Hi, I use Properties and get an Error when calling setProperty(Sring, String) or put in the following stateless Bean method. The bean itself is deployed and up and running in JBoss 4.0.3 CR2 EJB3.0. | private Session getSession(String smtpServer){ | if (session == null){ | //Properties props = new Properties(); | Properties props = System.getProperties(); | System.out.println(">>>>>> Properties = " + props); | props.setProperty("mail.smtp.host", smtpServer); | When calling SetProperty I get the following exception. Anyway if I use new Properties() using System.out.println() I will get printed probs={} in the console or when using System.getProperties() probs={JBOS...Path:.....} so it seems the property Objects are fine. When I call the class as Pojo everything wors fine! Exception: | Exception in thread "main" javax.ejb.EJBException: java.lang.NullPointerException | at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx(Ejb3TxPolicy.java:69) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:83) | at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:192) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:81) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:308) | at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:104) | at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) | at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358) | at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412) | at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) | at org.jboss.remoting.RemoteClientInvoker.invoke(RemoteClientInvoker.java:190) | at org.jboss.remoting.Client.invoke(Client.java:525) | at org.jboss.remoting.Client.invoke(Client.java:488) | at org.jboss.aspects.remoting.InvokeRemoteInterceptor.invoke(InvokeRemoteInterceptor.java:55) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.tx.ClientTxPropagationInterceptor.invoke(ClientTxPropagationInterceptor.java:61) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.security.SecurityClientInterceptor.invoke(SecurityClientInterceptor.java:55) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.remoting.IsLocalInterceptor.invoke(IsLocalInterceptor.java:65) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.stateful.StatefulRemoteProxy.invoke(StatefulRemoteProxy.java:133) | at $Proxy1.sendTextMail(Unknown Source) | at com.teec.ios.core.client.MailClient.sendTextMail(MailClient.java:44) | at com.teec.ios.core.client.MailClient.main(MailClient.java:88) | Caused by: java.lang.NullPointerException | at java.util.Hashtable.put(Unknown Source) | at org.jboss.util.property.PropertyMap.put(PropertyMap.java:182) | at org.jboss.util.property.PropertyMap.setProperty(PropertyMap.java:615) | at com.teec.ios.core.ejb.session.MailManagerBean.getSession(MailManagerBean.java:210) | at com.teec.ios.core.ejb.session.MailManagerBean.sendTextMail(MailManagerBean.java:99) | at com.teec.ios.core.ejb.session.MailManagerBean.sendTextMail(MailManagerBean.java:82) | at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) | at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) | at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) | at java.lang.reflect.Method.invoke(Unknown Source) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:109) | at org.jboss.ejb3.entity.ExtendedPersistenceContextPropagationInterceptor.invoke(ExtendedPersistenceContextPropagationInterceptor.java:57) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.entity.TransactionScopedEntityManagerInterceptor.invoke(TransactionScopedEntityManagerInterceptor.java:54) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.AllowedOperationsInterceptor.invoke(AllowedOperationsInterceptor.java:47) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.tx.TxPolicy.invokeInOurTx(TxPolicy.java:79) | at org.jboss.aspects.tx.TxInterceptor$Required.invoke(TxInterceptor.java:192) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.tx.TxPropagationInterceptor.invoke(TxPropagationInterceptor.java:76) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.stateful.StatefulInstanceInterceptor.invoke(StatefulInstanceInterceptor.java:81) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:78) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.ENCPropagationInterceptor.invoke(ENCPropagationInterceptor.java:47) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke(AsynchronousInterceptor.java:106) | at org.jboss.aop.joinpoint.MethodInvocation.invokeNext(MethodInvocation.java:98) | at org.jboss.ejb3.stateful.StatefulContainer.dynamicInvoke(StatefulContainer.java:308) | at org.jboss.aop.Dispatcher.invoke(Dispatcher.java:104) | at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:828) | at org.jboss.remoting.ServerInvoker.invoke(ServerInvoker.java:681) | at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358) | at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412) | at org.jboss.remoting.transport.socket.ServerThread.run(ServerThread.java:239) | Thanks for your help! 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