Re: PostgreSQL
i'm very sorry, the language is portuguese, BRASIL. I sent message to various lists here in Brasil, and I forgot to make an English version with the portuguese version, i'm not a good English speaker/writer, so here my doubt on your language. :-))) port > alguem tem algum programa de exemplo ou pode fazer um pra mim de sistema JAVA conectando um banco de dados PostgreSQL...eu seria muitissimo grato... eng > anybody has an example how to make an application in JAVA using a PostgreSQL database...thanks in advance... []'s Marcos Seoane *** Separador de Resposta *** Em 06/08/99 as 13:46 Pepijn Schmitz escreveu: >What language is that?! And how many people do you think are on the list that speak >it, versus the number of people who speak English? > >/Pepijn > >Marcos Seoane wrote: > >> alguem tem algum programa de exemplo ou pode fazer um pra mim de sistema JAVA >conectando um banco de dados PostgreSQL...eu seria muitissimo grato... >> >> []'s >> Marcos Seoane >> >> -- >> To UNSUBSCRIBE, email to [EMAIL PROTECTED] >> with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Bad sync problem??
Everytime I hear someone say that adding thread yeilds or sleeps or changing priorities "fixed" the threading problems in a green threads implementation I immediately think they're depending on non-spec thread behavior. So far I haven't been wrong on the cases that have been dug into. Your imperical evidence of ok behavior on platforms other than Linux is also imperical evidence of ok behavior on threading models other than green. I've never seen a green thread windows jvm, and haven't seen green threads solaris since 112 time frame. Try -native with your original code, I suspect it will work much better. cabbey at home dot net <*> http://members.home.net/cabbey I want a binary interface to the brain! Today's opto-mechanical digital interfaces are just too slow! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
RE: Bad sync problem??
Thanks. I agree that there's a non-zero probability of a bug in my code, but being a lazy programmer I thought I'd ask the question first. Bob -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Matt Welsh Sent: Thursday, August 05, 1999 15:55 To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED] Subject: Re: Bad sync problem?? With an application of this complexity it seems a lot more likely that there is a deadlock or other synchronization bug in your own code, rather than something wrong with the (relatively straightforward) implementation of thread synchronization in the JDK. If you can come up with a simple example program which The fact that you haven't seen this problem under Solaris or WinNT isn't a good argument for a bug in the Linux JDK; these things may be cropping up due to race conditions, or else differing (but correct!) implementations of the threading system. Matt Welsh "R.W. Shore" <[EMAIL PROTECTED]> writes: > I suspect that there's a bad problem with thread > synchronization. Has anybody else seen similar symptoms?? > > Platform: Cyrix M-II running RedHat 6.0 > JDK: 1.1.7 from Blackdown > Green threads, default JIT setting (on?) > Classes compiled with JDK 1.1.6 on a WinNT platform > (VisualCafe) > > Problem: I've got an application that, among other things, > maintains an "event log". Since the log entries can go to > several places, including but not limited to a local file, > and since I didn't want the logging threads to have to wait, > I put the logging into a separate thread. The interface > between the log-maintenance thread and the rest of the app > is a "bucket" object, which is a limited-size FIFO queue. A > thread can put a log request into the bucket; the > log-maintenance thread extracts the request from the bucket, > processes it, and loops back to get the next request. The > bucket uses synchronized blocks with wait() and notifyAll() > calls to coordinate the maintenance thread with the other > threads. This approach has worked fine on WinNT and Solaris > 2.7. > > The first thing I noticed when running the app on the > Blackdown JDK was mysterious hangs. To fix this, I first > inserted some yield() calls outside the synchronized blocks, > after each bucket put and get. This helped but didn't > completely solve the problem. I then modified the > maintenance thread so that it runs at a thread priority of > 1+whatever the default is -- no more hangs. Hmmm... > > Now, the actual environment involves three separate > platforms. Call 'em A, L, and C, where L is the Linux > platform. Platform A sends a request to L via CORBA, which > processes it and sends the result to C. All three platforms > maintain logs of requests. What I'm seeing now is an > occasional double logging on L. That is, A logs requests 1, > 2, and 3; C logs results 1, 2, and 3; but L logs processing > 1, 2, 2, and 3. Keep in mind that I don't see any such > behavior on either WinNT or Solaris. Hmmm... > > I'm concluding that there's something seriously wrong with > thread synchronization, at least on this platform. Proper > synchronization of threads is critical to this application, > and I'm starting to wonder if there are other processing > anomalies on the Linux box that I'm simply not seeing. > Although I haven't made extensive tests, the problem doesn't > appear to be JIT related -- at least, the original app hangs > persisted when I turned the JIT off (java.compiler=NONE). > > My questions include: > > o Has anybody seen similar synchronization behavior? > > o Anybody want to venture an opinion on the likelihood of a > chip-related problem vs a JDK-related one? > > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] > -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
UnsatisfiedLinkError: no awt in shared library path?!
Hi, When trying to run the weblogic 4.02 console on RH 5.2 (i386, kernel 2.2.6, java 1.1.7v3, swing 1.0.3, commandline: java -ms32m -mx32m weblogic.Console) it dies with the following message: /usr/local/java/lib/i686/green_threads/libawt.so: undefined symbol: XtShellStrings (libawt.so) no awt in shared library path java.lang.UnsatisfiedLinkError: no awt in shared library path at java.lang.Runtime.loadLibrary(Runtime.java) at java.lang.System.loadLibrary(System.java) at at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:394) at java.awt.Font.initializeFont(Font.java:106) at java.awt.Font.(Font.java:121) at com.sun.java.swing.plaf.FontUIResource.(FontUIResource.java:47) at com.sun.java.swing.plaf.metal.DefaultMetalTheme.(DefaultMetalTheme.java:50) at com.sun.java.swing.plaf.metal.MetalLookAndFeel.createDefaultTheme(MetalLookAndFeel.java:598) at com.sun.java.swing.plaf.metal.MetalLookAndFeel.getDefaults(MetalLookAndFeel.java:602) at com.sun.java.swing.UIManager.setLookAndFeel(UIManager.java:318) at com.sun.java.swing.UIManager.setLookAndFeel(UIManager.java:341) at com.sun.java.swing.UIManager.initializeDefaultLAF(UIManager.java:587) at com.sun.java.swing.UIManager.initialize(UIManager.java:664) at com.sun.java.swing.UIManager.maybeInitialize(UIManager.java:672) at com.sun.java.swing.UIManager.getDefaults(UIManager.java:391) at com.sun.java.swing.UIManager.getColor(UIManager.java:400) at com.sun.java.swing.JPanel.(JPanel.java:68) at com.sun.java.swing.JPanel.(JPanel.java:109) at com.sun.java.swing.JRootPane.createGlassPane(JRootPane.java:225) at com.sun.java.swing.JRootPane.(JRootPane.java:181) at com.sun.java.swing.JApplet.createRootPane(JApplet.java:122) at com.sun.java.swing.JApplet.(JApplet.java:115) at weblogic.admin.T3Cnsl.(T3Cnsl.java:360) at weblogic.admin.T3Cnsl.doMain(T3Cnsl.java:182) at weblogic.admin.T3Cnsl.main(T3Cnsl.java:133) at weblogic.admin.ConsoleStarter.startup(ConsoleStarter.java:16) at weblogic.Console.main(Console.java:41) Various small home made aps that use the AWT work fine, so does the swing example application. What could be wrong? /Pepijn -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: silly question
Well, it's not as silly as one might think. I don't know of any other "official" way than calling ResultSet.next() until it returns false. You can of course send a SQL-COUNT-statement, too - but that's not officially supported and might not be portable. If there's a better way I'd be interested, too. -hendrik - - - - - - - - - - - - - - - - - - - - - - - - - - - The WebApp Frameworkhttp://www.webapp.de/ jo! small&smart 2.1 servletengine Persistence objectrelational mapping Java Server & ServletsThe German servlet book Yohans Mendoza wrote: > I'm new to the JDBC, so this is a silly question for most of you. > > How do you count the number of rows returned in a ResultSet? > > TIA > > --Yohans > > ~ > Yohans Mendoza Unix Administrator > Sirius Images Inc. [EMAIL PROTECTED] > http://www2.utep.edu/~yohanshttp://www.sirius-images.net > ~ > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Newbie question
Hi, I'm new to Java so please bear with me. I am resizing the length of the array of String elements in a JList inside a JScrollPane, but repaint() does not update my UI. Help please... Burn
1.2-prev2 : jdb not working
Hello, I am using the 1.2-prev2 release on a RedHat 6.0 system. When I try to debug something I always get [peter@frodo projects]$ jdb -dbgtrace App1_1 Initializing jdb... [debugger: starting child: /usr/local/jdk1.2/jre/bin/java -Xdebug -Djava.compiler=NONE -Xbootclasspath/a:/usr/local/java/lib/tools.jar sun.tools.agent.EmptyApp] [Internal debugger error: Failed to exec a child java interpreter with this command line: /usr/local/jdk1.2/jre/bin/java -Xdebug -Djava.compiler=NONE -Xbootclasspath/a:/usr/local/java/lib/tools.jar sun.tools.agent.EmptyApp] Exception in thread "main" java.lang.InternalError at sun.tools.debug.RemoteAgent.error(RemoteAgent.java:1409) at sun.tools.debug.RemoteAgent.(RemoteAgent.java:243) at sun.tools.debug.RemoteDebugger.(RemoteDebugger.java:63) at sun.tools.ttydebug.TTY.(TTY.java:1633) at sun.tools.ttydebug.TTY.main(TTY.java:1809) I have disabled the JIT commpiler and enabled green threads in the environment. Can anybody indicate where I should look to get the debugger working? TIA, Peter Tillemans -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Help with JDK 1.2 library problems
Hi all, I'm not an expert on the Linux libraries .. far from it... so if there is a simple solution to this, please forgive my ignorance. I appreciate any assistance. A while ago, I went to install JDK 1.2 pre 1 and realized I needed glibc 2. Rather than mess with installing this on an old system, I waited until I had the time to upgrade the whole thing. Yesterday, I downloaded Slackware 4.0, which I figured would have the latest libraries, wiped my system clean, and installed it. The installation went very smoothly, and I was up and running again within the hour. I installed jdk1.2-pre2 for the glibc 2.0. I am able to run SimpleExample from the jdk examples using a command such as: java -green -jar SimpleExample.jar However, if I extract the jar files and try to run it, or if I try to run one of my own applications outside of a jar file, it will not work. It will come back with a message like: Exception in thread "main" java.lang.NoClassDefFoundError: SimpleExample/class The class obviously is present, the classpath is set to include "." using the -cp command, and the same programs (including my own) run fine from within a jar. Another catch is that the jdk1.2 for linux can't seem to create the executable jar files.. it works fine.. but comes back with the same error. If I create the jar on another machine and transfer it, it works. The other problem, I'm sure is something in my libraries. Running without the -green option, attempting native threads (its very slow with just green threads) I get the following: ./jdk1.2/bin/i386/native_threads/java: error in loading shared libraries /lib/libpthread.so.0: undefined symbol: __libc_rewinddir I don't know whether I should download and install the latest linuxthreads library, or the libc library, or where to begin here. When I do a dump of ldconfig -D, there are many warnings similar to the following which I'm not sure apply: ldconfig: warning: /lib/libc-2.0.7.so has inconsistent soname (libc.so.6) ldconfig: warning: /lib/libpthread-0.7.so has inconsistent soname (libpthread.so.0) Thanks for any assistance offered. - Tim Stewart. Here is a dump of the ldconfig -D: ldconfig: version 1.9.9 /usr/local/lib: /usr/X11R6/lib: libMagick.so.4 => libMagick.so.4.0.22 libXpm.so.4 => libXpm.so.4.11 libXtst.so.6 => libXtst.so.6.1 libXt.so.6 => libXt.so.6.0 libXp.so.6 => libXp.so.6.2 libXmu.so.6 => libXmu.so.6.0 libXi.so.6 => libXi.so.6.0 libXext.so.6 => libXext.so.6.3 libXaw.so.6 => libXaw.so.6.1 libXIE.so.6 => libXIE.so.6.0 libX11.so.6 => libX11.so.6.1 libSM.so.6 => libSM.so.6.0 libPEX5.so.6 => libPEX5.so.6.0 libICE.so.6 => libICE.so.6.3 libXaw3d.so.6 => libXaw3d.so.6.1 libXm.so.1 => libXm.so.1.2.0 libMrm.so.1 => libMrm.so.1.2.0 /usr/lib: libqt.so.1 => libqt.so.1.44 libpng.so.2 => libpng.so.2.1.0.3 libjpeg.so.62 => libjpeg.so.62.0.0 libtiff.so.3 => libtiff.so.3.4 libfbm.so.1 => libfbm.so.1.0.0 librle.so.1 => librle.so.1.0.0 libpbm.so.1 => libpbm.so.1.0.0 libppm.so.1 => libppm.so.1.0.0 libpnm.so.1 => libpnm.so.1.0.0 libpgm.so.1 => libpgm.so.1.0.0 libgtk-1.2.so.0 => libgtk-1.2.so.0.2.0 libgthread-1.2.so.0 => libgthread-1.2.so.0.0.2 libgmodule-1.2.so.0 => libgmodule-1.2.so.0.0.2 libglib-1.2.so.0 => libglib-1.2.so.0.0.2 libgimpui.so.1 => libgimpui.so.1.0.4 libgimp.so.1 => libgimp.so.1.0.4 libgdk-1.2.so.0 => libgdk-1.2.so.0.2.0 libgck.so.1 => libgck.so.1.0.0 libaa.so.1 => libaa.so.1.0.3 libtk8.0.so => libtk8.0.so libtixsam4.1.8.0.so => libtixsam4.1.8.0.so libtix4.1.8.0.so => libtix4.1.8.0.so libtkx8.0.4.so => libtkx8.0.4.so libtclx8.0.4.so => libtclx8.0.4.so libtcl8.0.so => libtcl8.0.so libexpect5.28.so => libexpect5.28.so libpanel.so.3.4 => libpanel.so.1.9.9g libmenu.so.3.4 => libmenu.so.1.9.9g libform.so.3.4 => libform.so.1.9.9g libltdl.so.0 => libltdl.so.0.1.1 libbfd-2.9.1.0.19.so.0 => libbfd-2.9.1.0.19.so.0.0.0 libopcodes-2.9.1.0.19.so.0 => libopcodes-2.9.1.0.19.so.0.0.0 libgpm.so.1 => libgpm.so.1.14 libintl.so.1 => libintl.so.1.0.0 libz.so.1 => libz.so.1.1.3 libstdc++.so.27 => libstdc++.so.27.1.4 libg++.so.27 => libg++.so.27.1.4 libstdc++.so.2.9 => libstdc++.so.2.9.0 libstdc++.so.2.8 => libstdc++.so.2.8.0 libdb.so.1 => libdb.so.1.85.4 /usr/ix86-linux/lib: /usr/ix86-linuxaout/lib: libPEX5.so.6 => libPEX5.so.6.0 libXpm.so.4 => libXpm.so.4.3 libXt.so.6 => libXt.so.6.0 libXaw.so.6 => libXaw.so.6.0 libXIE.so.6 => libXIE.so.6.0 libX11.so.6 => libX11.so.6.0 libXt.so.3 => libXt.so.3.1.0 libXaw.so.3 => libXaw.so.3.1.0 li
Re: Help with JDK 1.2 library problems
Hi ! I'll answer the easier question: To run SimpleExample.class you must type java SimpleExample because the point "." has the same efect than "/" to separate packages and directories. I think that you typed java SimpleExample.class and you get: Exception in thread "main" java.lang.NoClassDefFoundError: SimpleExample/class because java searched the file class.class in the folder SimpleExample Bye -- - (, http://www.geocities.com/Hollywood/Set/8660 /|__--__ |\ '__ `.' / `.,_ _ / ||``._.' .' /|Pere Joan Serra Caldentey .'/\ \ ` `,/ /`,\ [EMAIL PROTECTED] .'.' /| ,' / / | - `- -- `-'- --- -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
[ANNOUNCE]: Press Releases
A new section has been placed on the www.blackdown.org web site for Linux Java related press releases. If your company would like to add one to the page, please let me know. Thanks, Karl Asha [EMAIL PROTECTED] -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Help with JDK 1.2 library problems
> To run SimpleExample.class you must type > > java SimpleExample > > because the point "." has the same efect than "/" to > separate packages and directories I did get SimpleExample to run: java -green -cp "." SimpleExample and was able to run a more complex program using -cp to point to the JAI libraries... so that part is working. I must have done something stupid.. thanks for the reply. Now if i can get these libraries sorted out and get native threads going I might be on the way to getting some production level code going. - Tim Stewart. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: 1.2-prev2 : jdb not working
Peter Tillemans wrote: > Hello, > > I am using the 1.2-prev2 release on a RedHat 6.0 system. > > When I try to debug something I always get > ... > Can anybody indicate where I should look to get the debugger working? Never mind : my fault, I apparently mixed up glibc2.0 and 2.1. I reinstalled and everything works fine now (well at least the debugger starts anyway ;-). > > > TIA, > > Peter Tillemans > > -- > To UNSUBSCRIBE, email to [EMAIL PROTECTED] > with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED] -- Peter Tillemans -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Dead lock in Graphics setFont
Hi I'm dead locking in Graphics on a call to setFont It enters g.setFont and never ruturns theu funny thing is it succeeds many times and this is the only thread in the setFont call ?? I synchronized on the graphics but no luck. java version "1.1.7B" Good call 0 SET FONT CALLED java.awt.Font[family=Dialog,name=Dialog,style=bold,size=12] g=SwingGraphics(0x80ce783) [subGraphics sun.awt.motif.X11Graphics translate [x=0,y=0] clip [x=0,y=0,w=498,h=30] color [r=128,g=128,b=128] font [family=Dialog,name=Dialog,style=plain,size=12]] ENDk FONT CALLED bad CALL 0 SET FONT CALLED java.awt.Font[family=Dialog,name=Dialog,style=plain,size=12] g=SwingGraphics(0x80cd79e) [subGraphics sun.awt.motif.X11Graphics translate [x=0,y=0] clip [x=0,y=0,w=498,h=30] color [r=0,g=0,b=0] font [family=Dialog,name=Dialog,style=plain,size=12]] Nothing ??? SwingGraphics just sets the Font and a instance var I looked. Mike -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Newbie question
Try calling update(). --Jeff > "Bern Rewel L. Mutia" wrote: > > Hi, > > I'm new to Java so please bear with me. > > I am resizing the length of the array of String elements in a JList > inside a JScrollPane, but repaint() does not update my UI. > > Help please... > > Burn > > -- Jeff Galyan http://www.anamorphic.com http://www.sun.com jeffrey dot galyan at sun dot com talisman at anamorphic dot com Sun Certified Java(TM) Programmer == Linus Torvalds on Microsoft and software development: "... if it's a hobby for me and a job for you, why are you doing such a shoddy job of it?" The views expressed herein do not necessarily reflect those of my employer. Sun Microsystems, Inc., has no connection to my involvement with the Mozilla Organization. -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
RPMS and Native threads on RH 6.0
Hello, I have a couple of questions concerning the JDK ports from Blackdown and IBM: 1- Is the Blackdown port Native threads? If so, how do I invoke them? 2- Where can I download the RPM for the Blackdown JDK that actually *works* right after installing on RH 6.0? 3- Is the IBM JDK good at Swing, etc.? Thanks, Michael -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Jav - Oracle Connection
Looks like your JDBC_URL may be malformed...have you tried @zuriqui without the dot in between? Also beware that if your Oracle is on Windoze you can't use a netBIOS name, it has to be a DNS type name. "ping zuriqui" from the shell will verify that the name is recognized. -- David Crooke, Austin TX, USA. +1 (512) 656 6102 "Open source software - with no walls and fences, who needs Windows and Gates?" -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
