How to get the IP address of a machine in Java [duplicate]

Question

Is there a way that I can get the ip address of a machine in Java? To get the IP address from the machine where my jar file is running?

Stephen C · Accepted Answer · 2013-02-23 10:58:02Z

5

The best answer is:

InetAddress.getLocalHost().getHostAddress();

(The getLocalHost method is declared in InetAddress not Inet4Address.)

It is also worth nothing that getLocalHost() does some security checks, so this may not work if your JAR is run in a sandbox.

answered Feb 23, 2013 at 8:36

Stephen C

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4 Comments

I liked it more when @Dan said it.

...or when Stephen said it here :-)

@CameronFredman - I could have simply commented on Dan's answer ... but I decided that what I had to add was worth a new one.

@StephenC My apologies. I was reading that on my phone and didn't catch the InetAddress/Inet4Address distinction.

Dan D. · Accepted Answer · 2013-02-23 07:57:29Z

3

You can get the IP address of your machine using the following call:

Inet4Address.getLocalHost().getHostAddress();

The above is in the Java APIs, so you don't need any jar for that.

answered Feb 23, 2013 at 7:57

Dan D.

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