37 lines
1.5 KiB
HTML
37 lines
1.5 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<html>
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<head>
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<META http-equiv="Content-Type" content="text/html; charset=utf-8">
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<LINK rel="stylesheet" type="text/css" href="../../../rzahg/ic.css">
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<title>Extend the HttpServlet class</title>
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</head>
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<BODY>
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<!-- Java sync-link -->
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<SCRIPT LANGUAGE="Javascript" SRC="../../../rzahg/synch.js" TYPE="text/javascript"></SCRIPT>
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<h6><A NAME="servclss"></A>Extend the HttpServlet class</h6>
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<p>After the import statements, type the class declaration (in black text below):</p>
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<pre><font color="#808080" class="code">import java.io.*;
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import java.util.*;
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import javax.servlet.*;
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import javax.servlet.http.*;</font>
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public class ServletSample extends HttpServlet
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{
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}
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</pre>
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<p>The example, ServletSample, extends the javax.servlet.http.HttpServlet class of the javax.servlet.http package. Java requires the declared classname to match the name of the java file ServletSample.java. The HttpServlet class, which is a subclass of GenericServlet, provides specialized methods for handling HTML forms. HTTP servlets enable you to send and receive data using an HTML form.</p>
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<p>HTML forms are defined by the <FORM> and </FORM> tags. The forms typically include input fields (such as text entry fields, check boxes, radio buttons, and selection lists) and a button to submit the data. They also specify which program or servlet the server should run when the information is submitted.</p>
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</body>
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</html>
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