asked on

Java read machine address

Dear all, i am planning to use the machine address to be the unique character to determine my licensing program.

I have code this code,

      Enumeration enu = NetworkInterface.getNetworkInterfaces();
                  while (enu.hasMoreElements()){
                        System.out.println(enu.nextElement());
                  }
..
..

**********
name:lo (MS TCP Loopback interface) index: 1 addresses:
/127.0.0.1;

name:eth0 (Realtek RTL8168/8111 PCI-E Gigabit Ethernet NIC - Packet Scheduler Miniport) index: 2 addresses:
/11.11.10.29;

name:eth1 (Bluetooth PAN Network Adapter - Packet Scheduler Miniport) index: 65540 addresses:
/121.145.50.1;

*****************

and it's doesn't seems what i am looking for.
What i am looking is something which is unique and the best in mind is the Network Interface Card number.

Can you help??

cmalakar

InetAddress netaddr = InetAddress.getLocalHost();
netaddr.getHostName(); // will return the hostname
netaddr.getHostAddress(); // will return the host ip address

cmalakar

or else You can use..

getHardwareAddress() api of NetworkInterface class

penang67

ASKER

the InetAddress doesn't have the get MAC address method.

cmalakar

getHardwareAddress() returns the MAC Address

But it is available from jdk 1.6 version..

If you want to get the MAC Address in < 1.6 version..

Then you have execute os command using

Runtime.exec("oscommand") and grep from the MAC address from the output

penang67

ASKER

can you show how to get it from getHardwareAddress() from the inetaddr???

ASKER CERTIFIED SOLUTION

cmalakar

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penang67

ASKER

cmalakar, thanks for your help. Can you help to explain, how is this statement mean??

String temp = Integer.toHexString(b[i] & 0xff);

the toHexString(int i) how come become b[i] & 0xff and why '0Xff'??

thanks

cmalakar

Refer Comment ID:20812688

in https://www.experts-exchange.com/questions/23128320/Reading-a-File-into-a-a-Byte-Array.html

Hope this helps