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Editorial Team
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Asked: 2026-05-13T19:22:01+00:00

Greetings all, I am trying to download ‘gz’ file using URL class .Code snippet

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Greetings all,

I am trying to download ‘gz’ file using URL class .Code snippet is as:

URL url = new URL("ftp://ftp.wwpdb.org/pub/pdb/data/structures/all/pdb/pdb132l.ent.gz");
InputStream conn = new GZIPInputStream(url.openStream());

But it throws the error:

Exception in thread “main”
java.net.UnknownHostException:
http://ftp.wwpdb.org at
java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
at
java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at
java.net.Socket.connect(Socket.java:525)
at
java.net.Socket.connect(Socket.java:475)

What could be the issue?

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1 Answer

  1. Editorial Team

    I copy-pasted your code and it downloads the file on my machine. You probably have a network problem.

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