Java Programs and JSP Applications for Students: January 2022

Sunday 23 January 2022

13. PHP Program to read data from MySQL table and Calculate attendance percentage

<html>
<head>
<title>Read data and update mysql table using php </title>
</head>
<body bgcolor=gray text=yellow>
<?php

$connection = mysql_connect("localhost", "root", ""); // Establish Connection with Server
$db = mysql_select_db("test", $connection); // Selecting Database
//MySQL Query to read data
$query = mysql_query("select * from prog13", $connection);
echo "<h3>Student Attendance Details</h3>";
echo "<table border=3 cellspacing=5>";
echo"<tr><th>RegNo</th><th>StudentName</th><th>Subject</th><th>ClassesHeld</th><th>ClassesAttended</th><th>AttendancePercentage</th></tr>";
while ($row = mysql_fetch_array($query))
{
   echo "<tr><td>".$row['RegNo']."</td>";
   echo "<td>".$row['StudentName']."</td>";
   echo "<td>".$row['Subject']."</td>";
   echo "<td>".$row['ClassesHeld']."</td>";
   echo "<td>".$row['ClassesAttended']."</td>";
   echo "<td>".$row['AttendancePercentage']."</td></tr>";

   $reg=$row['RegNo'];
   $CH=$row['ClassesHeld'];
   $CA=$row['ClassesAttended'];
   $per=($CA/$CH)*100;

   //Query for updation with calculated percentage.
       $query1 = mysql_query("update prog13 set AttendancePercentage='".$per."'where RegNo='".$reg."';",$connection);
   //Query to reset AttendancePercentage to zero.
       //$query1 = mysql_query("update prog13 set AttendancePercentage=0 where RegNo='".$reg."';",$connection);

}
echo "<table border=3>";
echo "<br><b>MySQL table updated successfully.</b>";
//Query for inserting values in prog13 table.
       //$query1 = mysql_query("insert into prog13 values('123','abcd','sub1',20,16,0);",$connection);
mysql_close($connection); // Closing Connection with Server
?>
</body>
</html>

13. PHP Program to read data from MySQL table and Calculate attendance percentage.

<html>
<head>
<title>Read data and update mysql table using php </title>
</head>
<body bgcolor=gray text=yellow>
<?php

$connection = mysql_connect("localhost", "root", ""); // Establish Connection with Server
$db = mysql_select_db("test", $connection); // Selecting Database
//MySQL Query to read data
$query = mysql_query("select * from prog13", $connection);
echo "<h3>Student Attendance Details</h3>";
echo "<table border=3 cellspacing=5>";
echo"<tr><th>RegNo</th><th>StudentName</th><th>Subject</th><th>ClassesHeld</th><th>ClassesAttended</th><th>AttendancePercentage</th></tr>";
while ($row = mysql_fetch_array($query))
{
   echo "<tr><td>".$row['RegNo']."</td>";
   echo "<td>".$row['StudentName']."</td>";
   echo "<td>".$row['Subject']."</td>";
   echo "<td>".$row['ClassesHeld']."</td>";
   echo "<td>".$row['ClassesAttended']."</td>";
   echo "<td>".$row['AttendancePercentage']."</td></tr>";

   $reg=$row['RegNo'];
   $CH=$row['ClassesHeld'];
   $CA=$row['ClassesAttended'];
   $per=($CA/$CH)*100;

   //Query for updation with calculated percentage.
       $query1 = mysql_query("update prog13 set AttendancePercentage='".$per."'where RegNo='".$reg."';",$connection);
   //Query to reset AttendancePercentage to zero.
       //$query1 = mysql_query("update prog13 set AttendancePercentage=0 where RegNo='".$reg."';",$connection);

}
echo "<table border=3>";
echo "<br><b>MySQL table updated successfully.</b>";
//Query for inserting values in prog13 table.
       //$query1 = mysql_query("insert into prog13 values('123','abcd','sub1',20,16,0);",$connection);
mysql_close($connection); // Closing Connection with Server
?>
</body>
</html>

12. PHP Program to read text file and display data using TABLE tag.

<html>

   <head>
      <title>Reading a file using PHP</title>
   </head>
   <?php
       // Turn off all error reporting
   error_reporting(0);
   ?>

   <body bgcolor=green text=white>

    <?php
       $fp = fopen('D:\\php.txt', 'r');

         if( $fp == false )
       {
            echo ( "<h3>File not found!</h3>" );
            exit();
         }

       $delimiter='#';

           echo "<h3>Salary Details of Employees:</h3>";
           print_r("<table border=3>");
           print_r("<tr><th>EmpId</th><th>EmployeeName</th><th>Designation</th><th>Department</th>
           <th>BasicSalary</th><th>Allowance</th><th>Deduction</th><th>GrossSalary</th><th>NetSalary</th></tr>");
           while ( !feof($fp) )
           {
               $line = fgets($fp, 1024);

               $data = str_getcsv($line, $delimiter);

               $eid=$data[0];
               $ename=$data[1];
               $desig=$data[2];
               $dept=$data[3];
               $bsal=$data[4];
               $all=$data[5];
               $ded=$data[6];
               $gsal=$bsal+$all;
               $nsal=$gsal-$ded;
               print_r("<tr>");
               print_r("<td>".$eid. "</td>");
               print_r("<td>".$ename. "</td>");
               print_r("<td>".$desig. "</td>");
               print_r("<td>".$dept. "</td>");
               print_r("<td>".$bsal. "</td>");
               print_r("<td>".$all. "</td>");
               print_r("<td>".$ded. "</td>");
               print_r("<td>".$gsal. "</td>");
               print_r("<td>".$nsal. "</td>");
               echo "</tr>";
           }
           echo "</table>";
      ?>

   </body>
</html>

12. PHP Program to Read text file and Display data using TABLE tag.

11. JavaScript Program to Display Student Placement Details Course-wise.

<html>
<head>
<title>Placement Program11</title>
<script language="JavaScript">
var regno=document.getElementsByName("regno[]");
var sname=document.getElementsByName("sname[]");
var bca=new Array();
var bsc=new Array();
var bcom=new Array();
var b1="BCA:<br>";
var s1="BSc:<br>";
var c1="BCom:<br>";
var bc=0;
var sc=0;
var cc=0;
function find()
{
   for (var i = 0; i < regno.length; i++)
   {

        var a = regno[i];
       var b = sname[i];

        if(a.value.charAt(0)=='B' || a.value.charAt(0)=='b')
        {
            bca[i]="Register Number:"+a.value+"     Name:"+b.value+"<br>";
               b1=b1 + bca[i];
               bc++;
        }
        if(a.value.charAt(0)=='S' || a.value.charAt(0)=='s')
        {
            bsc[i]="Register Number:"+a.value+" Name:"+b.value+"<br>";
               s1=s1 + bsc[i];
               sc++;
        }
        if(a.value.charAt(0)=='C' || a.value.charAt(0)=='c')
        {
            bcom[i]="Register Number:"+a.value+" Name:"+b.value+"<br>";
               c1=c1 + bcom[i];
               cc++;
        }
}
   document.getElementById("heading").innerHTML="List of Students belonging to each Course:"
   document.getElementById("bca1").innerHTML = b1;
    document.getElementById("bca2").innerHTML = "Total Students selected from BCA:"+bc;
    document.getElementById("bsc1").innerHTML = s1;
    document.getElementById("bsc2").innerHTML = "Total Students selected from BSc:"+sc;
    document.getElementById("bcom1").innerHTML = c1;
    document.getElementById("bcom2").innerHTML = "Total Students selected from BCom:"+cc;

   }
</script>
</head>
<body bgcolor=gray text=yellow>
<form method=get>
<table border=3 >
<tr><th colspan=3>Students Short-listed in Placement</th></tr>
<tr><th>S.No.</th><th>Register Number</th><th>Student Name</th></tr>
<tr><td>01.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>02.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>03.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>04.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>05.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>06.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>07.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>08.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>09.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>10.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>11.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>12.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>13.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>14.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>15.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>16.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>17.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>18.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>19.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td>20.</td><td><input type=text name=regno[]></td><td><input type=text name=sname[]></td></tr>
<tr><td colspan=3 align=center><input type=button value=Submit onClick="find()"></td></tr>
</table>
</form>
<h2 id="heading"></h2>
<h3 id="bca1" ></h3>
<h3 id="bca2"></h3>
<h3 id="bsc1"></h3>
<h3 id="bsc2"></h3>
<h3 id="bcom1"></h3>
<h3 id="bcom2"></h3>
</body>
</html>

Friday 7 January 2022

10. HTML program to read registration details & JSP program to generate OTP and check for registration.

<html>

<head>

<title>OTP Form</title>

</head>

<body bgcolor=gray text=yellow>

<form action="Prog10.jsp">

<table border=3>

<tr><td>Student Name:</td><td><input type=text name=sname></td></tr>

<tr><td>Email ID:</td><td><input type=text name=email></td></tr>

<tr><td>Date of Birth:</td><td><input type=text name=dob></td></tr>

</table>

<script language="JavaScript">

function check()

{

var str1=document.forms[0].elements[2].value;

var result = str1.substring(10, 6);

if(result>2003)

alert("Age should be greater than 18 years!");

else

alert("Click on Submit")

}

</script>

<input type=button value=Proceed onClick="check()" name=Proceed>

<input type=submit value=Submit>

<input type=Reset value=Clear>

</form>

</body>

</html>

<html>

<head>

<%@page import="java.io.*,java.util.*,java.text.SimpleDateFormat"%>

<title>OTP Generation</title>

</head>

<body bgcolor=gray text=yellow>

Date and Time:

SimpleDateFormat dt = new SimpleDateFormat("dd-MM-YYYY HH:mm:ss");

String date = dt.format(new Date());

out.println(date);

String sname=request.getParameter("sname");

String email=request.getParameter("email");

String dob=request.getParameter("dob");

//String otp=request.getParameter("otp1");

//out.println(otp);

<table border=3>

<tr><th>StudentName:</th><th><%=sname %></th></tr>

<tr><td>Email ID:</td><td><%=email %></td></tr>

<tr><td>Date of Birth:</td><td><%=dob %></td></tr>

</table>

<form>

<input type=button value=GetOTP onClick="OTP()">

<input type=button value=Submit >

</form>

<script language="JavaScript">

var otp;

function OTP()

{

var otp=Math.floor(Math.random() * 10000) + 1;

alert(otp);

var otp1=prompt("Enter the OTP");

if(otp1==otp)

document.write("<font color=green >Registration Success!</font>");

else

document.write("<font color=red >OTP Mismatch!</font>");

}

</script>

</body>

</html>

9. JSP Program to read registration details and write into text file & JSP program to read details from text file and show in tabular format.

<html>

<head>

<%@page import="java.io.*,java.lang.*,java.util.Scanner;" %>

<%! int flag=0; %>

<title>Program9 to Write File</title>

</head>

<body bgcolor=gray text=yellow>

<h3>Workshop Registration Form</h3>

<form action="Prog9.jsp" name="form1">

<table border=3>

<tr><td>Sl.No.:</td><td><input type=text name=sno></td></tr>

<tr><td>Delegate Name:</td><td><input type=text name=dname></td></tr>

<tr><td>College Name:</td><td><input type=text name=cname></td></tr>

<tr><td>Delegate Type:</td><td><select name=dtype><option>Staff</option><option>Student</option></select></td></tr>

<tr><td>Address:</td><td><textarea name=address></textarea></td></tr>

<tr><td>Phone Number:</td><td><input type=text name=phone></td></tr>

</table>

<input type=submit value=SAVE>

</form>

<form action="Prog91.jsp" name="form2">

<input type=submit value=DISPLAY>

</form>

String sno=request.getParameter("sno");

String dname=request.getParameter("dname");

String cname=request.getParameter("cname");

String dtype=request.getParameter("dtype");

String address=request.getParameter("address");

String phone=request.getParameter("phone");

try

{

BufferedReader reader = new BufferedReader(new FileReader("D:\\example.txt"));

File fileObj = new File("D:\\example.txt");

FileWriter fstream1 = new FileWriter(fileObj, true);

BufferedWriter br = new BufferedWriter(fstream1);

if(flag==0) //Check for first time entry in the file.

{

br.write("Sl.No"+"#"+"DelegateName"+"#"+"College"+"#"+"DelegateType"+"#"+"Address"+"#"+"Phone"+"#");

flag=1; //File heading is written.

br.newLine();

}

if(dname!=null)

{

br.write(sno+"#"+dname+"#"+cname+"#"+dtype+"#"+address+"#"+phone+"#");

br.newLine();

}

br.close(); //close buffer writer

}

catch(Exception e){out.println("Enter Valid Input!");}

</body>

</html>

<html>

<head>

<%@page import="java.io.*,java.lang.*,java.util.Scanner;" %>

<title>Read File</title>

</head>

<body bgcolor=gray text=yellow>

try

{

File fileObj = new File("D:\\example.txt");

Scanner scanObj = new Scanner(fileObj);

out.println("<h3>Details of Delegates:</h3>");

out.println("<table cellpadding=2 border=3>");

while (scanObj.hasNextLine())

{

String line = scanObj.nextLine();

String str[]=line.split("#",7);

out.println("<tr>");

for (String s :str)

{

out.println("<td>"+s+"</td>");

}

out.println("</tr>");

}

out.println("</table>");

scanObj.close();

}

catch (Exception e)

{

out.println("Enter Valid Input!");

//out.println(e);

}

</body>

</html>

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Java Programs and JSP Applications for Students

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Sunday 23 January 2022

13. PHP Program to read data from MySQL table and Calculate attendance percentage

13. PHP Program to read data from MySQL table and Calculate attendance percentage.

12. PHP Program to read text file and display data using TABLE tag.

12. PHP Program to Read text file and Display data using TABLE tag.

11. JavaScript Program to Display Student Placement Details Course-wise.

Friday 7 January 2022

10. HTML program to read registration details & JSP program to generate OTP and check for registration.

9. JSP Program to read registration details and write into text file & JSP program to read details from text file and show in tabular format.

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