23. Develop a interest calculation application in which user will provide all information in HTML form and that will be processed by servlet and response will be generated back to the user.
1. Using Servlet
index.jsp
<html>
<head>
<title>EX-23</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:400px;
left:5in;
border-style:solid;
}
</style>
</head>
<body>
<div class="abc" id="f1">
<br>
<form method="get" action="/Ex23/bipinrupadiya.blogspot.com">
<table align="center">
<tr>
<td colspan=2 align=center><h3>Simple Interest</h3><hr>
</td>
</tr>
<tr>
<td>Amount : </td>
<td><input type="text" name="p"></td>
</tr>
<tr>
<td>Rate :</td>
<td><input type="text" name="r"></td>
</tr>
<tr>
<td>Time :</td>
<td><input type="text" name="n"></td>
</tr>
<tr>
<td colspan=2 align=center>
<hr>
<input type="submit" value="Calculate">
<input type="reset" value="Clear">
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
Ex23.java
package bsr;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.annotation.WebServlet;
/** Ex23 simple Interest. by Bipin S rupadiya */
@WebServlet("/bipinrupadiya.blogspot.com")
public class Ex23 extends HttpServlet
{
public void doGet(HttpServletRequest request,HttpServletResponse response) throws IOException,ServletException
{
response.setContentType("text/html");
PrintWriter out=response.getWriter();
float p=Float.parseFloat(request.getParameter("p"));
float r=Float.parseFloat(request.getParameter("r"));
float n=Float.parseFloat(request.getParameter("n"));
float i=(p*r*n)/100;
out.println("<br><h1>Simple Interest will be : "+i);
}
}
2. Using Java Beans (Form Beans)
index.jsp
<html>
<head>
<title>EX-23</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:400px;
left:5in;
border-style:solid;
}
</style>
</head>
<body>
<div class="abc" id="f1">
<br>
<form method="POST" action="result.jsp">
<table align="center">
<tr>
<td colspan=2 align=center><h3>Simple Interest</h3><hr>
</td>
</tr>
<tr>
<td>Amount : </td>
<td><input type="text" name="p"></td>
</tr>
<tr>
<td>Rate :</td>
<td><input type="text" name="r"></td>
</tr>
<tr>
<td>Time :</td>
<td><input type="text" name="n"></td>
</tr>
<tr>
<td colspan=2 align=center>
<hr>
<input type="submit" value="Calculate">
<input type="reset" value="Clear">
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
result.jsp
<html>
<head>
<title>EX-23</title>
<style>
.abc
{
background:#ababff;
position:absolute;
top:2in;
hieght:200px;
width:400px;
left:5in;
border-style:solid;
}
</style>
</head>
<BODY>
<CENTER>
<jsp:useBean id="si" class="bsr.SimpleIntrest" />
<jsp:setProperty name="si" property="*" />
<div class="abc" id="f1">
<br>
<table width="50%" align="center">
<tr>
<th colspan=2><h3> Simple Interest</h3><hr></th>
</tr>
<tr>
<td>Amount : </td>
<td><jsp:getProperty name="si" property="p" /></td>
</tr>
<tr>
<td>Rate :</td>
<td><jsp:getProperty name="si" property="r" /></td>
</tr>
<tr>
<td>Time :</td>
<td><jsp:getProperty name="si" property="n" /></td>
</tr>
<tr>
<td>Interest :</td>
<td><jsp:getProperty name="si" property="intrest" /></td>
</tr>
<tr>
<th colspan=2> <hr><a href="index.jsp">Home</a></th>
</tr>
</table>
</form>
</div>
</body>
</html>
SimpleIntrest.java [ JavaBean ]
package bsr;
public class SimpleIntrest
{
private float p=1;
private float r=1;
private float n=1;
// Principal Amount
public float getP()
{
return(p);
}
public void setP(float v)
{
this.p = v;
}
// Rate of Interest
public float getR()
{
return(r);
}
public void setR(float v)
{
this.r = v;
}
// Number of Years
public float getN()
{
return(n);
}
public void setN(float v)
{
this.n = v;
}
//Calculate Interest
public float getIntrest()
{
return((p*r*n)/100);
}
}
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