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java.lang.NoClassDefFoundError: Could not initialize class com.blacklight.common.DBManager

I am trying to connect my service file to cloud sql instance. But I am geeting java.lang.NoClassDefFoundError: Could not initialize class com.blacklight.common.DBManager
Here is my class
package com.blacklight.common;
import com.zaxxer.hikari.HikariConfig;
import com.zaxxer.hikari.HikariDataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.servlet.ServletContextEvent;
import javax.servlet.ServletContextListener;
import javax.servlet.annotation.WebListener;
import javax.sql.DataSource;
import java.io.InputStream;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
#WebListener("Initialize db upon initialization of application context")
public class DBManager implements ServletContextListener {
private static final Logger LOGGER = LoggerFactory.getLogger(DBManager.class);
private static final Object dataSourceLock = new Object();
private static DataSource dataSource = null;
static {
dataSource = initDataSource();
}
private static DataSource initDataSource() {
synchronized (dataSourceLock) {
try {
String username = "aaaa";
String password = "bbbb";
String driverName = "com.mysql.jdbc.Driver";
String instance = "project-Id:location:database-name";
if (dataSource == null) {
HikariConfig config = new HikariConfig();
config.setUsername(username);
config.setPassword(password);
config.setJdbcUrl("jdbc:mysql:///Features");
config.setUsername(username);
config.setPassword(password);
config.setDriverClassName(driverName);
config.setConnectionInitSql("SET NAMES 'utf8mb4'");
config.addDataSourceProperty("socketFactory","com.google.cloud.sql.mysql.SocketFactory");
config.addDataSourceProperty("cloudSqlInstance", instance);
config.addDataSourceProperty("characterEncoding", "UTF-8");
config.addDataSourceProperty("useUnicode", "true");
// config.addDataSourceProperty("noAccessToProcedureBodies", "true");
config.addDataSourceProperty("useSSL", "true");
config.addDataSourceProperty("ipTypes", "PRIVATE,PUBLIC");
config.setMaximumPoolSize(50);
config.setMinimumIdle(5);
config.setConnectionTimeout(10000);
config.setIdleTimeout(600000);
config.setMaxLifetime(1800000);
dataSource = new HikariDataSource(config);
}
return dataSource;
} catch (Exception e) {
System.out.println("Error");
LOGGER.error(e.getMessage(), e);
}
throw new RuntimeException("Couldn't initialize datasource");
}
}
public static Connection getConnection() throws SQLException {
if (dataSource == null) {
dataSource = initDataSource();
}
return dataSource.getConnection();
}
#Override
public void contextInitialized(ServletContextEvent event) {
dataSource = initDataSource();
}
#Override
public void contextDestroyed(ServletContextEvent event) {
if (dataSource != null) {
((HikariDataSource) dataSource).close();
}
}
}
and my error logs are
com.blacklight.common.DBManager initDataSource: Failed to initialize pool: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:596)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:582)
at com.zaxxer.hikari.pool.HikariPool.(HikariPool.java:115)
at com.zaxxer.hikari.HikariDataSource.(HikariDataSource.java:81)
at com.blacklight.common.DBManager.initDataSource(DBManager.java:71)
at com.blacklight.common.DBManager.(DBManager.java:26)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createInstance(ContextHandler.java:2902)
at org.eclipse.jetty.servlet.ServletContextHandler$Context.createInstance(ServletContextHandler.java:1299)
at org.eclipse.jetty.server.handler.ContextHandler$StaticContext.createListener(ContextHandler.java:2913)
at org.eclipse.jetty.servlet.ListenerHolder.doStart(ListenerHolder.java:94)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:369)
at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1449)
at com.google.apphosting.runtime.jetty94.AppEngineWebAppContext.startWebapp(AppEngineWebAppContext.java:274)
at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1414)
at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:916)
at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:288)
at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524)
at com.google.apphosting.runtime.jetty94.AppEngineWebAppContext.doStart(AppEngineWebAppContext.java:218)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:73)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerFactory.doCreateHandler(AppVersionHandlerFactory.java:207)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerFactory.createHandler(AppVersionHandlerFactory.java:125)
at com.google.apphosting.runtime.jetty94.AppVersionHandlerMap.getHandler(AppVersionHandlerMap.java:82)
at com.google.apphosting.runtime.jetty94.JettyServletEngineAdapter.serviceRequest(JettyServletEngineAdapter.java:176)
at com.google.apphosting.runtime.RequestRunner.dispatchServletRequest(RequestRunner.java:264)
at com.google.apphosting.runtime.RequestRunner.dispatchRequest(RequestRunner.java:229)
at com.google.apphosting.runtime.RequestRunner.run(RequestRunner.java:194)
at com.google.apphosting.runtime.ThreadGroupPool$PoolEntry.run(ThreadGroupPool.java:273)
at java.lang.Thread.run(Thread.java:750)
Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1117)
at com.mysql.jdbc.MysqlIO.(MysqlIO.java:350)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2416)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2450)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2235)
at com.mysql.jdbc.ConnectionImpl.(ConnectionImpl.java:818)
at com.mysql.jdbc.JDBC4Connection.(JDBC4Connection.java:46)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:408)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:404)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:307)
at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:138)
at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364)
at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476)
at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561)
... 31 more
Caused by: java.net.ConnectException: Connection timed out (Connection timed out)
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:350)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:206)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:188)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
at java.net.Socket.connect(Socket.java:607)
at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:293)
at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
at com.google.cloud.sql.core.CoreSocketFactory.createSslSocket(CoreSocketFactory.java:275)
at com.google.cloud.sql.core.CoreSocketFactory.connect(CoreSocketFactory.java:229)
at com.google.cloud.sql.core.CoreSocketFactory.connect(CoreSocketFactory.java:188)
at com.google.cloud.sql.mysql.SocketFactory.connect(SocketFactory.java:41)
at com.mysql.jdbc.MysqlIO.(MysqlIO.java:300)

This is caused when there exists a class file in your code which is present at compile-time but not found at run-time. Look for differences in your build time and runtime classpaths.
Here's a simple code to illustrate what your error actually is:
NoClassDefFoundErrorDemo.java
public class NoClassDefFoundErrorDemo {
public static void main(String[] args) {
try {
// The following line would throw ExceptionInInitializerError
SimpleCalculator calculator1 = new SimpleCalculator();
} catch (Throwable t) {
System.out.println(t);
}
// The following line would cause NoClassDefFoundError
SimpleCalculator calculator2 = new SimpleCalculator();
}
}
SimpleCalculator.java
public class SimpleCalculator {
static int undefined = 1 / 0;
}
So actually its happening in this manner :
This differentiates java.lang.ClassNotFoundException and java.lang.NoClassDefFoundError, wherein the ClassNotFoundException shows that the class was not found on the classpath, meaning thereby, that we were trying to load the class definition; and the class did not exist on our classpath.
However, in the latter, which is your case, is when the JVM looked in its internal class definition data structure for the definition of a class and did not find it.
This means that we previously attempted to load a class from the classpath, but it failed for some reason - now we're trying to use the class again (and thus need to load it, since it failed last time), but we're not even going to try to load it, because we failed loading it earlier (and reasonably suspect that we would fail again).
Possible Solutions:-
The class is not available in Java Classpath.
If you are working in J2EE environment than the visibility of Class among multiple Classloader can also cause java.lang.NoClassDefFoundError, see examples and scenario section for detailed discussion.
Check for java.lang.ExceptionInInitializerError in your log file. NoClassDefFoundError due to the failure of static initialization is quite common.
Because NoClassDefFoundError is a subclass of java.lang.LinkageError it can also come if one of it dependency like native library may not available.
Any start-up script is overriding Classpath environment variable.
You might be running your program using jar command and class was not defined in manifest file's ClassPath attribute.
Resources
3 Ways To Solve NoClassDefFoundError
Problem Patterns - NoClassDefFoundError

What are environment properties for Payara InitialContext from free standing Java Client

I've abandoned GlassFish 4-point-anything in favor of Payara41. Amazingly GF has unresolved JDBC and JMS Resources configuration bugs. See:
Glassfish Admin Console throws java.lang.IllegalStateException when creating JDBC Pool
Payara perfectly fixed the JMS configuration issues. So all I need are the environment properties my standalone Java Client needs to get an InitialContext(env) to lookup() those Resources.
Note: InitalContext() doesn't work in a standalone. Only in an EJB Container that can look up the {Payara Home}/glassfish/lib/jndi-properties file. That file has one property so that's what I have in my code below:
Key: "java.naming.factory.initial"
Value: "com.sun.enterprise.naming.impl.SerialInitContextFactory"
That set off a series of NoClassDerfinitionFound Exceptions that led me to add these jars with these classes to my client's buildpath, and to /glassfish/lib/. They are in the order I encountered them.
"glassfish-naming.jar" w/ "com.sun.enterprise.naming.impl.SerialInitContextFactory"
"internal-api-3.1.2.jar" w/ "org.glassfish.internal.api.Globals"
" hk2-api-2.1.46.jar " w/ "org.glassfish.hk2.api.ServiceLocator"
"appserv-rt.jar" from glassfish/lib added to client build path
But now my code throws a java.lang.NoSuchMethodError for Globals.getDefaultHabitat(). Please note, below the Exception doesn't get caught in my catch block. (And I don't see it in Payara's service.log either.)
I know my client finds Globals.class, because adding it caused the NoClassDefinitionFound for ServiceLocator. Are there two "Globals.class" out there ... one w/ and one w/o that method. Or is the "Lorg" in console output really different from "org", i.e. is there a "Lorg/glassfish/hk2/api/ServiceLocator"?
I'm stuck. And this seems such a bread and butter kind of need -- environment properties a standalone Java client needs to get Payara's InitialContext -- it would be nice to be able to add it here for everyone to use (in addition to the jars I've already located.) I'd love to see Payara soar, because I love its Admin Console compared to JBoss and MayFly's XML orientation. Any suggestions? I'm stumped.Code and console output follows:
Code
package org.america3.testclasses;
import java.util.Properties;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.naming.Context;
import javax.naming.InitialContext;
import org.america3.toolkit.U;
public class Test2 implements MessageListener {
static final Properties JNDI_PROPERTIES = new Properties() {
private static final long serialVersionUID = 1L;
{/*This property key:vlaue pair is specified in Payara41/glassfish/lib/jndi-properties*/
/*The class it calls for is in Payara41/glassfish/lib/glassfish-naming.jar*/
this.put ("java.naming.factory.initial","com.sun.enterprise.naming.impl.SerialInitContextFactory");}
};
//constructor
public Test2 () {
String iAmM = U.getIAmMShort(Thread.currentThread().getStackTrace());
System.out.println(iAmM + "beg");
try {
Context jndiContext = (Context) new InitialContext(JNDI_PROPERTIES);
} catch (Exception e) {
System.out.println(" " + iAmM + "InitialContext failed to instantiate");
System.out.println(" " + iAmM + "Exception : " + e.getClass().getName());
System.out.println(" " + iAmM + "e.getMessage(): " + e.getMessage());
System.out.println(" " + iAmM + "e.getMessage(): " + e.getCause());
e.printStackTrace();
}
System.out.println(iAmM + "end");
}
public static void main(String[] args) {
Test2 messageCenter = new Test2 ();
}
public void onMessage(Message arg0) {
// TODO Auto-generated method stub
}
}
Console
Test2.<init> () beg
Exception in thread "main" java.lang.NoSuchMethodError: org.glassfish.internal.api.Globals.getDefaultHabitat()Lorg/glassfish/hk2/api/ServiceLocator;
at com.sun.enterprise.naming.impl.SerialInitContextFactory.<init>(SerialInitContextFactory.java:126)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at java.lang.Class.newInstance(Unknown Source)
at javax.naming.spi.NamingManager.getInitialContext(Unknown Source)
at javax.naming.InitialContext.getDefaultInitCtx(Unknown Source)
at javax.naming.InitialContext.init(Unknown Source)
at javax.naming.InitialContext.<init>(Unknown Source)
at org.america3.testclasses.Test2.<init>(Test2.java:24)
at org.america3.testclasses.Test2.main(Test2.java:36)
PS: Could someone with enough points add a "Paraya" tag below. I mean with Glassfish's console throwing exceptions when used to configure any JNDI or JMS Resource I think many people will switch.

JAR internal-api-3.1.2.jar is for Glassfish v3, and its Globals class has a method getDefaultHabitat() that returns Habitat:
public static Habitat getDefaultHabitat() {
return defaultHabitat;
}
However, Glassfish v4 has changed method signatures, and you have to use new Glassfish v4 internal API whose Globals class has appropriate method getDefaultHabitat() that returns ServiceLocator:
public static ServiceLocator getDefaultHabitat() {
return defaultHabitat;
}
In other words, replace internal-api-3.1.2.jar with internal-api-4.1.jar which can be found on Maven Central here

You should add ${PAYARA-HOME}/glassfish/lib/gf-client.jar to your classpath as this references all the other required jars in it's META-INF/MANIFEST.MF. Please note, it uses relative path references so you really need to install Payara on the client machine.

RMI UnmarshalException ClassNotFoundException server only

I have followed several tutorials on running an RMI application. However, I can't seem to make it work, as I keep getting stuck on the same exception.
I am, at this point only running a server, so no client communication is involved.
I have a simple RMI program that consists of:
A server class SortServer
An interface ISortFactory<T>
An implementation QuickSortFactory<T>
An RMIUtils class
A policy file allpermissions.policy
Policy file contents
grant {
permission java.security.AllPermission;
};
RMIUtils
static {
// Set policy
setPolicy();
// Set Security manager if not present
if(System.getSecurityManager() == null) {
System.setSecurityManager(new SecurityManager());
}
setHost("127.0.0.1");
}
public static void addCodeBaseFor(Class<?> clazz) {
System.setProperty("java.rmi.server.codebase", clazz.getProtectionDomain().getCodeSource().getLocation().toString());
}
public static void setPolicy() {
System.setProperty("java.security.policy", PolicyFileLocator.getLocationOfPolicyFile());
}
public static void setHost(String hostAddress) {
System.setProperty("java.rmi.server.hostname", hostAddress);
}
public static String getHost() {
return System.getProperty("java.rmi.server.hostname");
}
SortServer
public static void main(String[] args) throws RemoteException, MalformedURLException, AlreadyBoundException {
RMIUtils.addCodeBaseFor(ISortFactory.class);
ISortFactory<String> strQSFactory = new QuickSortFactory<String>();
// Same error: Naming.bind("rmi://"+RMIUtils.getHost()+"/quicksortfactory", strQSFactory);
Registry registry = LocateRegistry.getRegistry();
registry.rebind("quicksortfactory-string", strQSFactory);
}
ISortFactory
public interface ISortFactory<T> extends Remote {
public ISorter<T> createSorter() throws RemoteException;
}
Implementing QuickSortFactory
public class QuickSortFactory<T> extends UnicastRemoteObject implements ISortFactory<T> {
private static final long serialVersionUID = -4856366323843718656L;
public QuickSortFactory() throws RemoteException {
super();
}
#Override
public ISorter<T> createSorter() throws RemoteException {
return new QuickSort<T>();
}
}
ISorter, QuickSorter and referenced objects
ISorter extends Remote and its methods throw RemoteExceptions.
QuickSort extends SortLogic and implements ISorter. Its methods throw RemoteExceptions.
SortLogic extends UnicastRemoteObject. Its methods throw RemoteExceptions.
Since I use JDK 1.5+, I shouldn't need to worry about stubs.
The rmiregistry is running fine, or I would have different errors.
Literal console output
2013-11-20 00:57:00 DEBUG RMIUtils:33 - Policy file path changed to 'C:\Users\Mark\AppData\Local\Temp\rmi-sorter5248481413010560777.policy'
2013-11-20 00:57:00 DEBUG RMIUtils:38 - RMI hostname set to 127.0.0.1
2013-11-20 00:57:00 DEBUG RMIUtils:27 - Codebase path added: file:/F:/Development/Git/Personal/parallel-sorter/bin/
Exception in thread "main" java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: nl.marktielemans.rmisorter.server.factory.ISortFactory
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:400)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:248)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:359)
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
at nl.marktielemans.rmisorter.server.SortServer.main(SortServer.java:42)
Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: nl.marktielemans.rmisorter.server.factory.ISortFactory
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:390)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:248)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.ClassNotFoundException: nl.marktielemans.rmisorter.server.factory.ISortFactory
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:249)
at sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:709)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:653)
at sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:590)
at java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:628)
at java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:294)
at sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:242)
at java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1535)
at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1491)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1748)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1327)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:349)
... 12 more
Without codebase parameter
I've tried without codebase parameter, but am not sure how to include the classes in the RMI classpath as I read I should.
I've tried starting the registry from the code in SortServer using RegistryLocator.getRegistry() as above, as well as starting it from a command line opened in my bin directory. Still, I would get the same error.

java.lang.ClassNotFoundException: nl.marktielemans.rmisorter.server.factory.ISortFactory
...
at sun.rmi.registry.RegistryImpl_Stub.rebind(Unknown Source)
The Registry doesn't have that class available in its CLASSPATH.
If you're using the java.rmi.server.codebase property you need to set it before exporting any remote objects, and the codebase needs to be something the Registry and the clients can use.
public static void addCodeBaseFor(Class<?> clazz) {
System.setProperty("java.rmi.server.codebase", clazz.getProtectionDomain().getCodeSource().getLocation().toString());
}
This isn't going to work. The location on the server of the containing JAR file can't be seen from the client. Generally it is an http: or ftp: URL.

Two RMI registries on the same PC, NotBoundException

Scenario:
I'm implementing an RMI example between 2 PCs where the Controller PC queries the Agent PC for information. The agent PC may run Xen or KVM , hence the implementations of the queries differ(Reason for using RMI).
On the Agent's side I'm running 2 RMI registries bound to two different ports. When the same example is carried out with just 1 Registry on the agent's side, everything works fine.
Here is my code:
Controller. java(contains main() on controller's side):
public class Controller {
NetworkDiscovery n;
public static int discoveryInterval=2000;
static public PM pmlist;
public static void main(String[] args) throws UnknownHostException,NotBoundException, ` MalformedURLException, RemoteException {
pmOperations pm=(pmOperations)Naming.lookup("rmi://Agent_IP/RMIService1");
boolean l= pm.CreateVM("apple3","/var/lib/libvirt/images",1,200);
System.out.println(l);
vmOperations vm=(vmOperations)Naming.lookup("rmi://Agent_IP/RMIService2");
boolean ShutdownVM = vm.ShutdownVM("apple1");
System.out.println(ShutdownVM);
//other code
}
pmOperations.java(on controller's side)(on the agent's side, it has the same defn with implementation code inside function)
public interface pmOperations extends java.rmi.Remote{
public boolean CreateVM(String vmName,String imgSrc, int allotCPU, int allotMem )
throws java.rmi.RemoteException;
}
vmOperations.java(on controller's side)(on the agent's side, it has the same defn with implementation code inside function)
public interface vmOperations extends java.rmi.Remote{
boolean ChangeVMParam(String vmName,String paramName,String paramValue)
throws java.rmi.RemoteException;
}
Agent.java
public class Agent {
Agent() throws RemoteException, MalformedURLException{
Registry RMIService1 = LocateRegistry.createRegistry(1099);
Registry RMIService2 = LocateRegistry.createRegistry(4478);
vmOperations vmOp = new kvmVM();
pmOperations pmOp = new kvmPM();
Naming.rebind("rmi://localhost:1099/RMIService1", pmOp);
Naming.rebind("rmi://localhost:4478/RMIService2", vmOp);
}
public static void main(String[] args) throws SocketException, UnknownHostException, IOException, LibvirtException {
System.out.println("Inside main ");
new Agent();
//other code
}
}
Error I get while running above code on controller's side-no error on agent side:
Exception in thread "main" java.rmi.NotBoundException: RMIService2
at sun.rmi.registry.RegistryImpl.lookup(RegistryImpl.java:106)
at sun.rmi.registry.RegistryImpl_Skel.dispatch(Unknown Source)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:386)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:662)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:255)
at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:233)
at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:359)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at java.rmi.Naming.lookup(Naming.java:84)
at package1.Controller.main(Controller.java:43)
Thanks!

You can't create two Registries in the same JVM.
You don't need two Registries in the same host.
You don't need to create two instances of the remote object.
Just create one Registry, one remote object, and bind it to the Registry twice, once with each name. You don't really need to bind it twice either really either. There's a lot of pointless duplication in this design.

Java RMI ServerException - java.lang.ClassNotFoundException: org.prog.rmi.RmiServer_Stub

I have inherited some Java RMI client/server code, and while it runs fine on one machine, I haven't been able to get it to run in my dev environment.
The problem is when I run the server using the following java.exe -Djava.security.policy=conf\server.policy -SRC;. -Djava.library.path=. org.prog.rmi.RmiServer
I get the following error:
java.rmi.ServerException: RemoteException occurred in server thread; nested exception is:
java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
java.lang.ClassNotFoundException: org.prog.rmi.RmiServer_Stub (no security manager: RMI class loader disabled)
at sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:396)
at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:250)
at sun.rmi.transport.Transport$1.run(Transport.java:159)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Transport.java:155)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)
...
My server.policy file is
grant {
permission java.security.AllPermission;
};
And my java code:
package org.prog.rmi;
import java.rmi.Naming;
import java.rmi.RemoteException;
import java.rmi.RMISecurityManager;
import java.rmi.server.UnicastRemoteObject;
import java.rmi.registry.*;
public class RmiServer extends UnicastRemoteObject
implements RmiServerIntf {
private BatchApi bapi;
private String iniFileLocation;
private String layoutOption;
private int addressCount = 0;
private RefInt apiHandle = new RefInt();
public RmiServer(String iniFileLocation,String layoutOption) throws RemoteException
{ super();
this.iniFileLocation = iniFileLocation;
this.layoutOption = layoutOption;
initAPI();
startupAPI();
openAPI();
}
public static void main(String args[])
{
System.out.println("RMI server started");
// Create and install a security manager
if (System.getSecurityManager() == null)
{
System.setSecurityManager(new RMISecurityManager());
System.out.println("Security manager installed.");
}
else
System.out.println("Security manager already exists.");
try //special exception handler for registry creation
{
LocateRegistry.createRegistry(1099);
System.out.println("java RMI registry created.");
}
catch (RemoteException e)
{
//do nothing, error means registry already exists
System.out.println("java RMI registry already exists.");
}
try
{
//Instantiate RmiServer
for (String arg: args){
System.out.println(arg);
}
RmiServer obj = new RmiServer(args[0],args[1]);
// Bind this object instance to the name "RmiServer"
Naming.rebind("//127.0.0.1/RmiServer", obj);
System.out.println("PeerServer bound in registry");
}
catch (Exception e)
{
System.err.println("RMI server exception:");
e.printStackTrace();
}
}
}
I've seen solutions relating to the java.rmi.server.codebase but didn't have any luck setting this either

You haven't regenerated the stub with rmic, or the Registry doesn't have access to it via its classpath.

After some further investigation and following RMI tutorials it appeared that there was a problem with the RMI registration server on port 1099.
When I stared the RMI registration server on another port (e.g. 2005) and changed these lines of code
LocateRegistry.createRegistry(2005);
and
Naming.rebind("//127.0.0.1:2055/RmiServer", obj);
This ran sucessfully without errors and my client was able to connect.
I hope this answer helps others with this error. Let me know if anyone needs any more detailed information.