Codes

CalculateBMI.jsp

seisfun — Thu, 04 Sep 2008 10:09:16 +0000

<%@page import=”model.PersonManager”%>

<%
int personHeight = Integer.valueOf(request.getParameter(“txtHeight”));
int personWeight = Integer.valueOf(request.getParameter(“txtWeight”));

PersonManager myManager = new PersonManager();

%>
Person Height : <%=personHeight%>

Person Weight : <%=personWeight%>

BMI : <%= myManager.calculateBMI(personHeight, personWeight) %>

AddPerson.jsp

seisfun — Thu, 04 Sep 2008 10:07:26 +0000

<%@page import=”model.PersonManager”%>
<%@page import=”model.Person”%>

String personName = (String) request.getParameter(“txtName”);
String personAge = (String) request.getParameter(“txtAge”);

Person myPerson = new Person();
PersonManager myManager = new PersonManager();

myPerson.setPersonName(personName);
myPerson.setPersonAge(personAge);

myManager.addPerson(myPerson);

Person <%= myManager.getMyPersons().get(0).getPersonName() %> Added Successfully!

Total Size of Array : <%= myManager.getMyPersons().size() %>

Calculate BMI for this guy …

index.jsp

seisfun — Thu, 04 Sep 2008 10:04:01 +0000

========================

<%@page import=”model.*”%>

Person Manager

Let’s add a Person!

PersonManager.java

seisfun — Thu, 04 Sep 2008 09:54:37 +0000

package model;

import java.util.ArrayList;

public class PersonManager {

private ArrayList myPersons = new ArrayList();

public ArrayList getMyPersons() {
return myPersons;
}

public void setMyPersons(ArrayList myPersons) {
this.myPersons = myPersons;
}

public void addPerson(Person myPerson)
{
myPersons.add(myPerson);
}

public double calculateBMI(double height, double weight)
{
double BMI = weight / ( height * height );

return BMI;

}

Person.java

seisfun — Thu, 04 Sep 2008 09:53:42 +0000

package model;

public class Person {

private String personName;
private String personAge;

public String getPersonName() {
return personName;
}
public void setPersonName(String personName) {
this.personName = personName;
}
public String getPersonAge() {
return personAge;
}
public void setPersonAge(String personAge) {
this.personAge = personAge;
}

}

HTML : Just a Form

seisfun — Wed, 03 Sep 2008 06:27:33 +0000

Let’s have fun with Javascript

Column 1 Row 1	Column 2 Row 1
Column 1 Row 2	Column 2 Row 2

JavaScript : Calculate BMI function

seisfun — Wed, 03 Sep 2008 06:26:36 +0000

function calculateBMI(thisform)
{
with (thisform)
{
var height = txtHeight.value;
var weight = txtWeight.value;
var bmi = 0;

bmi = weight / (height*height);

alert(“YOUR BMI : ” + bmi);
}
}

JavaScript : Validate Input Textboxes

seisfun — Wed, 03 Sep 2008 06:25:56 +0000

function validate_required(field,alerttxt)
{
with (field)
{
if (value==null||value==”")
{
alert(alerttxt);
return false;
}
else
{
return true
}
}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(txtName,”Name must be filled out!”)==false)
{
txtName.focus();
return false;
}
if (validate_required(txtAge,”Age must be filled out!”)==false)
{
txtName.focus();
return false;
}

}
}

JavaScript : Check for Number Input

seisfun — Wed, 03 Sep 2008 06:24:45 +0000