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Groups > comp.lang.java.programmer > #38381
| From | Martin Gregorie <martin@mydomain.invalid> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? |
| Date | 2018-06-14 21:40 +0000 |
| Organization | albasani.net |
| Message-ID | <pfund5$6b8$1@news.albasani.net> (permalink) |
| References | <f1d70a92-e43f-4065-8c03-1bcb8782d737@googlegroups.com> <pfrf4m$3i9$1@dont-email.me> <08c836c0-5014-4e7d-8dab-ddf99059e9c7@googlegroups.com> <pfuaka$8v9$1@dont-email.me> <pfub0c$mf6$1@gioia.aioe.org> |
On Thu, 14 Jun 2018 14:09:18 -0400, Arne Vajhøj wrote: > On 6/14/2018 2:02 PM, Knute Johnson wrote: >> On 6/14/2018 01:14, siddareddy.moolam@gmail.com wrote: >>> i need to also check whether the ip is up or down ??? >> >> InetAddress::isReachable is just a ping and only tells you the machine >> is there and responding to pings. Connecting to the server tells you >> the machine is there and the server is running. > > isReachable is one of those methods that one should be very careful > relying too much on. > > It can give both false negatives and false positives. > Indeed it does. On my LAN it says the openjdk version "1.8.0_171"machine its on is reachable but nothing else, internally or externally is. Yet ping can tag all the hosts I've tried it on. And, yes, InetAddress.getByName() successfully resolves these host names to the expected IP addresses. This is with Java openjdk version "1.8.0_171" on Fedora 27 fully patched as of last Friday. -- Martin | martin at Gregorie | gregorie dot org
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How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? siddareddy.moolam@gmail.com - 2018-06-13 03:39 -0700
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2018-06-13 11:01 -0500
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2018-06-13 11:06 -0500
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? siddareddy.moolam@gmail.com - 2018-06-13 23:14 -0700
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2018-06-14 13:02 -0500
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? Arne Vajhøj <arne@vajhoej.dk> - 2018-06-14 14:09 -0400
Re: How to give ip address as a input on java...if I give ip addrees as a input need to display ip adress present in the server or not??? Martin Gregorie <martin@mydomain.invalid> - 2018-06-14 21:40 +0000
i need to check whether particular ip adress is up or down can anybody help me?? siddareddy.moolam@gmail.com - 2018-06-13 23:16 -0700
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