Free Programming Source Codes and Computer Programming Tutorials

Sunday, June 21, 2015

Math Operations in JSP

In this short article I would like to share with you a program that I wrote in Java Server Pages or JSP I called this program Math Operations in JSP. What program does is to ask the user to enter two numbers and then it will find the sum, product, difference and quotient of two numbers. JSP is the scripting language used in J2EE programming in Java it is similar to PHP, Ruby or Perl but it uses more Java programming language statements.

In this program I am using Java EE IDE provided freely by Eclipse.org and Apache Tomcat as my application server. I hope you will find my work useful in learning web programming using Java Server Pages or JSP.

If you have some questions please send me an email at jakerpomperada@gmail.comand jakerpomperada@yahoo.com.

People here in the Philippines can reach me at my mobile number 09173084360.

Thank you very much and Happy Programming.

Sample Program Output

Program Listing

<HTML>

<HEAD>

<TITLE>Math Operations in JSP</TITLE>

</HEAD>

<H1>Basic Math Operations in JSP</H1>

Enter first value : <input type="text" name="value1" size="10" ><br>

Enter second value : <input type="text" name="value2" size="10"><br>

</FORM>

int x= Integer.parseInt(request.getParameter("value1"));

int y = Integer.parseInt(request.getParameter("value2"));

int sum = (x+y);

int difference = (x-y);

int product = (x*y);

int quotient = (x/y);

if(request.getParameter("submit") != null) {

out.print("The sum of " + x + " and " + y + " is " + sum + ". <br>");

out.print("The difference of " + x + " and " + y + " is " + difference + ". <br>");

out.print("The product of " + x + " and " + y + " is " + product + ". <br>");

out.print("The quotient of " + x + " and " + y + " is " + quotient + ". <br>");

}

</BODY>

</HTML>

Thursday, June 18, 2015

Greeter Program in Java Server Pages or JSP

In this article I would like to share with you a simple greeter program that I wrote using Java Server Pagers or JSP scripting language that is based in Java programming language. What does the program will do is very simple it will ask the user its first and last name and then say hello to the user.

I just wrote this code as a learning aid in my study of JSP in J2EE programming for web in Java. I hope beginners like me will benefited from my work.

Program Listing

<html>

<head>

<title>Greeter in JSP</title>

</head>

<body>

<tr>

<td>Enter First Name</td>

<td>Enter Last Name</td>

</tr>

</table>

</form>

<br>

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

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

if (first_name == null || last_name == null) {

} else {

if (first_name.length() == 0 || last_name.length() ==0) {

<b>myText is empty</b>

<% } else { %>

<b>Hello <%= first_name %> <%= last_name %></b>

}

</body>

</html>

Sunday, June 7, 2015

Cars Collections Information System in PHP and XML

A simple application that I wrote in PHP and XML that will give information to the user about the classic car collections in the past. The data is being stored in XML file and I retrieve the records using PHP as my programming language.

If you have some questions please send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

People here in the Philippines can reach me at my mobile number 09173084360.

Thank you very much and Happy Programming.

Sample Program Output

index.php






<html>
<title>Car Collection in PHP and XML
</title>
<style>
h1 {
font-family:arial;
color:blue;
};

</style>

<body bgcolor="yellow">
<br><br>
<h1>
Car Collection in PHP and XML
</h1>
<form method="post" action="">
<select id="select" class="select" name="filter1" style="text-align:center;">
<option value="1" <?php if(@$_POST['filter1'] == '1') { echo 'selected = \"selected\"'; } ?>>Car Series One</option>
<option value="2" <?php if(@$_POST['filter1'] == '2') { echo 'selected = \"selected\"'; } ?>>Car Series Two</option>
</select>
<input type="submit" id="submit" name="submit" value="ok" title="Click here to select your choice.">
</form>
<br>
<?php
if(isset($_POST['submit'])){

if($_POST['filter1'] == "1")
{
$xml = simplexml_load_file("car1.xml");

foreach($xml->children() as $automobile)
{
echo "<font color='blue' face='arial' size='3'>Car Name : ".$automobile->name."<br />";
echo "Year : ".$automobile->year." <br />";
echo "Price : ".$automobile->price." <br />";
echo " Description : ".$automobile->description." <br /> </font>";
echo "<br><br>";
}
}

else if ($_POST['filter1'] == "2")
{
$xml = simplexml_load_file("car2.xml");

foreach($xml->children() as $automobile)
{
echo "<font color='blue' face='arial' size='3'>Car Name : ".$automobile->name."<br />";
echo "Year : ".$automobile->year." <br />";
echo "Price : ".$automobile->price." <br />";
echo " Description : ".$automobile->description." <br /> </font>";
echo "<br><br>";

}
}

}
?>

</body>
</html>

car1.xml

<?xml version="1.0"?>
<cars>
<automobile id="1">
<name>Studebaker President Eight Roadster </name>
<year> 1929 </year>
<price>$1,895</price>
<description>
Studebaker 1929 President Eight Roadster seats two
in the comfortable front seats and two in the Rumble
, 115 Horsepower engine, hydraulic shock absorbers, wire wheels,
spare tire and bumpers are additional
to the price.
</description>
</automobile>

<automobile id="2">>
<name>Chevrolet</name>
<year> 1924 </year>
<price>$525.00</price>
<description>
By the middle of the decade Chevrolet had joined the auto mass production
era and although the cars were more expensive than Ford's at the time many of
those things that cost extra on the Ford were included, the basic specs were Standard
Transmission with 3 forward and 1 reverse gear, Standard Electrical System which
included electric starter, electric lights front and rear, large radiator and fan,
speedometer, ammeter, oil pressure gauge,choke pull, starting switch, plus an extra tire
rim was included mounted on the rear of the car
</description>
</automobile>

<automobile id="3">>
<name>Buick Marquette </name>
<year> 1930</year>
<price>$965.00</price>
<description>
The Buick Marquette features a 67.5 horsepower engine that
races from 0 to 60 in just 31 seconds. The Buick Marquette offers
easy vibration free motoring at 70 MPH, also featuring 4 wheel brakes
working on 12 inch drums, 4 hydraulic shock absorbers ensure a
smooth ride over all surfaces. Bodies are manufactured by Fisher
</description>
</automobile>

<automobile id="4">>
<name>Gray Motor Company Coach </name>
<year> 1923</year>
<price>$785</price>
<description>
1923 Gray Motor Company Coach features a four cylinder engine,
3 speed transmission, lightening ignition from Westinghouse,
4 wheel shock absorbing springs,comes in 4 options starting at $495 for
the Roadster to the 4 door sedan costing $835.00
</description>
</automobile>

</cars>

car2.xml

<?xml version="1.0"?>

<cars>

<name>Dodge Brothers De-Luxe Sedan </name>

Dodge Brothers auto's are known for their top quality materials used

in each and every auto with the finest Chrome Vanadium used from the Axles

to the engine, and Mohair Interior of the finest quality offering long life

and dependability for your purchase.

</description>

</automobile>

<name>Cadillac 90 Degree </name>

Cadillac Prestige Pointing the way to Luxury, Distinction and motor car value

that brings abiding satisfaction.

</description>

</automobile>

<name>Chrysler 75 Roadster </name>

The new Chrysler 75 Roadster for 1928, one the most attractive cars of

our times made by master craftsmen entering a new era in design and craftsmanship.

</description>

</automobile>

<name>Horse Drawn Auto Seat Top Buggy </name>

I have included this example because it shows how traditional

horse drawn carriage manufacturers were trying to survive, one

of the most interesting selling points for this carriage was that

the wheel base size was the same as most of the smaller autos of the

day 4ft 8 inches, and if you look the sitting position and layout was

very similar although higher off the ground.

</description>

</automobile>

</cars>

Selecting a Value in PHP and XML

In this sample program I will show you how to select a value from a drop down menu in HTML and extract the data in an XML file. This will be my first time to write a program that uses XML and PHP. According to Wikipedia.org XML is defined as Extensible Markup Language (XML) is a markup language that defines a set of rules for encoding documents in a format which is both human-readable and machine-readable. It is defined by the W3C's XML 1.0 Specification and by several other related specifications, all of which are free open standards.

The code is very easy to follow and understand I hope you will find my work useful in your programming projects and assignments. If you have some questions please send me an email at jakerpomperada@yahoo.com and jakerpomperada@gmail.com.

People here in the Philippines can contact me at my mobile number 09173084360.

Thank you very much and Happy Programming.

Program Listing

index.php

<html>

<title>Selecting a value in PHP and XML

</title>

<style>

h1 {

font-family:arial;

color:blue;

};

</style>

<h1>

SELECTING A VALUE IN PHP AND XML

</h1>

<option value="1" <?php if(@$_POST['filter1'] == '1') { echo 'selected = \"selected\"'; } ?>>First Record</option>

<option value="2" <?php if(@$_POST['filter1'] == '2') { echo 'selected = \"selected\"'; } ?>>Second Record</option>

<option value="3" <?php if(@$_POST['filter1'] == '3') { echo 'selected = \"selected\"'; } ?> >Third Record</option>

<option value="4" <?php if(@$_POST['filter1'] == '4') { echo 'selected = \"selected\"'; } ?>>Fourth Record</option>

</select>

</form>

<br>

<?php

if(isset($_POST['submit'])){

if($_POST['filter1'] == "1")

{

$users = simplexml_load_file("1.xml");

foreach ($users->person as $item)

{

if ($item->id == 1) {

echo "<font color='blue' face='arial' size='5'>Title : ".$item->title."<br />";

echo "Name : ".$item->name." <br />";

echo "Address : ".$item->address." <br /> </font>";

}

else if ($_POST['filter1'] == "2")

{

$users = simplexml_load_file("1.xml");

foreach ($users->person as $item)

{

if ($item->id == 2) {

echo "<font color='blue' face='arial' size='5'>Title : ".$item->title." <br />";

echo "Name : ".$item->name." <br />";

echo "Address : ".$item->address." <br /> </font>";

}

else if ($_POST['filter1'] == "3")

{

$users = simplexml_load_file("1.xml");

foreach ($users->person as $item)

{

if ($item->id == 3) {

echo "<font color='blue' face='arial' size='5'> Title : ".$item->title." <br />";

echo "Name : ".$item->name." <br />";

echo "Address : ".$item->address."</font> <br />";

}

else if ($_POST['filter1'] == "4")

{

$users = simplexml_load_file("1.xml");

foreach ($users->person as $item)

{

if ($item->id == 4) {

echo "<font color='blue' face='arial' size='5'> Title : ".$item->title." <br />";

echo "Name : ".$item->name." <br />";

echo "Address : ".$item->address."</font> <br />";

}

else {

echo "No Selected Records.";

}

</body>

</html>

1.xml

<?xml version="1.0"?>

<title> First Record </title>

<name> Ana Maria Tan </name>

<address> Cubao, Quezon City </address>

</person>

<title> Second Record </title>

<name> David Smith </name>

<address> Washington Street, Iloilo City </address>

</person>

<title> Third Record </title>

<name> Linda Lee </name>

<address> Hongkong, China </address>

</person>

<title> Fourth Record </title>

<name> Adam Stone </name>

<address> West Avenue, United Kingdom </address>

</person>

</information>

DOWNLOAD SOURCE CODE HERE

Sunday, May 31, 2015

Reverse a Word in Turbo Pascal

In this article I will share a code that I wrote during my college days using Turbo Pascal I called this program reverse a word. What does this program will do is to ask the user a word or string and then it will display the word in reverse order.

If you have some questions please send me an email at jakerpomperada@yahoo.com and jakerpomperada@gmail.com.

People here in the Philippines can contact me at my mobile number 09173084360.

Thank you very much and Happy Programming.

Sample Program Output

Program Listing

Program Reverse;

Uses Crt;

Var InpStr : String;

OutStr : String;

Size, I : Integer;

Begin

Clrscr;

Write('REVERSE A WORD');

Writeln; Writeln;

Write('Please Enter A String :=> ');

Readln(InpStr);

Size := Length(InpStr);

For I := 1 To Size Do

Begin

OutStr[I] := InpStr[Size - (I - 1)];

OutStr[0] := Chr(Size);

End;

Writeln;

Write('The Reversed String is ' ,OutStr,'.');

Readln;

End.

Finding the Area of a Circle Using BASH

In this article I would like to share with you a sample program that I wrote using Bourne Again Shell or BASH scripting language that is being used in UNIX and LINUX operating system. What does the program will do is to ask the user to enter the radius of the circle and then our program will compute the area of the circle.

The script is very simple and short is very easy to understand and read. If you have some questions regarding about my works feel free to send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

People here in the Philippine who wish to contact me can reach me through my mobile number 09173084360.

Thank you very much and Happy Programming.

Sample Program Output

Program Listing

#!/bin/bash

echo -e "\n\n"

echo -e "\t\t FINDING THE AREA OF THE CIRCLE IN BASH"

echo -e "\n"

read -p "Kindly give the radius of a circle :=> " radius

echo -e "\n"

area=$(echo "scale=2;3.14159 * ($radius * $radius)" | bc)

printf "The area of the circle is %0.2f." $area

echo -e "\n"

echo -e "Thank you for using this program."

Payroll Database System in C++

In this article I will share with you a program that I wrote in C++ that will manage the payroll system of the employees in the company I called this program Payroll Database System in C++ that uses text file to save the records of the employees. In this program I am using CodeBlocks as my text editor and Dev C++ as my C++ compiler that is very available over the Internet for free because it is an open source.

If you have some questions regarding about my work please send me an email at jakerpomperada@gmail.com and jakerpomperada@yahoo.com.

People here in the Philippines who wish to contact me can reach me thru my mobile number at 09173084360.

Thank you and Happy Programming.

Sample Program Output

Program Listing

#include<iostream>

#include<fstream>

#include<stdio.h>

#include<string.h>

#include<conio.h>

#include<sstream>

#include<iomanip>

using namespace std;

void append();

void find();

void read();

void whattodo();

void loop();

void about();

void mainfind();

int main()

{

system("Color 2F");

cout<<"\t\t\t------------------"<<endl;

cout<<"\t\t\t* Payroll System *"<<endl;

cout<<"\t\t\t------------------"<<endl;

whattodo();

getch();

return 0;

}

void whattodo()

{

int choice;

loop:

cout << "\n\t\t Created By: Mr. Jake R.Pomperada, MAED-IT";

cout << "\n\n";

cout<<"Type the number of the command you want to perform:"<<endl;

cout<<endl;

cout<<"[1] Append Record"<<endl;

cout<<"[2] Browse all file contents"<<endl;

cout<<"[3] Find a record"<<endl;

cout<<"[4] Exit"<<endl;

cout<<"[5] About"<<endl;

cout<<""<<endl;

cin>>choice;

cout<<""<<endl;

if (choice==1)

{

system("cls");

append();

cout<<endl;

loop();

}

else if (choice==2)

{

system("cls");

read();

cout<<endl;

loop();

}

else if(choice==3)

{

system("cls");

mainfind();

loop();

}

else if(choice==4)

{

system("cls");

cout<<"Goodbye.";

}

else if(choice==5)

{

system("cls");

about();

}

else

{

cout<<"Invalid! Try again."<<endl;

goto loop;

}

system ("cls");

}

void append()

{

string emp_first, emp_last;

string id;

double salary=0.00;

ofstream fout;

fout.open("myRecord.txt",ios::app); // open file for appending

cout<<"Enter Employee Id: ";

cin >> id;

cout << "\n";

cout<<"Enter Employee Name: ";

cin >> emp_first >> emp_last;

cout<<"Enter Employee Salary:";

cin >> salary;

fout << setiosflags(ios::fixed | ios :: showpoint)

<< setprecision(2);

fout<< id<< ", " << emp_first

<< " " << emp_last << " , " << salary << endl;

fout << fixed;

fout.close( ); //close file

}

void read()

{

string line;

ifstream x ("myRecord.txt");

if (x.is_open())

{

while(!x.eof())

{

cout<<endl;

getline(x,line);

cout<<line<<endl;

}

x.close();

}

else

cout<<"Cant open file."<<endl;

}

void find()

{

ifstream data("myRecord.txt");

string item,line;

int x=0;

int y=0;

string id;

cout<<endl;

cout<<"Enter Employee Id: ";

cin>>id;

cout<<""<<endl;

while(!data.eof())

{

getline(data,line);

string item_array[10];

stringstream stream(line);

x=0,y=0;

while(getline(stream,item,','))

{

item_array[x]=item;

x++;

item_array[y]=item;

y++;

}

if(item_array[0]==id)

{

cout<<setfill('-')<<left<<setw(10)<<"\t\t\tID: " <<right<<" "<<item_array[0]<<endl;

cout<<setfill('-')<<left<<setw(10)<<"\t\t\tName: " <<right<<" "<<item_array[1]<<endl;

cout<<setfill('-')<<left<<setw(10)<<"\t\t\tRate: " <<right<<" "<<item_array[2]<<endl;

cout<<""<<endl;

}

data.close();

}

void loop()

{

string choice;

cout<<""<<endl;

cout<<"Do you want to make another choice?(yes/no)";

cin>>choice;

system("cls");

cout<<""<<endl;

if (choice=="yes")

{

whattodo();

}

else if(choice=="no")

{

cout<<"Goodbye.";

}

void about()

{

cout<<endl;

cout<<" ABC Computer Training Center"<<endl;

cout<<" 1st Floor, Victoria Center"<<endl;

cout<<" Bacolod City, Philippines Tel.No. 4335081"<<endl;

cout<<" Endterm Exams"<<endl;

cout<<""<<endl;

cout<<" Professor : Sir Jake R. Pomperada"<<endl;

cout<<""<<endl;

cout<<" Project Manager : Juan Dela Cruz"<<endl;

cout<<""<<endl;

cout<<" Program Designer: Pedro Santa Maria"<<endl;

cout<<""<<endl;

loop();

}

void mainfind()

{

find();

string id;

cout<<"Type back to go to main menu."<<endl;

cout<<"Press any key to find another profile."<<endl;

cin>>id;

system("cls");

if (id=="back")

{

whattodo();

}

else

{

mainfind();

find();

}

DOWNLOAD SOURCE CODE HERE

Free Programming Source Codes and Computer Programming Tutorials

Sunday, June 21, 2015

Math Operations in JSP

Thursday, June 18, 2015

Greeter Program in Java Server Pages or JSP

Sunday, June 7, 2015

Cars Collections Information System in PHP and XML

Selecting a Value in PHP and XML

Sunday, May 31, 2015

Reverse a Word in Turbo Pascal

Finding the Area of a Circle Using BASH

Payroll Database System in C++

Google Ads

Followers