I already have a C++ server containing a service that inserts an user to the DB, the service work's great when I test it on console.
But the fact is that I'm developing a Java client application that consumes the service with Apache Axis, unfortunately it doesn't works. I have been searching for information that could help me with this trouble but I don't see any similar implementation.
My Apache Axis files are in /usr/share/java, which is the value of my AXIS2_HOME variable, this, in order to execute:
java -cp $AXIS2_HOME org.apache.axis.wsdl.WSDL2Java -p CrearAlumno http://localhost/CrearAlumno.wsdl
to generate the files, later I execute:
javac -cp $AXIS2_HOME *.java
to compile my files Including the Client Class
//CrearAlumnoClient.java
package CrearAlumno;
import java.rmi.RemoteException;
import javax.xml.rpc.ServiceException;
public class CrearAlumnoClient{
public static void main(String[] args)
{
Input in = new Input("asdf", "adgfsdf", "asdg", 453, "asdf", "asdfasdf", "pasdfsd", "asdfsd");
try{
CrearAlumno_Service service = new CrearAlumno_ServiceLocator();
CrearAlumnoPortType port = service.getCrearAlumno();
String response = port.getInfo(in);
}catch(RemoteException e){
e.printStackTrace();
}catch(ServiceException e){
e.printStackTrace();
}
}
}
but when I excecute:
java CrearAlumno.CrearAlumnoClient
My application throws this errors:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/rpc/ServiceException
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: javax.xml.rpc.ServiceException
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
I have no idea how to solve this errors, I have been searching for an implementation but at this moment, I dont have it.
I will also be pleased if anyone can show me a simply implementation of Axis and gsoap.
Thank you for your attention :).
This looks like a simple case of your classpath not being set up correctly.
There's information on that specific topic here: http://axis.apache.org/axis/java/install.html#Classpath_setup
You need to ensure that the jar file containing javax.xml.rpc.ServiceException is present.
I see you are setting up your classpath using -cp $AXIS2_HOME which won't work. At best if your jars are in $AXIS2_HOME then you will need to do $AXIS2_HOME/*.jar but it all liklihood you'll need to have something more like:
set AXIS_HOME=/usr/axis
set AXIS_LIB=$AXIS_HOME/lib
set AXISCLASSPATH=$AXIS_LIB/axis.jar:$AXIS_LIB/commons-discovery.jar:
$AXIS_LIB/commons-logging.jar:$AXIS_LIB/jaxrpc.jar:$AXIS_LIB/saaj.jar:
$AXIS_LIB/log4j-1.2.8.jar:$AXIS_LIB/xml-apis.jar:$AXIS_LIB/xercesImpl.jar:
$AXIS_LIB/wsdl4j.jar
export AXIS_HOME; export AXIS_LIB; export AXISCLASSPATH
Then invoke your application with:
java -cp $AXISCLASSPATH
With regards to integration between Axis and Gsoap it really should be quite straightforward. There shouldn't really be any special interventions required because you're crossing between java and c world - at least for simple use-cases.
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I'm trying to make a simple Xbee example on my Raspberry Pi 3 work, using the XBee Java Lib and its tutorial, but I want to execute it before transforming it to a .jar file. I want just to execute it as a .class file, very simple, after that I want to import it to another project. (I'm not good with Java, as it's possible to see)
After compiling I tried to execute it as:
java -cp $XBJL_CLASS_PATH:. com.digi.xbee.example.MainApp
my echo $XBJL_CLASS_PATH is:
libs/xbee-java-library-1.2.1.jar:libs/rxtx-2.2.jar:libs/slf4j-api-1.7.12.jar:libs/slf4j-nop-1.7.12.jar:libs/android-sdk-5.1.1.jar:libs/android-sdk-addon-3.jar
Which means all .jar avaiable to use from the XBee Java Lib.
It didn't work.I've also tried just:
java com.digi.xbee.example.MainApp
And I'm always getting the same error:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.NoClassDefFoundError: com/digi/xbee/api/XBeeDevice
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: com.digi.xbee.api.XBeeDevice
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
Does anybody know what could be happenning? It's saying I haven't imported the XBeeDevice, which I did, importing the libs/xbee-java-library-1.2.1.jar.
PS: The code starts with this:
package com.digi.xbee.example;
import com.digi.xbee.api.WiFiDevice;
import com.digi.xbee.api.XBeeDevice;
import com.digi.xbee.api.exceptions.XBeeException;
import com.digi.xbee.api.models.XBeeProtocol;
public class MainApp {
/* Constants */
// TODO Replace with the port where your sender module is connected to.
private static final String PORT = "/dev/ttyAMA0/";
// TODO Replace with the baud rate of your sender module.
private static final int BAUD_RATE = 9600;
private static final String DATA_TO_SEND = "Hello XBee World!";
public static void main(String[] args) {
XBeeDevice myDevice = new XBeeDevice(PORT, BAUD_RATE);
byte[] dataToSend = DATA_TO_SEND.getBytes();
try {
myDevice.open();
System.out.format("Sending broadcast data: '%s'", new String(dataToSend));
if (myDevice.getXBeeProtocol() == XBeeProtocol.XBEE_WIFI) {
myDevice.close();
myDevice = new WiFiDevice(PORT, BAUD_RATE);
myDevice.open();
((WiFiDevice)myDevice).sendBroadcastIPData(0x2616, dataToSend);
} else
myDevice.sendBroadcastData(dataToSend);
System.out.println(" >> Success");
} catch (Exception e) {
System.out.println(" >> Error");
e.printStackTrace();
System.exit(1);
}
finally {
myDevice.close();
}
}
}
Thanks in advance.
I've made it through. :D
I had to put in my CLASSPATH the absolute libs path, like /home/pi/.../libs/xbee-java-library-1.2.1.jar:...
After that I had another error, saying about the RXTX lib. To get through that one, I need to do an sudo apt-get install librxtx-java as it said here
java.library.path location
and run it like this:
java -Djava.library.path=/usr/lib/jni -cp $XBJL_CLASS_PATH:. com.digi.xbee.example.MainApp
Hope it helps someone.
I created a new maven project in Eclipse and on runtime I get this error:
Exception in thread "main" java.lang.NoClassDefFoundError: =
Caused by: java.lang.ClassNotFoundException: =
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
Could not find the main class: =. Program will exit.
In other threads the class is mentioned where the problem occurs but here it simply says nothing.
The code is also used in a different project (with slight tweaks in terms of calling a method) but the rest of it is same.
If anyone can help me resolve this issue..it will be highly appreciated.
It looks like something is passing in = as the class name. It doesn't say nothing - it says =.
For example, when I run:
java =
I get:
Error: Could not find or load main class =
There's no colon, but it's otherwise the same.
Look at where you're trying to specify the class name, and see whether there's a stray = around. For example, suppose you had:
java -Dfoo = bar ClassName
instead of
java -Dfoo=bar ClassName
You'd see the same thing. I'm not familiar with Maven, but if you ever specify a set of arguments in it, I'd look at that part of the configuration file.
Deleting the workspace worked for me.
I modified a Java code in Eclipse on my laptop with a Windows O.S. Now I have to run the code on a linux O.S. via SSH. I copied all the files and I tried to compile the code. The compilation went well, so there were no errors in the code. Anyway, when I tried to run it, the following errors appeared on the shell:
[ac6411#epigenetic models]$ java TanaModel
Exception in thread "main" java.lang.NoClassDefFoundError: TanaModel (wrong name: models/TanaModel)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
at java.net.URLClassLoader.access$000(URLClassLoader.java:56)
at java.net.URLClassLoader$1.run(URLClassLoader.java:195)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Do you know what kind of the problem is?I'm new in Java coding, so I don't know how to solve it. Thank you.
wrong name: models/TanaModel
This means it expected to find TanaModel.class under the models directory, but found it somewhere else (maybe the current directory?). Put the class file in a the models directory, and run it as
java models.TanaModel
Java expects class files to be organized in directories that mirror the package structure you used in your source code.
java.lang.NoClassDefFoundError: TanaModel (wrong name: models/TanaModel) at
What command did you run, I'm guessing java TanaModel ?
Most likely your TanaModel is declared to be in package models;
Try calling it like this:
java models.TanaModel
If it is a Eclipse security issue, this would help.
//Java Code
try
{
AccessController.doPrivileged(new PrivilegedAction<Object>()
{
public Object run()
{
try
{
// Insert code here to do required action (get or open file)
}
catch (Exception e)
{
// Insert code to catch exception from trying to do above action
}
}
}
);
}
catch(Exception e)
{
// Insert code to catch failed doPrivileged()
}
When you try to run your program, try calling it like this:
java models.TanaModel
I'm running into a problem with a java app constantly throwing:
java.lang.NoClassDefFoundError: Could not initialize class java.net.ProxySelector.
I am running Suse Linux 10.3 and running java 1.6.0. My CLASSPATH is set to
/usr/lib/jvm/jre-1.6.0-openjdk/lib.
No other users seem to be having this error so I'm assuming its my setup. For those wondering the app is yamj (http://code.google.com/p/moviejukebox/)
Any ideas as to what maybe missing or what I maybe doing wrong?
Edit the full trace of the error is as follows:
java.lang.NoClassDefFoundError: Could not initialize class java.net.ProxySelector
at sun.net.www.protocol.http.HttpURLConnection$5.run(HttpURLConnection.java:736)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:732)
at sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:672)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:997)
at com.moviejukebox.thetvdb.tools.XMLHelper.getEventReader(XMLHelper.java:19)
at com.moviejukebox.thetvdb.model.Mirrors.(Mirrors.java:30)
at com.moviejukebox.thetvdb.TheTVDB.(TheTVDB.java:37)
at com.moviejukebox.plugin.TheTvDBPlugin.(TheTvDBPlugin.java:57)
at sun.reflect.GeneratedConstructorAccessor2.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:532)
at java.lang.Class.newInstance0(Class.java:372)
at java.lang.Class.newInstance(Class.java:325)
at com.moviejukebox.plugin.DatabasePluginController.getMovieDatabasePlugin(DatabasePluginController.java:96)
at com.moviejukebox.plugin.DatabasePluginController.access$000(DatabasePluginController.java:30)
at com.moviejukebox.plugin.DatabasePluginController$1.initialValue(DatabasePluginController.java:44)
at com.moviejukebox.plugin.DatabasePluginController$1.initialValue(DatabasePluginController.java:39)
at java.lang.ThreadLocal.setInitialValue(ThreadLocal.java:160)
at java.lang.ThreadLocal.get(ThreadLocal.java:150)
at com.moviejukebox.plugin.DatabasePluginController.scan(DatabasePluginController.java:70)
at com.moviejukebox.MovieJukebox.updateMovieData(MovieJukebox.java:1051)
at com.moviejukebox.MovieJukebox.access$100(MovieJukebox.java:80)
at com.moviejukebox.MovieJukebox$4.call(MovieJukebox.java:613)
at com.moviejukebox.MovieJukebox$4.call(MovieJukebox.java:600)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334)
at java.util.concurrent.FutureTask.run(FutureTask.java:166)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java
ProxySelector is an abstract class. Are you trying to instantiate it directly?
My CLASSPATH is set to
/usr/lib/jvm/jre-1.6.0-openjdk/lib.
don't think that should be in your CLASSPATH
try clearing the CLASSPATH and running it
Firstly, you shouldn't have to put "/usr/lib/jvm/jre-1.6.0-openjdk/lib" on your classpath. The "java" command should put all of the standard J2SE libraries on the bootclasspath without you doing anything.
Second, it would help if you gave us the full stacktrace, not just the exception message. I suspect that the real problem is that java.net.ProxySelector (or something it depends on) is failing during static initialization. But only a stacktrace would confirm that.
Since it's second result in google search on this error, I want to post this piece of code I found at some forum that helped me with the same exception. Cannot explain in details - it was just a quick test project for me, so I didn't have time for deeper investigation.
static {
try {
Class c = Class.forName("sun.net.spi.DefaultProxySelector");
if (c != null && ProxySelector.class.isAssignableFrom(c)) {
theProxySelector = (ProxySelector) c.newInstance();
}
} catch (Exception e) {
theProxySelector = null;
}
}
I have great doubts about this forum, but I am willing to be pleasantly surprised ;) Kudos and great karma to those who get me back on track.
I am attempting to use the blitz implementation of JavaSpaces (http://www.dancres.org/blitz/blitz_js.html) to implement the ComputeFarm example provided at http://today.java.net/pub/a/today/2005/04/21/farm.html
The in memory example works fine, but whenever I attempt to use the blitz out-of-box implementation i get the following error:
(yes com.sun.jini.mahalo.TxnMgrProxy is in the class path)
2008-09-24 09:57:37.316 ERROR [Thread-4] JavaSpaceComputeSpace 155 - Exception while taking task.
java.rmi.ServerException: RemoteException in server thread; nested exception is:
java.rmi.UnmarshalException: unmarshalling method/arguments; nested exception is:
java.lang.ClassNotFoundException: com.sun.jini.mahalo.TxnMgrProxy
at net.jini.jeri.BasicInvocationDispatcher.dispatch(BasicInvocationDispatcher.java:644)
at com.sun.jini.jeri.internal.runtime.ObjectTable$6.run(ObjectTable.java:597)
at net.jini.export.ServerContext.doWithServerContext(ServerContext.java:103)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch0(ObjectTable.java:595)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.access$700(ObjectTable.java:212)
at com.sun.jini.jeri.internal.runtime.ObjectTable$5.run(ObjectTable.java:568)
at com.sun.jini.start.AggregatePolicyProvider$6.run(AggregatePolicyProvider.java:527)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch(ObjectTable.java:565)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch(ObjectTable.java:540)
at com.sun.jini.jeri.internal.runtime.ObjectTable$RD.dispatch(ObjectTable.java:778)
at net.jini.jeri.connection.ServerConnectionManager$Dispatcher.dispatch(ServerConnectionManager.java:148)
at com.sun.jini.jeri.internal.mux.MuxServer$2.run(MuxServer.java:244)
at com.sun.jini.start.AggregatePolicyProvider$5.run(AggregatePolicyProvider.java:513)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.jini.jeri.internal.mux.MuxServer$1.run(MuxServer.java:241)
at com.sun.jini.thread.ThreadPool$Worker.run(ThreadPool.java:136)
at java.lang.Thread.run(Thread.java:595)
at com.sun.jini.jeri.internal.runtime.Util.__________EXCEPTION_RECEIVED_FROM_SERVER__________(Util.java:108)
at com.sun.jini.jeri.internal.runtime.Util.exceptionReceivedFromServer(Util.java:101)
at net.jini.jeri.BasicInvocationHandler.unmarshalThrow(BasicInvocationHandler.java:1303)
at net.jini.jeri.BasicInvocationHandler.invokeRemoteMethodOnce(BasicInvocationHandler.java:832)
at net.jini.jeri.BasicInvocationHandler.invokeRemoteMethod(BasicInvocationHandler.java:659)
at net.jini.jeri.BasicInvocationHandler.invoke(BasicInvocationHandler.java:528)
at $Proxy0.take(Unknown Source)
at org.dancres.blitz.remote.BlitzProxy.take(BlitzProxy.java:157)
at compute.impl.javaspaces.JavaSpaceComputeSpace.take(JavaSpaceComputeSpace.java:138)
at example.squares.SquaresJob.collectResults(SquaresJob.java:47)
at compute.impl.AbstractJobRunner$CollectThread.run(AbstractJobRunner.java:28)
Caused by: java.rmi.UnmarshalException: unmarshalling method/arguments; nested exception is:
java.lang.ClassNotFoundException: com.sun.jini.mahalo.TxnMgrProxy
at net.jini.jeri.BasicInvocationDispatcher.dispatch(BasicInvocationDispatcher.java:619)
at com.sun.jini.jeri.internal.runtime.ObjectTable$6.run(ObjectTable.java:597)
at net.jini.export.ServerContext.doWithServerContext(ServerContext.java:103)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch0(ObjectTable.java:595)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.access$700(ObjectTable.java:212)
at com.sun.jini.jeri.internal.runtime.ObjectTable$5.run(ObjectTable.java:568)
at com.sun.jini.start.AggregatePolicyProvider$6.run(AggregatePolicyProvider.java:527)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch(ObjectTable.java:565)
at com.sun.jini.jeri.internal.runtime.ObjectTable$Target.dispatch(ObjectTable.java:540)
at com.sun.jini.jeri.internal.runtime.ObjectTable$RD.dispatch(ObjectTable.java:778)
at net.jini.jeri.connection.ServerConnectionManager$Dispatcher.dispatch(ServerConnectionManager.java:148)
at com.sun.jini.jeri.internal.mux.MuxServer$2.run(MuxServer.java:244)
at com.sun.jini.start.AggregatePolicyProvider$5.run(AggregatePolicyProvider.java:513)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.jini.jeri.internal.mux.MuxServer$1.run(MuxServer.java:241)
at com.sun.jini.thread.ThreadPool$Worker.run(ThreadPool.java:136)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.lang.ClassNotFoundException: com.sun.jini.mahalo.TxnMgrProxy
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at net.jini.loader.pref.PreferredClassLoader.loadClass(PreferredClassLoader.java:922)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:242)
at net.jini.loader.pref.PreferredClassProvider.loadClass(PreferredClassProvider.java:613)
at java.rmi.server.RMIClassLoader.loadClass(RMIClassLoader.java:247)
at net.jini.loader.ClassLoading.loadClass(ClassLoading.java:138)
at net.jini.io.MarshalInputStream.resolveClass(MarshalInputStream.java:296)
at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1544)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1466)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1699)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1908)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1832)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1719)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at com.sun.jini.jeri.internal.runtime.Util.unmarshalValue(Util.java:221)
at net.jini.jeri.BasicInvocationDispatcher.unmarshalArguments(BasicInvocationDispatcher.java:1049)
at net.jini.jeri.BasicInvocationDispatcher.dispatch(BasicInvocationDispatcher.java:599)
... 17 more
So com.sun.jini.mahalo.TxnMgrProxy is contained in some jar, that is contained in your CLASSPATH environment variable.
But probably your are using some script to start the server. And this most probably starts java by specifying a "-classpath" commandline switch which takes precendence over your environment CLASSPATH variable.
http://java.sun.com/j2se/1.4.2/docs/tooldocs/windows/classpath.html
You can simulate this by executing:
javap -classpath someUnknownJar.jar com.sun.jini.mahalo.TxnMgrProxy
... and suddenly the class cannot be found anymore. So can you please try and find out the way the java VM of the client and server are started and provide the complete command line.
(If you are using some kind of script just add an "echo ..." in front of the java command and paste the output in here).
This looks like an RMI classloading issue. It appears that the server process is trying to unmarshal the TxnMgrProxy object that is getting passed to it (I don't know the specifics of the example, I'm kind of guessing from the stack trace). That object needs to be annotated with a codebase where the class definition can be found. You probably need to make sure that Mahalo is started with the java.rmi.server.codebase property pointing to a URL where mahalo-dl.jar (or some JAR holding the class definition) can be downloaded.
Even if the JAR is available locally, it might not be enough. The PreferredClassProvider (it's buried in the stack trace) usurps the normal Java classloader delegation scheme, so even if the class is there locally, it'll still want to pull the definition through the codebase.
These are tough problems to figure out. Hope I hit on something close to the answer. Good luck.
Well, your java spaces server does not seem to find the class:
com.sun.jini.mahalo.TxnMgrProxy.
So I guess you just have to add Mahalo (should be included in the blitz distribution according to this: http://www.dancres.org/blitz/blitz_inst.html page) to your classpath when starting the server.
Please post some more information about how you are starting your server, if this advice does not help.
Make sure that you specify -Djava.security.policy=/wherever/policy.all and -Djava.security.manager= You may also have to have the RMI code server running.
Please note my original post:yes com.sun.jini.mahalo.TxnMgrProxy is in the class path
if you are familiar with javap -- if you specify a fully qualified class name it will determine whether or not it is on the class path.
this is the result that I get when running javap com.sum.jini.mahalo.TxnMgrProxy:
C:\dev\jini\blitz>javap com.sun.jini.mahalo.TxnMgrProxy
Compiled from "TxnMgrProxy.java"
class com.sun.jini.mahalo.TxnMgrProxy extends java.lang.Object implements net.jini.core.transaction.server.TransactionManager,net.jini.admin.Admi
nistrable,java.io.Serializable,net.jini.id.ReferentUuid{
final com.sun.jini.mahalo.TxnManager backend;
final net.jini.id.Uuid proxyID;
static com.sun.jini.mahalo.TxnMgrProxy create(com.sun.jini.mahalo.TxnManager, net.jini.id.Uuid);
public net.jini.core.transaction.server.TransactionManager$Created create(long) throws net.jini.core.lease.LeaseDeniedException, java.r
mi.RemoteException;
public void join(long, net.jini.core.transaction.server.TransactionParticipant, long) throws net.jini.core.transaction.UnknownTransacti
onException, net.jini.core.transaction.CannotJoinException, net.jini.core.transaction.server.CrashCountException, java.rmi.RemoteException;
public int getState(long) throws net.jini.core.transaction.UnknownTransactionException, java.rmi.RemoteException;
public void commit(long) throws net.jini.core.transaction.UnknownTransactionException, net.jini.core.transaction.CannotCommitException,
java.rmi.RemoteException;
public void commit(long, long) throws net.jini.core.transaction.UnknownTransactionException, net.jini.core.transaction.CannotCommitExce
ption, net.jini.core.transaction.TimeoutExpiredException, java.rmi.RemoteException;
public void abort(long) throws net.jini.core.transaction.UnknownTransactionException, net.jini.core.transaction.CannotAbortException, j
ava.rmi.RemoteException;
public void abort(long, long) throws net.jini.core.transaction.UnknownTransactionException, net.jini.core.transaction.CannotAbortExcept
ion, net.jini.core.transaction.TimeoutExpiredException, java.rmi.RemoteException;
public java.lang.Object getAdmin() throws java.rmi.RemoteException;
public net.jini.id.Uuid getReferentUuid();
public int hashCode();
public boolean equals(java.lang.Object);
com.sun.jini.mahalo.TxnMgrProxy(com.sun.jini.mahalo.TxnManager, net.jini.id.Uuid, com.sun.jini.mahalo.TxnMgrProxy$1);
}