Re: CLASSPATH problems.
Karthik Vishwanath wrote: > > Hi all, > i use magician with Java as on openGl implementation. I > have the jdk1.1.7 running on Linux RH5.1. Magician requires that i have a > CLASSPATH set. The current value of my CLASSPATH is: > /data/karthik/magician/classes. If I compile a program which uses some > magician classes, the program compiles fine. But, on trying to execute it > with java solarSystem; i get the following error: "Can't find class > solarSystem". The file solarSystem.class *does* exist in my 'pwd'. can > anyone shed some light on what i must do? First of all, what is solarSystem ? Is part of a package, or is a standalone class ? * If is a part of a package, for example, foo, you must execute it with "java foo.solarSystem". If java complaints again, then the packate isn't at the classpath, and you must append _the_parent_ of the directory wich contains the package to the classpath. For example: If you have something like /bar/foo/solarSistem.class, and the package is foo, then you have to do something like (bash speaking, this case) "export CLASSPATH=$CLASSPATH:/bar", and then try "java foo.solarSystem". * If it is a standalone class, not in a package, then I think that somethig like (again bash) "export CLASSPATH=$CLASSPATH:$PWD" should do the trick. Then, you only have to do "java solarSystem", et voiela. > Microsoft isn't the answer. > Microsoft is the question and the answer is NO. I absolutely agree -- Pocas cosas deseariamos ardientemente si conocieramos del todo lo que deseamos François de la Rochefocauld
Printing in Java
hi all !! I'm developing a small application in java, and I need to do some printing. I've been looking at jdk 1.1.6 documentation, but I haven't been able to find anything useful. Does anyone knows where is some good info about this ? -- Pocas cosas deseariamos ardientemente si conocieramos del todo lo que deseamos François de la Rochefocauld
netscape.security.AppletSecurityException
Hi all, I'm still developing my small application (I placed de question about printing a few days ago), and now I have another strange problem. I'm trying to connect via JDBC with a Postgres database. If I run with appletviewer or in a frame as standalone application, everything seems to be all right, the connection takes place succesfully. But if I try to connect from Netscape, I get this exception (with exactly the same code as before). The console logs this: netscape.security.AppletSecurityException: security.Couldn't connect to 'localhost' with origin from 'local-classpath-classes'. at netscape.security.AppletSecurity.checkConnect(AppletSecurity.java:773) at java.lang.SecurityManager.checkConnect(SecurityManager.java:718) at java.net.InetAddress.getAllByName0(InetAddress.java:457) at java.net.InetAddress.getByName(InetAddress.java:367) at java.net.Socket.(Socket.java:123) at postgresql.PG_Stream.(PG_Stream.java:35) at postgresql.Connection.(Connection.java:188) at postgresql.Driver.connect(Driver.java:87) at java.sql.DriverManager.getConnection(DriverManager.java:90) at java.sql.DriverManager.getConnection(DriverManager.java:132) at TestConexion.conexionJDBC(TestConexion.java:82) at TestConexion.init(TestConexion.java:40) * at netscape.applet.DerivedAppletFrame$InitAppletEvent.dispatch(DerivedAppletFrame.java:553) at java.awt.EventDispatchThread$EventPump.dispatchEvents(EventDispatchThread.java:81) at java.awt.EventDispatchThread.run(EventDispatchThread.java:135) at netscape.applet.DerivedAppletFrame$AppletEventDispatchThread.run(DerivedAppletFrame.java:911) I've tried a lot of things. Since Netscape seems to use jdk 1.1.5, I use only awt components to be sure. Should I digitally sign the Applet? Is there any way to disable security checks in Netscape ? Or it's another thing ? Aaaarg !!!
Re: Help!Help!
Hello everybody I think your problem is not about paths. I use 1.1.6 release, and my libjava is in /usr/lib/jdk-1.1.6, so my JAVA_HOME and my JDKHOME variables point to that directory. Have you set these variables properly ? > Arnaldo Riquelme wrote: > > I just downloaded the jdk v.117 . I trying to learn and get around > this new enviroment.(linux) > > A couple of problems > I set my path like so > > export PATH=/home/java/jdk117/bin:$PATH > > I wrote a simple little test Hello Linux!! program to see if it was > working > but I get the following error > >error in loading shared libraries >libjava.so: cannot open shared object file: > No such file or directory > > I also tried specifying the path this way > > export > PATH=/home/java/jdk117/bin/i686/native_threads:$PATH > AND > export > PATH=/home/java/jdk117/lib/i686/native_threads:$PATH > > > What am I doing wrong? > > Any help will be very appreciated. Can't wait to ge this going , so I > can start moving most of my work on NT to Linux. -- Los que ven alguna diferencia entre cuerpo y alma es que carecen de ambos Oscar Wilde -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Just thinking about VM
Hello everybody. These are just a few personal thoughts about java and virtual machines and I thought it could be interesting share them with other linux users. I was just updating my beloved XEmacs, hacking and fixing a few minor problems, configuring my system to the detail -- I really love it. Then I started to think about the lisp machine [ Xl]Emacs holds inside. It's a real virtual machine: bytecompiled, portable and fairly eficient. What's the difference with jvm, for example?. jvm has another language, and a bunch of good libraries to support it. What if lisp (emacs, common, scheme or whatever) had libraries like the java ones ? Lisp is flexible, portable, and applications like gimp use it to create plug-ins wich I think is enough to demonstrate it's power. Also can be Object oriented (flavors, and the like). With communication libraries, GUI, and the free software community could have a free equivalent of Java (a Lisp machine in Mozilla x.xx ?) I like Java (the way I liked Warp, despite BigBlue marketroids) but sometimes I get a bit angry when we suffer Sun rarities. What do you think about it ? Pax ! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Just thinking about VM
Hello everybody. These are just a few personal thoughts about java and virtual machines and I thought it could be interesting share them with other linux users. I was just updating my beloved XEmacs, hacking and fixing a few minor problems, configuring my system to the detail -- I really love it. Then I started to think about the lisp machine [ Xl]Emacs holds inside. It's a real virtual machine: bytecompiled, portable and fairly eficient. What's the difference with jvm, for example?. jvm has another language, and a bunch of good libraries to support it. What if lisp (emacs, common, scheme or whatever) had libraries like the java ones ? Lisp is flexible, portable, and applications like gimp use it to create plug-ins wich I think is enough to demonstrate it's power. Also can be Object oriented (flavors, and the like). With communication libraries, GUI, and the free software community could have a free equivalent of Java (a Lisp machine in Mozilla x.xx ?) I like Java (the way I liked Warp, despite BigBlue marketroids) but sometimes I get a bit angry when we suffer Sun rarities. What do you think about it ? Pax ! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Re: Help!Help!
Hello everybody I think your problem is not about paths. I use 1.1.6 release, and my libjava is in /usr/lib/jdk-1.1.6, so my JAVA_HOME and my JDKHOME variables point to that directory. Have you set these variables properly ? > Arnaldo Riquelme wrote: > > I just downloaded the jdk v.117 . I trying to learn and get around > this new enviroment.(linux) > > A couple of problems > I set my path like so > > export PATH=/home/java/jdk117/bin:$PATH > > I wrote a simple little test Hello Linux!! program to see if it was > working > but I get the following error > >error in loading shared libraries >libjava.so: cannot open shared object file: > No such file or directory > > I also tried specifying the path this way > > export > PATH=/home/java/jdk117/bin/i686/native_threads:$PATH > AND > export > PATH=/home/java/jdk117/lib/i686/native_threads:$PATH > > > What am I doing wrong? > > Any help will be very appreciated. Can't wait to ge this going , so I > can start moving most of my work on NT to Linux. -- Los que ven alguna diferencia entre cuerpo y alma es que carecen de ambos Oscar Wilde -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
java plug-in
Hello everybody I'm trying to develope an applet based application. I was developing with 1.1.6, but I moved to 1.2. Now I find Netscape can't execute my applet (of course I recompiled it). Setting the CLASSPATH to point the rt.jar isn't enough. Then, I started reading about java-plugin, and such. I've seen in $un's pages that there isn't a linux version (it was such a surprise :()!). Does anybody knows some hack to make 1.2 applets work with netscape (I'm using version 4.5) ? Or shall I use.. (ugh, too painfull to mention ;)) Thank, and keep this great work going !!! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
debugging problem
Hi, everybody I'm trying to debug an app using jdb, but I've found a problem (maybe a bug?). When I begin debugging, eveything seems fine, but when the frame appears on the screen (the constructor call has finished and I call setVisible(true) on the frame) the thread finishes, and the debugger ends the session. I used jdb from jdk1.1.6 and I never found this strange problem before. Does anybody knows what I'm doin wrong ? Thanks -- Los que ven alguna diferencia entre cuerpo y alma es que carecen de ambos Oscar Wilde -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
Installer
Hello everybody I'm looking for a free good packager/installer for java. I remember that someone announced a free one in this list, but I've lost my notes, and can't find the message. Could anyone suggest me one ? Perhaps the author is somewhere near ? Thanks -- La felicidad estriba en nuestro placer y no en las cosas; somos felices por poseer lo que amamos y no por poseer lo que los demas juzgan deseable François de la Rochefocauld -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
