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POGetting MAC address on a web page using a Java applet
 

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  1. POGetting MAC address on a web page using a Java applet
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    <p>I want to create an application where a web server can get the MAC Address of the clients logging in. The only possible way I could think of was to create a JAVA applet which contains java.net methods to find the mac address</p> <p>I am using javascript to call the applet methods, but the browser is not allowing those methods to execute. Below is the applet I have created.</p> <pre><code>import java.applet.*; import java.awt.*; import java.net.InetAddress; import java.net.NetworkInterface; import java.net.SocketException; import java.net.UnknownHostException; public class AppletRunner extends Applet{ // The method that will be automatically called when the applet is started public void init() { // It is required but does not need anything. } //This method gets called when the applet is terminated //That's when the user goes to another page or exits the browser. public void stop() { // no actions needed here now. } //The standard method that you have to use to paint things on screen //This overrides the empty Applet method, you can't called it "display" for example. public void paint(Graphics g) { //method to draw text on screen // String first, then x and y coordinate. g.drawString(getMacAddr(),20,20); g.drawString("Hello World",20,40); } public String getMacAddr() { String macAddr= ""; InetAddress addr; try { addr = InetAddress.getLocalHost(); System.out.println(addr.getHostAddress()); NetworkInterface dir = NetworkInterface.getByInetAddress(addr); byte[] dirMac = dir.getHardwareAddress(); int count=0; for (int b:dirMac){ if (b&lt;0) b=256+b; if (b==0) { macAddr=macAddr.concat("00"); } if (b&gt;0){ int a=b/16; if (a==10) macAddr=macAddr.concat("A"); else if (a==11) macAddr=macAddr.concat("B"); else if (a==12) macAddr=macAddr.concat("C"); else if (a==13) macAddr=macAddr.concat("D"); else if (a==14) macAddr=macAddr.concat("E"); else if (a==15) macAddr=macAddr.concat("F"); else macAddr=macAddr.concat(String.valueOf(a)); a = (b%16); if (a==10) macAddr=macAddr.concat("A"); else if (a==11) macAddr=macAddr.concat("B"); else if (a==12) macAddr=macAddr.concat("C"); else if (a==13) macAddr=macAddr.concat("D"); else if (a==14) macAddr=macAddr.concat("E"); else if (a==15) macAddr=macAddr.concat("F"); else macAddr=macAddr.concat(String.valueOf(a)); } if (count&lt;dirMac.length-1)macAddr=macAddr.concat("-"); count++; } } catch (UnknownHostException e) { // TODO Auto-generated catch block macAddr=e.getMessage(); } catch (SocketException e) { // TODO Auto-generated catch block macAddr = e.getMessage(); } return macAddr; } } </code></pre>
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    1. USAmit Arya
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      1. POGetting MAC address on a web page using a Java applet
      1. USJason Antman
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      1. USAbhishek B.
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    1. COWhy do you want that? I can only think of privacy invasion.
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      1. POGetting MAC address on a web page using a Java applet
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    2. COAre you getting an error or how do you know the browser is not allowing it?
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      1. POGetting MAC address on a web page using a Java applet
      1. USEnrique
 

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