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POReading client COMPORT from Java applet
 

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    <p>I need to read client comport accessing my JSP based web application.</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;meta http-equiv="Content-Type" content="text/html; charset=UTF-8"&gt; &lt;title&gt;COMPORT&lt;/title&gt; &lt;/head&gt; &lt;body bgcolor="blue"&gt; &lt;h1&gt;ACCESSING COMPORT&lt;/h1&gt; &lt;jsp:plugin align="middle" height="500" width="500" type="applet" archive="" code="SunCommSerialPort.class" name="clock" codebase="."/&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>This is my Java applet code to read COM port.</p> <pre><code>import java.util.Enumeration; import javax.comm.CommPortIdentifier; /** @author Venugopal */ public class COMPORT { /** @param args the command line arguments */ public static void main(String[] args) { COMPORT CM = new COMPORT(); String StrCommPort = CM.GetSerialPort(); System.out.println("StrCommPort " + StrCommPort); } public String GetSerialPort() { String Serialport = ""; Enumeration portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { CommPortIdentifier portId = (CommPortIdentifier) portList.nextElement(); if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) { Serialport = Serialport + portId.getName() + "//"; } else { // ////////////System.out.println(portId.getName()); } } if(Serialport !=null &amp;&amp; Serialport.length() &gt;0){ Serialport = Serialport.substring(0, Serialport.length() - 2); } return Serialport; } } </code></pre> <p>Please tell us what to do.I have kept all necessary files at correct place. The Java code I have kept here was working after that I have modified extending applet and removing PSVM with <code>init()</code> method.</p>
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    1. USAndrew Thompson
    1. USSUDARSHAN
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    1. CO*"THIS IS MY JAVA APPLET CODE"* 1) Stop YELLING at us. 2) While it is Java code, it is ***not*** an applet.
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      1. USAndrew Thompson
    2. CO*"The Java code I have kept here was working after that I have modified extending applet and removing PSVM with `init()` method."* Did it not occur to you that the applet code is what we need to see? For better help sooner, post an [SSCCE](http://sscce.org/) of **applet** code. 2) WTF is PSVM? 3) This functionality would require the applet to have full trust. Why does a web app. need to access COM ports?
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      1. USAndrew Thompson
    3. CO@AndrewThompson PSVM = `public static void main`. (Arguably a worse way of referring to it than just using "`main()`"
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      1. USmillimoose
 

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