script>");

%>

<a href="http://192.168.100.47:8080/prj/homepage.html">

<img src="home.bmp" alt="home.bmp" border=0></img></a></div>

<%

}

}

%>

</body>

</html>

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RESULT.JSP:

LOGIC:

This is used to find the result of the exam. First we retrieved the

question numbers that are displayed in the test from the exam file and then getting

the answers applied by the user. By comparing these answers with original

answers, we calculate the score.

CODE:

<html>

<body>

<% page language=java>

<%

while(i<15)

{

Connection con=DriverManager.getConnection ("jdbc:odbc:exam",


PreparedStatement ps=con.prepareStatement ("select * from exam");


while(rs.next())

{

if(rs.getInt(1)==bb[i])

{

ans[i++]=rs.getString(7);

break;

}

}

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}


if(an[j]==null)

bb1[j]=8;

else

bb1[j]=Integer.parseInt(an[j]);

while(i<15 && rs4.next())

{

if(rs4.getInt(1)==bb[i])

{

if(bb1[i]==8)

an[i]=null;

else

an[i]=rs4.getString(bb1[i]);

i++;

}

}


if(ans[k].equals(an[k]))

count++;

%>

</body>

</html>

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Mailing Screen:

Logic:

Employees use this page to see the offline messages send.

The main logic is retrieving the fields from the database mail and displaying it.

CODE:

<html>

<body>

<%

out.print("<div align=right>[

<a href='http://192.168.100.47:8080/prj/logout.jsp?id="+id+"'>Logout</a>

]</div>");

%>

<br/><table width=100% align=center border=0 height=30

bgcolor=lightgreen><tbody><tr><td width=400>

<font color=red size=4>Welcome,   </font><font color=purple

size=4><u>

<%

while(rs.next()) if(rs.getString(1).equals(id))

{

%>

<tr height=40><td width=30% align=center>

<%


%>

<td width=30% align=center>

<%

String subject=rs.getString(3);

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String datetime=rs.getString(4);

out.print("<a href='http://192.168.100.47:8080/prj/message.jsp?id="+id+"

&subject="+subject+"&datetime="+datetime+"'>"+subject+"</a>");

%>

<td width=40% align=center>

<%

out.print(datetime+"</tr>");

}

%>

</tbody></table>

</body>

</html>

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COMPOSE Screen:

LOGIC:

This page is used to send mails to other employees. Sending the

mail to other employee storing the data in the database of corresponding user for

whom the mail is send.

CODE:

<html>

<head>

<title>Sending the mail</title>

</head>

<body bgcolor=black text=white background="o002.jpg" vlink=red alink=aqua

link=lightblue>

<%


<a href='http://192.168.100.47:8080/prj/logout.jsp?id="+mailfrom+"'>Logout</

a>

]</div>");

try

{


Connection con1=DriverManager.getConnection ("jdbc:odbc:

“company","batch11", "bandi");

While (rs1.next ())

if((rs1.getString(1)).equals(mailto))

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m++;

Prepared Statement ps2=con1.prepareStatement ("select * from

company");


While (rs2.next ())

if ((rs2.getString (1)). equals (mailfrom))

Password=rs2.getString (5);

if(flag==1)

{

If(m==1)

{

Connection con=DriverManager.getConnection ("jdbc:odbc: mail",


Prepared Statement ps=con.prepareStatement ("insert into mail

(mailto, mailfrom, subject, datetime, data) values (?,?,?,?,?)");

Ps.clearParameters ();

Ps.setString (1, mailto);

Ps.setString (2, mailfrom);

Ps.setString (3, subject);

Ps.setString (4, datetime);

Ps.setString (5, data);

Ps.executeUpdate ();

%>

<br/><br/><br/>

<Table width=70% height=250 align=center>

<Tbody>

<tr width=80%><td align=center><font color=blue size=6>

Message send.

</font><tr/>

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<tr width=20%>

<td align=center>

<%

out.print("<form action='http://192.168.100.47:8080/prj/logincheck.jsp'

method=post>");

out.print("<input type=hidden name=id value="+mailfrom+">");

out.print("<input type=hidden name=password value="+password+">");

%>

<input type=submit value=Return to Mail>

</form>

</tbody>

</table>

<%

}

else if(m==0)

{

out.print("<form action='http://192.168.100.47:8080/prj/compose.jsp'>

<table align=center border=0 bgcolor=lightblue width=500 height=300>

<tbody><tr align=center valign=middle><td align=center>

<font size=4 color=white>No such employee exist in the company.

<br/><br/>

<input type=hidden name=id value="+mailfrom+">

<input type=submit value=Back></font></tr></tbody></table></form>");

}

}

%>

</body>

</html>

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LEAVE.JSP:

LOGIC:

This page allows the employees to take leave by online. Each

employee has a leave of 5 days in a month. If employees has sufficient leaves then

only the leave is granted otherwise it is rejected.

CODE:

<html>

<head>

<title>Online Leave Taking</title>

</head>

<body onLoad="startclock(); timerONE=window.setTimeout" bgcolor=white

text=black background=a051.jpg>

<%


<a href='http://localhost:8080/prj/logout.jsp?id="+id+"'>Logout</a> ]</

div>");

out.print("<br/><table width=100% align=center border=0 height=30

bgcolor=lightgreen><tbody><tr><td width=400>");

out.print("<font color=red size=4>Welcome,

</font><u><font color=purple size=4>");

out.print(id+"@ncp.com");

out.print("</font></u><td align=right><input type=button name=time1

style='background:white'></tr></tbody></table>");

out.print("<hr width=100% align=center noshade color=blue/>");

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Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");

Connection con=DriverManager.getConnection("jdbc:odbc:company",


PreparedStatement ps=con.prepareStatement("select * from company");

ResultSet rs=ps.executeQuery();

while(rs.next()) if(rs.getString(1).equals(id)) leavesrem=rs.getInt(17);

%>

<table width=500 align=center valign=middle height=220 border=0><tbody>

<tr><td width=40% align=right><b>Employee ID : </b>

<%

out.print("<td><b>"+id+"</b><input type=hidden name=id value="+id+">");

out.print("</tr><tr><td align=center colspan=2><b>Your leaves remaining are

"+leavesrem+" </b></tr>");

%>

<tr>

<td width=50% align=right><b>Select how many days you want : </b>

<td>

</tr>

<tr>

<td width=40% align=right>

<b>FROM : </b>

<td><input type=text name="dayfrom">

</tr>

<tr>

<td width=40% align=right>

<b>TO : </b>

<td><input type=text name="dayto">

</tr>

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<tr>

<td width=40% align=right >

<b>Nature of leave : </b>

<td><input type=text name="cause">

</tr>

</tbody></table>

<br/><br/>

<center>

<input type=submit value="Apply Leave">

</center>

</form>

</body>

</html>

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SEARCH.JSP:

LOGIC:

This page is used to display the internal details of the employee.

The main logic is first search the given name with the names in the database.

If the match found then all the fields of that tuple is displayed.

CODE:

<html>

<head>

<title>Details of Employee</title>

</head>

<body text=lightblue bgcolor=black>

<%

while(rs.next()) if(rs.getString(2).equals(fname)) m=m+1;

if(m==0)

out.print("No one found");

if(m==1)

{

PreparedStatement ps1=con.prepareStatement("select * from company");

ResultSet rs1=ps1.executeQuery();

while(rs1.next())

{

String name=rs1.getString(2);

if(name.equals(fname))

{

%>

<center>

<h2><u>Employee Details</u></h2>

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</center>

<table width=500 height=360 align=center border=0 background=bg37.jpg><tbody>

<tr>

<td width=50% align=right height=20><font color=red

size=3>ID : </font>

<td width=50% align=left height=20><font color=white size=3><b>

<%out.print(rs1.getString(1));%>

</b></font>

</tr>

<tr>


size=3>First Name : </font>


<%out.print(name);%>

</b></font>

</tr>

<tr>


size=3>Last Name : </font>



</b></font>

</tr>

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<tr>


size=3>Father Name : </font>



</b></font>

</tr>

<tr>


size=3>Date of Birth : </font>



</b></font>

</tr>

<tr>


size=3>Gender : </font>



</b></font>

</tr>

<tr>

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size=3>Qualification : </font>



</b></font>

</tr>

<tr>


size=3>Address : </font>



</b></font>

</tr>

<tr>


size=3>Phone Number : </font>



</b></font>

</tr>

<tr>


size=3>Martial Status : </font>


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</b></font>

</tr>

<tr>


size=3>Position : </font>



</b></font>

</tr>

<tr>


size=3>Salary : </font>



</b></font>

</tr>

<tr>


size=3>Admit Date : </font>



</b></font>

</tr></tbody></table>

<%

}}}

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If more than employees has same name then their corresponding id’s are displayed.

On clicking the corresponding id their internal details are displayed.

if(m>1)

{

PreparedStatement ps2=con.prepareStatement ("select * from

company");


While (rs2.next ())

{

if(rs2.getString(2).equals(fname))

{

out.print("<br/><table width=90% height=120 bgcolor=gray

align=center><tbody>");

out.print("<tr><td width=10% height=33% align=right>");

out.println(fathername+"<td wdith=23% height=33%

align=left>

<a href='http://192.168.100.47:8080/prj/details.jsp?

Id="+rs2.getString(1)+"'>"+rs2.getString(4)+"</a>");



out.print(dob);

out.print("<td width=23% height=33% align=left>");


out.print(rs2.getString(6));



out.print(gender);



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out.print(address);




out.print("</font></tr></tbody></table");

out.print("<br/><br/><img src='pencil.gif'

align=center/><br/>");

}}}

%><br/>

<center>

<a href="http://192.168.100.47:8080/prj/homepage.html"><img src=home.bmp

border=0></img></a>

<a href="http://192.168.100.47:8080/prj/aboutus.html"><img src=aboutus.bmp

border=0></img></a>

</center>

<hr width=100% color="red">

<font face="Times New Roman" color="yellow">

</font>

</body>

</html>

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Code 1

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