This example will demonstrate you how to work with checkboxes in JSP.
To do check boxes example in JSP we have the following prerequisites:
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JDK 5.0 or higher is better(In this example, I have compiled code using Java Version (JDK – jdk1.6.0_20 and JRE – jre6)).
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Apache Tomcat Server 6.X or latest version. (In this example using Tomcat Apache – 6.0.20).
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Eclipse (You can use any eclipse available or You like).
If all the prerequisites are satisfied. Now follow the following steps to see the Check Boxes Example in JSP.
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| after installing apache tomcat in eclipse |
Create a Dynamic Web Project named “checkBoxExample” using Eclipse IDE.
If You are desirous to know how to create a dynamic web project using Eclipse IDE and Apache Tomcat Application Server. Please see this tutorial – How to create a dynamic Project Using Eclipse and Tomcat.
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| eclipse screen once you have created dynamic project. |
Step 3: Creating the three JSP files
In this step we will create the three JSP files.
1. index.jsp – This page is the welcome page where we will describe the user how to proceed for example.
index.jsp – use the below code and save it as index.jsp
<html>
<head>
<title>Check Boxes Example in JSP</title>
</head>
<body>
Welcome to sitenol.com <br/>
Let Us See Check Box Example Here.<br/>
Click on goToExaple link.<br/>
See multiple check boxes on the next page.<br/>
Select Multiple Check Boxes.<br/>
Click On "Show My Hobbies Button"<br/>
Browser will show the selected hobbies.<br/>
<p style="text-align: left: ;">
<a href="checkBoxInTable.jsp">goToExaple</a>
</p>
</body>
</html>2. checkBoxInTable.jsp – when user will click on “goToExaple” link this page will be show.
checkBoxInTable.jsp – Copy the below code and save it as checkBoxInTable.jsp in eclipse.
<html>
<head>
<title>Check Boxes Example in JSP</title>
</head>
<body>
<form action="displayHobbies.jsp" method="get">
<p align="left" style="font-weight: bolder;">Choose You Hobbies :
</p>
<table border="0">
<tr>
<td><input type="checkbox" name="internetSurf"
value="I am fond of Internet Surfing." /></td>
<td>I am fond of Internet Surfing.</td>
</tr>
<tr>
<td><input type="checkbox" name="readBooks"
value="I am fond of reading books." /></td>
<td>I am fond of reading books.</td>
</tr>
<tr>
<td><input type="checkbox" name="playTennis"
value="I am fond of Plaing Tennis." /></td>
<td>I am fond of Plaing Tennis.</td>
</tr>
<tr>
<td><input type="checkbox" name="driving"
value="I am fond of Driving." /></td>
<td>I am fond of Driving.</td>
</tr>
</table>
<input type="submit" value="Show My Hobbies" />
</form>
</body>
</html>3. displayHobbies.jsp – This is the page where we can see output.
Copy the code given below, save it as displayHobbies.jsp in your Eclipse IDE.
<html><head>
<title>Check Boxes Example in JSP</title>
</head>
<body>
<p style="text-align: left: ;">
Hello ! Your Selected Hobbies are :
<br><br><br>
<%
java.util.Enumeration paramNames = request.getParameterNames();
if(paramNames != null){
while(paramNames.hasMoreElements()){
out.println(request.getParameter(
(String)paramNames.nextElement()) +"<br>");
}
}
%>
</p>
</body></html>
So you have done with JSP pages. The screen of Eclipse IDE for your ease is given below.
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| Check Box Example Using Eclipse and Apache Tomcat |
Step 4 : Deploy and Run Our Application
In the last deploy the war file to Apache tomcat Server. Please wait till server gets started then hit
http://localhost:8080/checkBoxExample/index.jsp
you will receive these three screens after navigating properly one by one..
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Result of : http://localhost:8080/checkBoxExample/index.jsp
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| select your hobbies in image |
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| Final Result for Check Boxes selected in the JSP |
I was doing mistake while retrieving form values. You have used Enumeration class to retrieve vales. I have done.