Re: Probel with running jswat, java.lang.NullPointerException thrown during JVM load.

 --- Nathan Fiedler <[email protected]> wrote:
> That is a good question. I do not have any particular solution.
(...)

 Thanks. After adding second line with my host name, like:

 192.168.0.2 SztT 

JSwat works fine.

 regars, Tomasz Sztejka

> However,
> a MacOS X user had a problem related to the host name (as it appears
> you
> have here). His solution was to add the name of his machine to the
> netinfo file. In your case, that would be the /etc/hosts file. On my
> work system (RedHat Linux 7.3), my /etc/hosts file looks like this:
> 
> 127.0.0.1		localhost.localdomain localhost
> 
> While at home my (nearly identical) system has:
> 
> 127.0.0.1		localhost chip
> 192.168.0.2		chip
> 
> Maybe if you modify your /etc/hosts file to be something like mine,
> it
> will work.
> 
> n
> 
> P.S. Yes, even when launching the debuggee from JSwat, the JPDA still
> uses sockets to communicate between the debugger and the debuggee.
> That
> is why it is looking up the host name (and apparently failing).
> 
> 
> On Thu, 2003-03-13 at 11:58, Tomasz Sztejka wrote:
> > Hi, 
> >  I have downloaded Jswat and trying to get it run under Linux. My
> > system is:
> > - Linux Debian 3.0;
> > - j2sdk 1.4.1 from BlackDown.org
> > 
> > Once I start Jswat, choose to open new session with "tutorial"
> class
> > file I'm getting on console window following exception report:
> > 
> > java.lang.NullPointerException
> >         at java.net.InetAddress.cacheAddress(InetAddress.java:648)
> >         at java.net.InetAddress.cacheAddress(InetAddress.java:633)
> >         at
> >
> java.net.InetAddress.getAddressFromNameService(InetAddress.java:1016)
> >         at java.net.InetAddress.getLocalHost(InetAddress.java:1125)
> >         at
> >
>
com.sun.tools.jdi.SocketTransport.startListening(SocketTransport.java:91)
> >         at
> >
>
com.sun.tools.jdi.SocketTransport.startListening(SocketTransport.java:86)
> >         at
> >
>
com.sun.tools.jdi.SunCommandLineLauncher.launch(SunCommandLineLauncher.java:105)
> >         at
> >
>
com.bluemarsh.jswat.VMConnection.launchDebuggee(VMConnection.java:438)
> >         at
> >
>
com.bluemarsh.jswat.action.VMStartAction.actionPerformed(VMStartAction.java:219)
> >         at (... part removed for clarity)
> > java.awt.EventDispatchThread.run(EventDispatchThread.java:99)
> > 
> > Does anyone knows what should I do to get it run? With windows98
> JSwat
> > was running nice, so it is probably something wrong with my system
> > config.
> > Any advice will be welcommed. 
> >  regards,
> >    Tomasz Sztejka.
> 
>  

=====
Tomasz Sztejka
 POLON ALFA
http://www.polon-alfa.com.pl/

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