Re: [jnc-users] NullPointerException in HTTPUrlConnection

[Marco T. <ma...@mt...>]

Hello André

André 'streeto' Amorim wrote:
> Hi, I just had the same problem Avi Cohen reported a couple months ago. 
> Using a url that does not exist leads to a NPE. The code I used for 
> testing is almost the same:
> 
> import java.net.URL;
> import java.net.URLConnection;
> 
> public class URLConnectionTest {
>     static public void main(String[] args) {
>         try {
>             URL u = new URL("http://www.hasdklashdklj.com/");
>             System.out.println(u);
>             URLConnection c = u.openConnection();
>             System.out.println(c);
>             c.connect();
>             System.out.println("done");
>         } catch (Exception e) {
>             System.out.println("nono");
>             e.printStackTrace();
>         }
>     }
> }
> 
> Here's the setup:
> 
> JNC-1.1.1
> gcc-122233
> Using Windows XP
> Compiling for Windows
> Compiling from source
> Config:
> Not excluding JCE
> Not optimizing
> Not stripping
> Not packing
> All the other options are the default  (new project)
> 
> Here's the output:
> 
> A. exclude JCE, add GNU regex
> 
> http://www.hasdklashdklj.com/
> nono
> java.lang.NullPointerException
>    at 
> java.net.URLConnection.toString(/usr/local/src/gcc/libjava/classpath/java/net/URLConnection.java:627)
>    at 
> java.io.PrintStream.println(/usr/local/src/gcc/libjava/java/io/PrintStream.java:473)
>    at URLConnectionTest.main(C:/DOCUME~1/andre/CONFIG~1/Temp/ccOsbaaa.jar:0)
> 
> 
> B. not excluding JCE, not adding GNU regex (does not seem to interfer, 
> tried with and without)
> 
> http://www.hasdklashdklj.com/
> gnu.java.net.protocol.http.HTTPURLConnection:http://www.hasdklashdklj.com/
> nono
> java.lang.NullPointerException
>    <<No stacktrace available>>
> 
> 
> The output in eclipse is
> 
> http://www.hasdklashdklj.com/
> sun.net.www.protocol.http.HttpURLConnection:http://www.hasdklashdklj.com/
> nono
> java.net.UnknownHostException: www.hasdklashdklj.com 
> <http://www.hasdklashdklj.com>
>     at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
> (...)
> 
> 
> Anybody has a workaround? I can't find a way to check the URL without 
> using URL.openConnection().

maybe:
try { ... } catch(NullPointerException ex) { /* illegal url */ }
?


Marco

> []s
> 
> André.
> 
> 
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