Getting a part of IP address String

Question

If I have a IP address String like : 10.120.230.78 I would like to get 10.120. out of it

But the parts of the address can change from 1 tot 3 numbers as we all know ...

1.1.1.1 to 255.255.255.255 so ....

I believe you can use a pattern, but I don't have an idea how to.

amit · Accepted Answer · 2011-05-14 20:43:43Z

12

assume you store your ip as a string called ip, you can use String.split() to get an array of the parts:

String[] tokens = ip.split("\\.");

answered May 14, 2011 at 20:43

amit

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user228534 · Accepted Answer · 2011-05-14 20:44:36Z

2

ip.substring(0, ip.indexOf('.',ip.indexOf('.') + 1) + 1)

where ip is the string holding the IP address.

answered May 14, 2011 at 20:44

user228534

Comments

Ahmed Ashour · Accepted Answer · 2023-10-27 09:38:50Z

1

The best way is String.split() as already mentioned by amit. E.g.
```
String[] ipAddressParts = ipAddress.split();
```

Also you can use

StringTokenizer stringTokenizer = new StringTokenizer( ipAddress, "." );
while ( stringTokenizer.hasMoreTokens() )  {
  System.out.println( stringTokenizer.nextToken() );
}

java.util.Scanner

edited Oct 27, 2023 at 9:38

Ahmed Ashour

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answered May 14, 2011 at 22:18

Cengiz

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Comments

Fredrik · Accepted Answer · 2011-05-15 21:28:26Z

0

Take a look at String.split() it's equivalent to php's explode()

edited May 15, 2011 at 21:28

answered May 14, 2011 at 20:44

Fredrik

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