How Can Scan Wireless Network Using Java

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Hi can any one tell me how can i scan wireless network and how many devices are connected with my wireless network(list of connected devices) using java please can any one help me..?

Posted 8-Jul-12 21:33pm

Khudha Bakhsh Mari

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2 solutions

Solution 1

There is no API for that. But you can use some devices and trigger them via command line. It all depends on what Hardware/OS/Software you use.

Posted 9-Jul-12 0:53am

TorstenH.

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Khudha Bakhsh Mari 9-Jul-12 9:05am

hi dear
operation system may b mac,window, Linux , if you have any hint or solution please help me..thnx

TorstenH. 9-Jul-12 9:40am

Netstumbler
AiroPeek
Ethereal

are the three tools one can use to find and decipher WLANs. Remember: it's not legal, so only practice on your own WLAN (e.g. for testing how safe it really is).

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Khudha Bakhsh Mari · Accepted Answer · 2012-07-10T00:58:00

Hi dear friends I have solve this myself in this way(given below) but(one problem with this is that it is more slow),this is showing me all computers(laptop[wireless]) connected with my network but now I want to show android, BlackBerry devices connected with my network how can I do this can any one help me please.

public class NetworkPing extends JFrame{
public NetworkPing() {
}
public static void main(String[] args) throws UnknownHostException {
try {
second_testmethod();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public static void second_testmethod() throws IOException{
InetAddress localhost = null;
try {
localhost = InetAddress.getLocalHost();
} catch (UnknownHostException e) {
e.printStackTrace();
}
// this code assumes IPv4 is used
byte[] ip = localhost.getAddress();
for (int i = 0; i < 255; i++)
{
ip[3] = (byte)i;
InetAddress address = InetAddress.getByAddress(ip);
if (address.isReachable(1000))
{
System.out.println("can b pinged");
// machine is turned on and can be pinged
}
else if (!address.getHostAddress().equals(address.getHostName()))
{
System.out.println("Name is......"+address.getHostName()+"\tIP is......."+address.getHostAddress());
// machine is known in a DNS lookup
}
else
{
System.out.println("nothing");
// the host address and host name are equal, meaning the host name could not be resolved
}
}
}
}//end of class