Need help WHY IS JAVA TECH SO IMP
Hi guys im new to the java stuff so i need to ask one question that is
"Why is java technology so important what are its plus points and why (if we should)to preffer it over the .net technology"
thanx
So is the platform independency of JAVA or JAVA being
a prog lang. and .NET being a technoloy, the only
major diff b/w the two. Doesn't JAVA has any other
advantage over .NET if so the what happens if .NET
gets platform independency too. It will sweep through
JAVA coz its considerably faster.I don't know what you're talking about.
"considerably faster"? Why do you say that? .NET has a Common Runtime, just like the JVM. It's byte code that's interpreted. Why will .NET be faster?
Faster on distributed problems? What magic will it work on network latency?
Do databases connected to .NET suddenly run faster?
Honestly, how do you live with such a shallow understanding?
Java is one language that runs on many platforms. .NET has many languages (VB, C++, C#) that run on one platform.
J2EE is a framework for enterprise applications. It's not going away anytime soon. Even if it does, the ideas will linger long after the language has been replaced.
Wake up, Sleep_Walker. Your paper is due soon. - MOD
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Need help in solving java.io.NotSerializableException
Hi,
Weblogic 9.2
I need help in solving the java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
I dont know why ApplicationNamingNode has to be serialized.
Full stack trace will be provided if needed.
thank youHere is the stack trace
Remote service [com.gfs.corp.component.price.customerbid.PCBMaint] threw exception
weblogic.rjvm.PeerGoneException: ; nested exception is:
java.rmi.UnmarshalException: Incoming message header or abbreviation processing failed ; nested exception is:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:211)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:338)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:252)
at com.gfs.corp.component.price.maint.customerbid.ejb.PCBMaint_q9igfc_EOImpl_922_WLStub.createBid(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.springframework.remoting.rmi.RmiClientInterceptorUtils.doInvoke(RmiClientInterceptorUtils.java:107)
at org.springframework.ejb.access.SimpleRemoteSlsbInvokerInterceptor.doInvoke(SimpleRemoteSlsbInvokerInterceptor.java:75)
at org.springframework.ejb.access.AbstractRemoteSlsbInvokerInterceptor.invoke(AbstractRemoteSlsbInvokerInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy47.createBid(Unknown Source)
at com.gfs.corp.bid.price.controller.DefaultBidPriceUpdater.awardBid(DefaultBidPriceUpdater.java:83)
at com.gfs.corp.bid.price.ejb.AwardQueueMessageHandler.onMessage(AwardQueueMessageHandler.java:98)
at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:429)
at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:335)
at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:291)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4072)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:3962)
at weblogic.jms.client.JMSSession$UseForRunnable.run(JMSSession.java:4490)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: java.rmi.UnmarshalException: Incoming message header or abbreviation processing failed ; nested exception is:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at weblogic.rjvm.MsgAbbrevJVMConnection.dispatch(MsgAbbrevJVMConnection.java:441)
at weblogic.rjvm.t3.MuxableSocketT3.dispatch(MuxableSocketT3.java:368)
at weblogic.socket.AbstractMuxableSocket.dispatch(AbstractMuxableSocket.java:378)
at weblogic.socket.NTSocketMuxer.processSockets(NTSocketMuxer.java:105)
at weblogic.socket.SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:145)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:117)
Caused by: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1309)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.transaction.internal.PropagationContext.readRollbackReason(PropagationContext.java:804)
at weblogic.transaction.internal.PropagationContext.readExternal(PropagationContext.java:376)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.rmi.provider.BasicServiceContext.readExternal(BasicServiceContext.java:56)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:195)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:565)
at weblogic.rjvm.MsgAbbrevInputStream.readExtendedContexts(MsgAbbrevInputStream.java:224)
at weblogic.rjvm.MsgAbbrevInputStream.init(MsgAbbrevInputStream.java:188)
at weblogic.rjvm.MsgAbbrevJVMConnection.dispatch(MsgAbbrevJVMConnection.java:435)
... 7 more
Caused by: java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.jndi.internal.WLContextImpl.writeExternal(WLContextImpl.java:453)
at weblogic.jndi.internal.WLEventContextImpl.writeExternal(WLEventContextImpl.java:422)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.transaction.internal.PropagationContext.convertRollbackReasonToBytes(PropagationContext.java:735)
at weblogic.transaction.internal.PropagationContext.writeRollbackReason(PropagationContext.java:819)
at weblogic.transaction.internal.PropagationContext.writeExternal(PropagationContext.java:183)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.rmi.provider.BasicServiceContext.writeExternal(BasicServiceContext.java:48)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.rjvm.MsgAbbrevOutputStream.writeObject(MsgAbbrevOutputStream.java:614)
at weblogic.rjvm.MsgAbbrevOutputStream.marshalCustomCallData(MsgAbbrevOutputStream.java:319)
at weblogic.rjvm.MsgAbbrevOutputStream.transferThreadLocalContext(MsgAbbrevOutputStream.java:149)
at weblogic.rmi.internal.BasicServerRef.postInvoke(BasicServerRef.java:606)
at weblogic.rmi.internal.BasicServerRef.handleRequest(BasicServerRef.java:455)
at weblogic.rmi.internal.BasicServerRef.access$300(BasicServerRef.java:58)
at weblogic.rmi.internal.BasicServerRef$BasicExecuteRequest.run(BasicServerRef.java:975)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
2007-10-18 08:38:04,931 [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] WARN org.springframework.ejb.access.SimpleRemoteStatelessSessionProxyFactoryBean - Could not invoke 'remove' on remote EJB proxy
weblogic.rjvm.PeerGoneException: ; nested exception is:
java.rmi.UnmarshalException: Incoming message header or abbreviation processing failed ; nested exception is:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:211)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:338)
at weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:252)
at com.gfs.corp.component.price.maint.customerbid.ejb.PCBMaint_q9igfc_EOImpl_922_WLStub.remove(Unknown Source)
at org.springframework.ejb.access.AbstractRemoteSlsbInvokerInterceptor.removeSessionBeanInstance(AbstractRemoteSlsbInvokerInterceptor.java:227)
at org.springframework.ejb.access.SimpleRemoteSlsbInvokerInterceptor.releaseSessionBeanInstance(SimpleRemoteSlsbInvokerInterceptor.java:118)
at org.springframework.ejb.access.SimpleRemoteSlsbInvokerInterceptor.doInvoke(SimpleRemoteSlsbInvokerInterceptor.java:95)
at org.springframework.ejb.access.AbstractRemoteSlsbInvokerInterceptor.invoke(AbstractRemoteSlsbInvokerInterceptor.java:119)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at $Proxy47.createBid(Unknown Source)
at com.gfs.corp.bid.price.controller.DefaultBidPriceUpdater.awardBid(DefaultBidPriceUpdater.java:83)
at com.gfs.corp.bid.price.ejb.AwardQueueMessageHandler.onMessage(AwardQueueMessageHandler.java:98)
at weblogic.ejb.container.internal.MDListener.execute(MDListener.java:429)
at weblogic.ejb.container.internal.MDListener.transactionalOnMessage(MDListener.java:335)
at weblogic.ejb.container.internal.MDListener.onMessage(MDListener.java:291)
at weblogic.jms.client.JMSSession.onMessage(JMSSession.java:4072)
at weblogic.jms.client.JMSSession.execute(JMSSession.java:3962)
at weblogic.jms.client.JMSSession$UseForRunnable.run(JMSSession.java:4490)
at weblogic.work.ServerWorkManagerImpl$WorkAdapterImpl.run(ServerWorkManagerImpl.java:518)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
Caused by: java.rmi.UnmarshalException: Incoming message header or abbreviation processing failed ; nested exception is:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at weblogic.rjvm.MsgAbbrevJVMConnection.dispatch(MsgAbbrevJVMConnection.java:441)
at weblogic.rjvm.t3.MuxableSocketT3.dispatch(MuxableSocketT3.java:368)
at weblogic.socket.AbstractMuxableSocket.dispatch(AbstractMuxableSocket.java:378)
at weblogic.socket.NTSocketMuxer.processSockets(NTSocketMuxer.java:105)
at weblogic.socket.SocketReaderRequest.run(SocketReaderRequest.java:29)
at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:42)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:145)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:117)
Caused by: java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1309)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.transaction.internal.PropagationContext.readRollbackReason(PropagationContext.java:804)
at weblogic.transaction.internal.PropagationContext.readExternal(PropagationContext.java:376)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.rmi.provider.BasicServiceContext.readExternal(BasicServiceContext.java:56)
at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1717)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1305)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:348)
at weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:195)
at weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:565)
at weblogic.rjvm.MsgAbbrevInputStream.readExtendedContexts(MsgAbbrevInputStream.java:224)
at weblogic.rjvm.MsgAbbrevInputStream.init(MsgAbbrevInputStream.java:188)
at weblogic.rjvm.MsgAbbrevJVMConnection.dispatch(MsgAbbrevJVMConnection.java:435)
... 7 more
Caused by: java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.jndi.internal.WLContextImpl.writeExternal(WLContextImpl.java:453)
at weblogic.jndi.internal.WLEventContextImpl.writeExternal(WLEventContextImpl.java:422)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1375)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1347)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1290)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.transaction.internal.PropagationContext.convertRollbackReasonToBytes(PropagationContext.java:735)
at weblogic.transaction.internal.PropagationContext.writeRollbackReason(PropagationContext.java:819)
at weblogic.transaction.internal.PropagationContext.writeExternal(PropagationContext.java:183)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.rmi.provider.BasicServiceContext.writeExternal(BasicServiceContext.java:48)
at java.io.ObjectOutputStream.writeExternalData(ObjectOutputStream.java:1310)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1288)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1079)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:302)
at weblogic.rjvm.MsgAbbrevOutputStream.writeObject(MsgAbbrevOutputStream.java:614)
at weblogic.rjvm.MsgAbbrevOutputStream.marshalCustomCallData(MsgAbbrevOutputStream.java:319)
at weblogic.rjvm.MsgAbbrevOutputStream.transferThreadLocalContext(MsgAbbrevOutputStream.java:149)
at weblogic.rmi.internal.ReplyOnError.run(ReplyOnError.java:54)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:181)
2007-10-18 08:38:05,244 [[ACTIVE] ExecuteThread: '0' for queue: 'weblogic.kernel.Default (self-tuning)'] DEBUG org.springframework.ejb.access.SimpleRemoteStatelessSessionProxyFactoryBean - Could not connect to remote EJB [com.gfs.corp.component.price.customerbid.PCBMaint] - retrying
org.springframework.remoting.RemoteConnectFailureException: Could not connect to remote service [com.gfs.corp.component.price.customerbid.PCBMaint]; nested exception is weblogic.rjvm.PeerGoneException: ; nested exception is:
java.rmi.UnmarshalException: Incoming message header or abbreviation processing failed ; nested exception is:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: weblogic.jndi.internal.ApplicationNamingNode
thank you -
Need help to handle java FX stuffs...........??
i am very much new to Java FX i want to do a login acceptance and rejection operation.like ::
client will click on the button it will open up the window of created by java FX which will give the login screen*(in this case i would like to mention one thing i all ready have a page like usercheck.jsp which is checking if the user is already loged in or not so need to call this JAVA FX window from that page.)*.This java FX window should have a text field and a password field to match with database.it will show a progressber while it is matching the user name password with database.If the login is correct it will give the user the session stuff and allow him to access**(ie.it will be forworded to the page say,cart.jsp)** otherwise it will give a alert message "login faild".any idea about it..............what should i do now???my database is in access and it connected to my program by DA.java.please guide me what should i do,step by step?and consulting with [http://jfx.wikia.com/wiki/SwingComponents]
now guide me.............
i have just created a swing button say "click me to login" on a UNDECORATED window............so what next.........
Edited by: coolsayan.2009 on May 7, 2009 3:35 PMmy DA.java is like::
package shop;
import java.sql.*;
public class DAClass {
private static Connection conn;
private static ResultSet rs;
private static PreparedStatement ps;
public static void connect(String dsn, String un, String pwd) {
try {
//access
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
conn=DriverManager.getConnection("jdbc:odbc:"+dsn,un,pwd);
catch(Exception e) {
public static boolean chkPwd(String un, String pwd) {
try {
boolean b=false;
ps=conn.prepareStatement("select * from cust_info where cust_name=? and cust_pwd=?");
ps.setString(1,un);
ps.setString(2,pwd);
rs=ps.executeQuery();
while(rs.next()) {
b=true;
return b;
catch(Exception e) {
return false;
public static ResultSet getCat(){
try {
ps=conn.prepareStatement("select * from item_category where cat_parent=0 order by cat_name");
rs=ps.executeQuery();
return rs;
catch(Exception e) {
return null;
public static ResultSet getSubCat(int cat_id){
try {
ps=conn.prepareStatement("select * from item_category where cat_parent=? order by cat_name");
ps.setInt(1,cat_id);
rs=ps.executeQuery();
return rs;
catch(Exception e) {
return null;
public static ResultSet getItems(int cat_id){
try {
ps=conn.prepareStatement("select * from item_info where cat_id=? order by title");
ps.setInt(1,cat_id);
rs=ps.executeQuery();
return rs;
catch(Exception e) {
return null;
public static boolean insertOd(int order_id,String cust_id, String dt, String st, double amt,String pro)
try{
ps=conn.prepareStatement("insert into cust_order values (?,?,?,?,?,?)");
ps.setInt(1,order_id);
ps.setString(2,cust_id);
ps.setString(3,dt);
ps.setString(4,st);
ps.setDouble(5,amt);
ps.setString(6,pro);
ps.executeUpdate();
return true;
catch(Exception e)
return false;
public static boolean draft_det(int order_id,String bank_name,String draft_no,String draft_date,String branch,double amount)
try{
ps=conn.prepareStatement("insert into draft_det values (?,?,?,?,?,?)");
ps.setInt(1,order_id);
ps.setString(2,bank_name);
ps.setString(3,draft_no);
ps.setString(4,draft_date);
ps.setString(5,branch);
ps.setDouble(6,amount);
ps.executeUpdate();
return true;
catch(Exception e)
return false;
public static int getOrderId()
try{
int id=0;
ps=conn.prepareStatement("select Max(order_id) from cust_order");
rs=ps.executeQuery();
while(rs.next()){
id= rs.getInt(1);
return id;
catch(Exception e)
return 0;
public static boolean credit_det(int order_id,String credit_no,String credit_type,String pin_no)
try{
ps=conn.prepareStatement("insert into credit_det values (?,?,?,?)");
ps.setInt(1,order_id);
ps.setString(2,credit_no);
ps.setString(3,credit_type);
ps.setString(4,pin_no);
ps.executeUpdate();
return true;
catch(Exception e)
return false;
public static boolean detailOrder(int order_id,int item_id,int item_number,double item_price)
try{
ps=conn.prepareStatement("insert into order_det values (?,?,?,?)");
ps.setInt(1,order_id);
ps.setInt(2,item_id);
ps.setInt(3,item_number);
ps.setDouble(4,item_price);
ps.executeUpdate();
return true;
catch(Exception e)
return false;
public static UserInfo getUserDet(String un) {
try {
ps=conn.prepareStatement("select * from cust_info where cust_name=?");
ps.setString(1,un);
rs=ps.executeQuery();
UserInfo user=null;
while(rs.next()) {
String uname=rs.getString(1);
String pass=rs.getString(2);
String fname=rs.getString(3);
String lname=rs.getString(4);
String addr=rs.getString(5);
String city=rs.getString(6);
String state=rs.getString(7);
String country=rs.getString(8);
String contact=rs.getString(9);
String question=rs.getString(10);
String answer=rs.getString(11);
String email=rs.getString(12);
String mobile=rs.getString(13);
user=new UserInfo(0,fname,lname,addr,city,state,country,contact,question,answer,email,mobile,uname,pass);
return user;
catch(Exception e) {
return null;
public static boolean userInsert(String fname,String lname,String addr,String city,String state,String country,String contact,String question,String answer,String email,String mobile,String uname,String pass ){
try{
ps=conn.prepareStatement("insert into cust_info values (?,?,?,?,?,?,?,?,?,?,?,?,?)");
ps.setString(1,uname);
ps.setString(2,pass);
ps.setString(3,fname);
ps.setString(4,lname);
ps.setString(5,addr);
ps.setString(6,city);
ps.setString(7,state);
ps.setString(8,country);
ps.setString(9,contact);
ps.setString(10,question);
ps.setString(11,answer);
ps.setString(12,email);
ps.setString(13,mobile);
ps.executeUpdate();
return true;
catch(Exception e)
return false;
public static boolean chackuname(String un) {
try {
boolean b=false;
ps=conn.prepareStatement("select * from cust_info where cust_name=?");
ps.setString(1,un);
rs=ps.executeQuery();
while(rs.next()) {
b=true;
return b;
catch(Exception e) {
return false;
public static boolean adminChk(String un,String pass){
try{
boolean b=false;
ps=conn.prepareStatement("select * from admin where username=? and password=?");
ps.setString(1,un);
ps.setString(2,pass);
rs=ps.executeQuery();
while(rs.next())
b=true;
return b;
catch(Exception e){
return false;
public static String getStatus(int cust_id)
try{
String status=null;
ps=conn.prepareStatement("select order_status from cust_order where cust_id=?");
ps.setInt(1,cust_id);
rs=ps.executeQuery();
while(rs.next()){
status= rs.getString(1);
return status;
catch(Exception e)
return null;
public static boolean chkCatagory(String cat)
boolean b=false;
try{
ps=conn.prepareStatement("select * from item_category where cat_name=? ");
ps.setString(1,cat);
rs=ps.executeQuery();
while(rs.next())
b=true;
return b;
catch(Exception e)
return false;
public static int getMaxCatId(){
try{
int id=0;
ps=conn.prepareStatement("select MAX(cat_id) from item_category");
rs=ps.executeQuery();
while(rs.next())
id=rs.getInt(1);
return id;
catch(Exception e)
return -1;
public static boolean catInsert(int catId, String cat, int par)
boolean flag=false;
try{
ps=conn.prepareStatement("insert into item_category values(?,?,?)");
ps.setInt(1,catId);
ps.setString(2,cat);
ps.setInt(3,par);
ps.executeUpdate();
flag=true;
return flag;
catch(Exception e)
return false; -
Need help for downloading java at mac book retina
i want to download java at my mac book pro retina but everytime we downloaded its not working..i need this because im going to use it to open my bank account...everytime i gonna check my bank account i need to use another computer not this my mac.why?? can you help me please.
Banks do NOT use Java-in-a-Browser for anything, at all. If you have received a suggestion to conduct banking with JAVA enabled in your Browser, someone is attempting to commit a crime, with you as the intended victim. You are being scammed and should report it to the Police.
-
I'm just learning java and my teacer likes giving us tests on stuff he never taught us... I'm not asking for you to give me ther answers but just at least explain what this stuff means
he gave us a program then 16 questions about it
All I know is that the prgram is a class that takes students names and test scores and finds there averges and studd like that
ok heres the program
// Solution 5.1
/* Student.java
Manage a student's name and three test scores.
public class Student {
//Instance variables
//Each student object has a name and three test scores
private String name; //Student name
private int test1; //Score on test 1
private int test2; //Score on test 2
private int test3; //Score on test 3
// Default constructor -- initialize name to the empty string and
// the test scores to zero
public Student() {
name = "";
test1 = 0;
test2 = 0;
test3 = 0;
//Aditional constructor -- initialize the name and test scores
//to the values provided
public Student(String nm, int t1, int t2, int t3){
name = nm;
test1 = t1;
test2 = t2;
test3 = t3;
//Aditional constructor -- initialize the name and test scores
//to match those in perameter s.
public Student(Student s){
name = s.name;
test1 = s.test1;
test2 = s.test2;
test3 = s.test3;
//Other Methods
public void setName (String nm){
//Set a students name
name = nm;
public String getName(){
//Get a students name
return name;
public void setScore (int i, int score){
//Set test i to score
if (i == 1) test1 = score;
else if (i == 2) test2 = score;
else test3 = score;
public int getScore (int i){
//retrieve score i
if (i == 1) return test1;
else if (i == 2) return test2;
else return tes3;
public int getAverage(){
//compute and return the average
int average;
average = (int) Math.round((test1 + test2 + test3) / 3.0);
return average
public int getHighscore(){
//determine and return the highest score
int highScore;
highscore = test1;
if (test2 > highscore) highscore = test 2;
if (test3 > highscore) highscore = test 3;
return highscore;
public String toString(){
//Construct and return a string representation of the student
string str;
str = "Name: " + name + "\n" + // "\n" denotes a newline
"Test 1: " + test1 + "\n" +
"Test 2: " + test2 + "\n" +
"Test 3: " + test3 + "\n" +
"Average: " + getAverage();
return string;
Ok so theres the prgram the Questions are:
1. Identify the four structural elements of the student class prgram
2. Why did I omit the clause extends <some class> in my program
3. Explain Class hierarchy
4. Why are instance variables always declared to be private
5. What would happen if I declared them public
6. What happens if I omit it completely
7. Identify the instance variables in student class program
8. What does the constructor method do in the student class
9. Why didn't I declare and intalize my variables at the same time
10. Why do I use so many comments in this program
(I actually know the answer to this one)
11. Why do I need a default constructor
(what the crap is a constructor?)
12. Why did I provide additional constructors
13. In Additional constructor section, explain the following code:
name = "";
name = nm;
14. Explain Chaining and where did I place it in the student class program
15. List 2 visibility modifiers in this program
16 Rewrite the student class to exclude the "\n" in t the toString section
And that is it. I seriously don't know what any of those questions mean PLEASE HELP!A duplicate of this is here http://forum.java.sun.com/thread.jspa?threadID=5141024
-
Need help, system reboot.- Java
For a few months I've been trying to figure out why my system suddenly reboots when online and accessing a new web page. In fact, when I get the auto message from Microsoft on critical updates and click on it, as soon as that page starts loading my system reboots. My thought initially was something Java was causing it because some web pages were fine but others.... kaput! Since I had recently upgraded from Norton AntiVirus to System Works and to AOL 7.0 I initially suspected them. I uninstalled System Works and reinstalled NAV with no difference. I have searched help pages on Microsoft and tech sites to no avail. Two days ago I was searching in Control Panel (Win98B) and saw a Java icon that looked unfamiliar. Ah ha! Now I do download utilities (I am not a techie but know more than the average bumbler) so thought I must have downloaded something that placed the icon there. I went to Add/REmove programs and found Java 2 (I think) there and uninstalled it.
Well, I am still rebooting. I looked in the registry (I did not touch) and did a search for Java and found several entries.
So, am I on the right track? Can anyone assist me?
(Including how to get back to this thread after wor.. I will try! (this list is huge!)
Thank youThe java icon in your control panel is placed there when you install JRE 1.3 or higher. You were probably prompted by a web page at some point to install the newer version of Java to view the content of the page. This is not a bad thing at all. Java more than likely wouldn't crash your computer. Its most likely a bad video card driver or network/modem card driver depending on how you connect to the internet. But a random reboot in my experience has almost always been due to a video card driver. Try upgrading that. You say AOL suspected Norton System Works? I assume you mean it said it might be a virus? This is very common with antivirus software. This is why a lot of anti virus software will tell you to disable System Works before installing it. You can rest assured that Norton System Works isn't a virus.
-
Need help writing a Java rule in PDF Forms
I have created an invoice for my contractors via "forms", and in turn made each cell either a drop down list or "read only" field so they cannot change the rate of pay, etc. Here is my issue...My first drop down cell is titled "Job Description". When the contractor selects one of the 8 dropdown options within the Job Description field, I would like it to automatically fill in the hourly rate that is associated with that particular job description (or skill). I currently have my "rate" cell as a drop down, and I want to make that a read only, and when you select the A1 position from Job Description, it will populate the "rate" field with the appropriate amount for that A1 rate. I believe this can be done with writing some Java script, but I have never played with Java and I don't really have the time to teach myself. If anyone can help with me a quick tutorial, or even the formula I should use, so that I can just plug and play, that would be super helpful. If this is a time consuming issue, I would be interested in paying someone to do it for me. Thank you!
Hi George,
I was able to copy my data over to a fresh document, and now it works just fine....thank you so much for your insight and help!
I have another question if you have a moment.
I am trying to do a simple calculation of start time and end time for my employees. Do I need to do this via a javascript, and if so, what area in properties of the result field should I copy it to? for the purpose of the script, the fields are as follows:
DataField1 = start time
DataField2 = end time
DataField3 = total time
I would like to use the h:MM tt format for my time fields if possible.
I've attached a link to the file through my dropbox account, and you'll notice that I created three new fields at the top of the invoice just to test the time calculations before i mock up the whole document.
Dropbox - Contractor Invoice Template (1).pdf
Any help you can give me would awesome!
Thank you!! -
Need Help with a JAVA programming assignment
How do I write a JAVA program that could be used as the start of an MS-DOS/Windows simulation of the IEEE 802.3 protocol? I am to only code the parts necessary to build the 802.3 frame. For the initial implementation, the Checksum function need not be a CRC function, and the Destination and Source addresses wil be in input, stored, and output, and in dotted-decimal format.
I need:
1. A record to describe the frame, with each field being a (byte-) string of the required size, except that the Data field is of variable size. Although the "Source address" and "Destination address" would be 6 bytes for a real implementation, for this first implementation you can either assume they'll be text strings in the usual "dotted decimal" form (e.g. "14.04.05.18.01.25" as a typical example--from Tanenbaum, p. 429), or 6 hex digits.
2. Suitable constant declarations for values such as the standard "Preamble" and "Start of Frame" values.
3. Suitable functions to Get the three variable values "Destination address", "Source address", and "Data" from the standard input device.
4. A suitable function to display each of the fields of a given frame in a format such as:
Preamble: ...
StartofFrame: ...
Destination: ...
etc.
5. A suitable function to generate a "Pad" field if necessary.
6. A "dummy" Checksum-generating function which just takes the first 32 bits (4 bytes) of the Data (or Data+Pad, if necessary) rather than an actual CRC algorithm.
I have no experience with Java. Can you help me or start me in the right direction?
Thanks...........TKIf you have no experience with Java, then it seems to me your first step should be to start learning the language. But it's difficult to advise how, since we don't know anything about your background. There are many good books available on Java, some are for beginners and some are for advanced programmers, so I'd suggest you go somewhere that has a large selection and start looking for something that doesn't seem completely over your head.
-
Need Help with a Java programming exercise.
I have to Write a program that reads two times in military format (0900, 1730) and prints the number of hours and minutes between two times. Supply your own test program. Here are two sample runs. User inputs are the numbers.
Please enter the first time: 0900
Please enter the second time: 1730
8 hours 30 minutes
Please enter the first time: 1730
Please enter the second time: 0900
15 hours 30 minutes
Test Program I can write up myself. But the entire constructor I have no idea how to start. This is basic Java Coding. no C++ no importing anything.
So far this is what I got and I'm sure it's wrong:
public class TimeInterval
private double hours;
private double minutes;
public TimeInterval(double Time1, double Time2)
hours =
minutes =
}tad2382 wrote:
Jverd,
I'm guessing that in your early days on this forum you must have spent a lot of time explaining constructors, object creation, etc. Now, after some 40K posts to the forum, you figure newbies should just go and read the documentation. Is that what a lot of veteran posters feel?Perhaps the OP is not aware of the fact the Sun has a good deal of high quality study material published on their website. What's wrong with posting it in a thread? Why should one copy the same thing over and over again? If after reading that tutorial, the OP still has some questions about it, s/he is free to post a follow up question. I am sure that many of the regulars here are more than happy to answer them.
Also note that the OP's problem description is rather vague. A "I don't know where to start" is IMO best answered by a link to a comprehensive tutorial or a beginners book.
Being one of the (relatively) novice posters on the forum, I still feel the need to customize posts,Well, by all means: do so.
trying to see things from the poster's side. Maybe after a few thousand posts, I'll just keep throwing the same documentation at newbies, instead of detailed customized responses, heh.IMO, that's a load of cr@p. -
I want to control a Vrml Model through Java applet or Java 3D,I try some methods,but none of them work well.
I edited my source code in UltraEdit,and compiled it under command line,in my classpath,I had added the vrml97.jar,so I compiled it successful,but when I run it,it cause a exception"NoClassDefException",what should I do?
So I changed my method,I used another "jar" file provided by cosmoplayer,a Vrml Browser,to control my model,as example in the web,I complied it successful,but when I run it through IE,it still cause some exceptions,even when I try the example provided by cosmoplayer itself,it also give me some wrong information just like this:
Loading Script Node class http://foo.co.jp/Example1.class
# Could not load the script class http://foo.co.jp/Example1.class.
# Please make sure the class is declared PUBLIC or the class file exists.
but this class file is on that path properly! I was puzzled
with this for a long time.by the way,all the document in the web only write the source file like this:
import vrml.*;but I can't found this package,so I renamed the nocosmop21.jar into vrml.jar.and put it in the classpath,but I think this is not the correct way,it must cause a lot of trouble.So if I want use the jar provided with cosmoplayer,what should I do?Did you install Vrml97.jar in your JRE's ext folder (so it will be used in running your applet) as well as you SDK's folder (so that it can be used in the compile)?
Check out the link shown below where I've worked with another person who had similar problem -- while I was able to finally helped that person, it turned out that I wasn't too succesful myself simply because I was using SDK1.3.1.
http://forum.java.sun.com/thread.jsp?forum=37&thread=231662
The problem with using vrml in an applet is that if you need to read a .wrl file from the local disk with the vrml class loader, you run into two security violations: runtime permission to use the class loader and i/o permission to read the local disk file. The URL that I posted in the link shown above is still active and you can try to run this self-signed applet to see if it works for you.
V.V. -
Need help in interfacing Java and MSMQ.
Dear Java Guru,
I am migrating my application from Microsoft Visual Basic to Sun's Java. All the presentation, logic and data layers are already done in Java but we need to retain MSMQ feature as our application server and browsers are using Microsoft OS.
I have check with Microsoft newsgroups and the sample program and libraries they provide requires the use of VJ++. But I do not want to use VJ++ as I am using pure Java. I would be grateful if you can provide me some sample program and the libraries that I need to include in my classpath. Please advise how to interface Sun's Java to MSMQ in this context and any documentation will be helpful.
URGENT !
Regards,
yckok.Hi,
to use MSMQ in java you should embed MSMQ ActiveX in your java application, which gets messages from one queue type and transfer to another type. If you get my freeware API njawin (njawin11.zip) at http://www.simtel.net/pub/winnt/java/ you will find there an example with MSMQ COM control.
Vitally -
I need help with a java assignment
I am being taught java but dont really understand what i have to do. If you send me an email to [email protected] ill send you a copy and so help me with the assignement.
I am currently working on free web page so you can download the assignment.
Thank You Allhey, there's something wrong with my internet, i clicked on your email adress and nothing happened :(
too bad. maybe i can't do your assignment.
go see somee tutorials, maybe these will help you, also try to understand how API will elp you (to both you may find links from left column of this page) and also, see if there area some samples of how to do what you need to be done.
http://www.javaalmanac.com -- my favorited place for code samples.
also whan you have some saaignment or other task, then see if google finds you apropriate solution. and there's a search function in these forums as well.
i hope you get your homework doen in time... -
Need help with error java.lang.IllegalArgumentException: timestamp on bar b
My company uses Java based applications for real time streaming stock market information and I have come across 2 users that are generating the same error:
Bar.addBar failed adding com.abwg.bar.BasicBar 20071210-08:27:00.000 104.34 104.35 104.25 104.25 950 to com.abwg.bar.BasicBar 20071210-09:30:00.000 104.11 104.38 104.11 104.38 436 :java.lang.IllegalArgumentException: timestamp on bar being combined older than original bar
I have had no luck trying to determine what the cause of this error is, however both users experience very laggy performance shortly after launching the application. I have not been able to duplicate the problem, and the developers have not been able to provide any response or possible causes yet.
I'd be very appreciative if anyone could help me make some sense of what this error type might mean. It's got something to do with the computer that the application is being run on. One user is on a Mac 10.3 using J2SE 1.4.2_12 and the other is on Win XP using Java 1.6_3Thank you Frank and Carole for your response. The stated issue/error is resolved. It had to do with the upgrade somehow which lead to multiple certs for the same agent. Anyway, I had to delete ADS and all attached Agents, re-create ADS, re-create all Agents and re-register with the new ADS. I then manually re-registered the Directory Server instances on both the Primary and Secondary Servers with the new ADS. Voila, the DSCC Web console no longer prompts for server credentials.
But importing the Wild card cert issue still remains. I added the issuing CA chain to the ldap instance CA store and I see the certs listed. But when I try to import the P12 cert/key combo, I get an error which says something like: "The certificate is already in the database". But it is not, verified using certutil.
Yes internal CA or Self-signed Certs are fine. If I add the internal CA and Root CA to the cert store on my LDAP clients, then I am fine. No SSL errors. But want to avoid using such as we do have quite a few clients which would be connecting to the store. Hence want to use our enterprise wild card Cert. I am not sure if it is an issue importing a wild card pkcs12 format.
As mentioned above I did add the CA chain (which issued the wild card) to the actual instance, not the ADS. I can try that. But are you sure we need to add the Root CA to Tomcat ks.
And while we are at it, the Self-signed certs generated using the Console is only valid for 2 years. Is it possible to change the term ?
Thanks again. -
Needed help with updating java code
Hello all,
Let me begin by let you know I am not a programmer and I have tried to solve this by reading on the net. I am a network admin so I tech knowledge but no programming.
I have a webcam sending a Jpg to an FTP site and there I have used an applet called view.class to refresh once a second.
site:http://70.154.170.253/webcamold.html
My problems is now that it refreshes the same image over and over. It refreshes the cached image not the new image.
From reading I suspect that it has to do with the newer version of java (it used to work fine).
I have tried using JavaCam but same issue it just refreshes cached image. Also image flickers, the applet I am trying to fix was really smooth.
I have also tried to compile code that I found on this forum but I got error dealing with deprecated code.
Any help would be greatly appreciated!!!
Code:
import java.applet.Applet;
import java.awt.*;
import java.io.PrintStream;
public class View extends Applet
implements Runnable
public void init()
setBackground(Color.white);
String s = getParameter("refresh");
if(s == null)
update = 30;
else
try
update = Integer.parseInt(s);
catch(Exception _ex)
update = 30;
filename = getParameter("picture");
if(filename == null)
System.out.println("No filename given as parameter.");
md = new MediaTracker(this);
off = createImage(size().width, size().height);
refreshImage();
public void paint(Graphics g)
g.drawImage(off, 0, 0, this);
public void update(Graphics g)
paint(g);
public void refreshImage()
img = getImage(getDocumentBase(), filename);
md.addImage(img, 0);
try
md.waitForID(0);
catch(Exception exception)
exception.printStackTrace();
Graphics g = off.getGraphics();
g.drawImage(img, 0, 0, this);
img.flush();
public void run()
while(th != null)
try
refreshImage();
repaint();
Thread.sleep(update * 1000);
catch(Exception exception)
System.out.println("Error when thread was supposed to sleep: " + exception.getMessage());
public void start()
if(th == null)
th = new Thread(this);
try
th.start();
return;
catch(Exception exception)
System.out.println("Couldn't start thread: " + exception.getMessage());
return;
} else
return;
public void stop()
if(th != null)
th.stop();
th = null;
public void destroy()
stop();
public View()
update = 30;
Thread th;
String filename;
int update;
Image img;
Image off;
MediaTracker md;This is compile error free code and regarding your issues i don't think am good at this stuff
import java.applet.Applet;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.MediaTracker;
public class View extends Applet implements Runnable {
Thread th;
String filename;
int update;
Image img;
Image off;
MediaTracker md;
public void init() {
setBackground(Color.white);
String s = getParameter("refresh");
if (s == null) {
update = 30;
} else {
try {
update = Integer.parseInt(s);
} catch (Exception _ex) {
update = 30;
filename = getParameter("picture");
if (filename == null) {
System.out.println("No filename given as parameter.");
md = new MediaTracker(this);
off = createImage(size().width, size().height);
refreshImage();
public void paint(Graphics g) {
g.drawImage(off, 0, 0, this);
public void update(Graphics g) {
paint(g);
public void refreshImage() {
img = getImage(getDocumentBase(), filename);
md.addImage(img, 0);
try {
md.waitForID(0);
} catch (Exception exception) {
exception.printStackTrace();
Graphics g = off.getGraphics();
g.drawImage(img, 0, 0, this);
img.flush();
public void run() {
while (th != null) {
try {
refreshImage();
repaint();
Thread.sleep(update * 1000);
} catch (Exception exception) {
System.out.println("Error when thread was supposed to sleep: "
+ exception.getMessage());
public void start() {
if (th == null) {
th = new Thread(this);
try {
th.start();
return;
} catch (Exception exception) {
System.out.println("Couldn't start thread: "
+ exception.getMessage());
return;
} else {
return;
public void stop() {
if (th != null) {
th.stop();
th = null;
public void destroy() {
stop();
public View() {
update = 30;
}
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