Java Code Examples not working | java.net.UnknownHostException

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Question by davly182 · Mar 10, 2017 at 05:16 AM · java unknownhost

Java Code Examples not working | java.net.UnknownHostException

Hi,

I just download "Java Code Examples" and I try to run it on my eclipse with

jdk8 and my user/login datascope.

But when I try to run this program I have this error :

java.net.UnknownHostException: hosted.datascopeapi.reuters.com

On internet explorer I can access to it, but when I ping in windows prompt I have host unknow.

How can I do?

Do I have to ask changes for proxy/dns at my work place?

Please help.

David LY.

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Answer 1 · 2017-03-10T10:37:04Z

REFINITIV

Best Answer

Answer by Gurpreet · Mar 10, 2017 at 10:37 AM

@davly182

From the description, it looks like your machine is behind a proxy/firewall.

You will have to modify the DSS sample to allow for the proxy server -- something like:

HttpHost proxy = new HttpHost(proxy_ip_address, proxy_port);
httpclient.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);

See Apache HTTP client for more information.

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Answer 2 · 2017-03-10T10:05:54Z

Answer by Lars-at-Addicticks · Mar 10, 2017 at 10:05 AM

It means your Java application cannot resolve "hosted.datascopeapi.reuters.com" into an IP address. It doesn't mean the address cannot be accessed, it means it cannot be resolved. Can you do a successful resolve from Windows command prompt:

nslookup hosted.datascopeapi.reuters.com

??

On my machine it returns the IP : 192.165.219.152.

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Answer 3 · 2017-03-10T11:01:38Z

Answer by davly182 · Mar 10, 2017 at 11:01 AM

Thanks Lars-at-Addicticks and Gurpreet.

no IP for the commande, and I'm not administrator of my computer.

I contacted my workplace to resolve it.

thanks.

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Java Code Examples not working | java.net.UnknownHostException

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