getting getNetworkPrefixLength() -1 (incorrect) in Windows 8 and 20 (correct) in windows XP

Asked Jun 20 '14 at 08:01

Active Jun 20 '14 at 08:28

Viewed 25 times

I want to get subnet mask for my network interface in java. My IP Address is 172.16.179.197 Subnet Mask: 255.255.240.0

my code

ifa.getAddress().getHostAddress() gives Ip address but ifa.getNetworkPrefixLength() gives -1 in Windows 7/8 but gives 20 in windows xp

how to get netprifix or subnet mask for subnet 255.255.240.0 by java

edited Jun 20 '14 at 08:28

asked Jun 20 '14 at 08:01

Umashankar Prasad

Please answer now. I had updated my Question – Umashankar Prasad Jun 20 '14 at 08:30

0 Answers0