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 you
The 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.
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Hello,
Of the several products we develop, one, a Java program, uses the Java Help help system (logically). The others use a standard Winhelp help system (developed in Robohelp). Our current workflow for developing a help system for the Java program is to batch convert the Winhelp RTF files into HTML files. The problem is, most of our Winhelp formatting is either dropped or incorrectly represented in the Java help file. Also, I prefer the look and feel of a Winhelp system over Java.
Is it possible for a Java program to be modified so that it supports a Winhelp help system and not a Java Help system? If so, how is this done, and where can one find information on the process?
If not, what options do we have to "pretty up" the Java output from the conversion?
Thanks!
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hi guys i need help i want to know how to call a prog to run and excute with java a command like shell in VB and System in c
Use Runtime. You have to make sure you read the output or the program will hang...
Runtime rt = Runtime.getRuntime();
Process rtProcess = rt.exec(cmd);
String result = readSTDOUT(rtProcess);
String readSTDOUT(Process p) throws Exception {
InputStream in = p.getInputStream();
byte [] output = new byte [1024];
int len;
StringBuffer buf = new StringBuffer();
while((len = in.read(output)) >= 0) {
buf.append(new String(output, 0, len));
in.close();
// check stderr if stdout was empty.
if (buf.length() == 0 ) {
in = p.getErrorStream();
while((len = in.read(output)) >= 0) {
buf.append(new String(output, 0, len));
in.close();
return buf.toString();
} -
All of the stuff I have is listed in my gig. My system has been randomly rebooting. Windows XP installed ok and the system runs ok enough for me to surf the web. It kind of has me stumped I can be on it for a long time and surf the web and it is fine, I have only installed one game simpsons hit and run and after playing that for a little while the system reboots. Sometimes it happens when I am not playing a game too . I used to have a Geforce 4 in the system and the reboots would happen after playing the simpsons for like 1 minute or 2 so I installed a radeon becuase I was planning to upgrade anyway. The system was running more stable with the radeon but today it rebooted on me again after playing the simpsons lfor like an hour. It would reboot and tell me the system recovered from a serious error BPCode:d1 yadda yadda os_ver and some other stuff. I set it to not reboot from an error and today it quit out of the simpsons and sent me to the desktop, I told it to shut down and thats when it gave me a blue screen and said something to the effect of ERROR_IRQL_NOT_ LESS_THAN. I tried testing my RAM and it passed 9 out of 11 tests but I had to go to work so I did not test it fully. Back when I had the geforce 4 in there i tried setting the FSB to 201 and that helped with overall system stability but it still rebooted alot. Tried uping RAM voltage to 2.70 and that helped a little too but system still reboots. I read in another post you guys said not to have SATA+PATA enabled but wouldn't the system not find CD-ROMS if I was set to SATA only? If anyone has seen this before or has any ideas please let me know any ideas or what else you might need to know. I will check RAM tonight and let memtest run all tests and check back here but if anyone has any ideas about this then please let me know.
Hey, NovJoe asked you about memory timings and that was the first thing I was going to ask you too. I have a similar system I'll list on the bottom. I have the Corsair 512x2 PC3700 @3,4,4,8 timing.....My system used to reboot itself A LOT. For NO apparant reason, no matter what I was doing, playing a game, chating online, or surfing websites. I've always had something wrong with my system so I can't tell you exactly what will help, but maybe you can check out some things and decide if you want to change them.
I guess first, you need to make sure all your voltage settings are right. Your processor will run OK with the stock voltages, but uping them a little doesnt hurt. I have mine at 1.55...
Your memory timings should be set at 2.7....The Bios auto is 2.5, but there have been a lot of posts and reviews that say uping the memory voltage to 2.7 (even PC3200), will give you better stability. I have mine at 2.75 because I overclock....I wouldnt recommend anything above 2.7 for you though unless you choose to...I've learned AGP voltages should be at 1.5, nothing more.
On the software side, my random reboots and lockups has 75% of the time corrupted important windows system files. Sometimes a little icon will appear at the corner next to the time, other times I will get no message. Run "chkdsk" through "Start" ~> "Run" and type "CHKDSK" in. If you have, good, but this is only one program to run. Disk Defragmenter also checks for corrupt files and will let you know if you have any.
Your reboots could be due to a corrupt file, and it doesnt have to be a Windows file either. I installed "CORECENTER" at least 3 time, fresh installs and updates, and I didnt have to run the program for it to corrput my system. I ended up deleting it and have not used it since.
I guess if your not sure a program is the problem, the last resort you should take is to format your system. I've formatted at least 15 times (my luck) and I'm sorry to say I've gotten used to it...I just partition my hard drive and store EVERYTHING important on it...so that if Windows refuses to boot or locks up and doesnt want ot start, I can safely partition the WINDOWS parition without loosing any of my data. Windows will even let you have partions with different file systems such as NTFS or FAT32 at the same time....(this is my case).
Ahhhh....I was writing my specs and I REMEMBERED SOMETHING! Corny i know, i'm on medication ...... anyway....try to run your MAT..found in BIOS under "Frequency and Voltage" (or something like that) to "FAST"....I know if I set it to "Ultra", my system was a little less reliable. Try changing your memory speeds in the same options list to "AUTO" or "200", give one a try because you should be running your memory at either one of these speeds. I assume "200" will give you a more reliable system because it is not workig faster than its rated speed.
Write back and tell me if any of this helped. It took me months of playing around and with my luck, to get this far, and things are working for me. It took a while to know and get a feeling of working with the BIOS to know my system well enough. If its not the hardware, then blame Microsoft .....serisouly though, it could be them and a nice format is needed (sorry to tell you)
MY SPECS:
X-Alien case with 4xx watt power supply...I wanted your case badly but was short on $...and then a week later after ordering the case I had the money..my luck
MSI 865PE NEO2 LS
Pentium4 2.4C ~>2.8 with 233FSB @ 1.55v MAT set to "SLOW"
Corsair TwinX PC3700 512x2 AT 3,4,4,8 @ 2.75v set to "AUTO"
ATI Radeon 9700 non-pro @ 1.5v
Zalman Alum/Copper Heatink/Fan
Santa Cruz sound card
Western Digital Special Edition 120gig hard drive w/ 8meg cache
*AGP/PCI bus frequency should be something like 66/33, greyed out but u can highlight it and change it
**AGP Aperture size get to 64....it should be no higher than 128 -
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: computer reboots whenever java is initiated.
Recently received a used computer with xp installed.
Every time I initiate something to do with java the computer restarts.
For Instance:
in control panel - clicking on the java console.
online - using online storage service "adrive.com" to upload files.
installing - running the java installer for jedit.
Each one of these things causes a reboot.
I've deleted and reinstalled the latest java runtime environment, ran virus/spyware scans, deleted everything from the computer I don't need, and cleaned the registry, but nothing has solved the problem.
Searched for a solution on google and troubleshooting guides, but the terms: java, reboot, xp, etc; are all so common that the results don't come anywhere close to the answer I need.Wouldn't you know it. After spending all this time searching for an answer, almost immediately after I posted this I found the answer here on this forum:
http://forums.sun.com/thread.jspa?forumID=32&threadID=689707
Thanks to: Caffeine0001
For those who want to know: All I did was update my -Display Adapter- driver through -Device Manager- and ran windows update. Windows update probably had nothing to do with the fix, but it updated .NET to 3.5 and updated IE to version 8.
Good To Go! -
Need help with basic Java programming
I'm having a little bit of trouble with my code. For the sake of argument, I've removed the code I'm having trouble with, because I know it was inaccurate. I'm trying to create a loop so that this program will keep going through and through until the user enters an invalid variable. I thought the default after the case statements was supposed to make the system exit and output my message. Those two problems, the loop and the default, are what I'm really having problems with. My code is posted below.
import javax.swing.JOptionPane;
import java.util.Locale;
import java.text.NumberFormat;
public class Retail
public static void main(String args[])
String firstNum;
String secondNum;
String result;
int prodNum; //first number to input
double quantity; //second number to input
double total = 0.0; //total of Prod * Quantity Sold for all items
// To use American Dollar
NumberFormat moneyFormat = NumberFormat.getCurrencyInstance( Locale.US );
// first number entered as string
firstNum = JOptionPane.showInputDialog( "Enter product number 1-5" );
// second number entered as string
secondNum = JOptionPane.showInputDialog( " Enter quantity of items sold" );
// convert values to type double or int from type string
prodNum = Integer.parseInt( firstNum );
quantity = Double.parseDouble( secondNum);
result="";
if ( prodNum >=1 && prodNum <=5 ) {
switch (prodNum)
case 1: // 1st product
total = 2.98 * quantity;
break;
case 2: // 2nd product
total = 4.50 * quantity;
break;
case 3: // 3rd product
total = 9.98 * quantity;
break;
case 4: //4th product
total = 4.49 * quantity;
break;
case 5:
total = 6.87 * quantity;
break;
default: JOptionPane.showMessageDialog( null, "Wrong product number entered" );
JOptionPane.showMessageDialog( null, moneyFormat.format(total), "Total Price of Items Purchased", JOptionPane.INFORMATION_MESSAGE );
System.exit(0);
***I know I need to put something in the user input message to state that any value other than 1-5 entered will cause the program to skip to the output, I'll put that in later.***When you post code, please use [code] and [/code] tags as described in Formatting Help on the message entry page. It makes it much easier to read and prevents accidental markup from array indices like [i].
-
Need help for a java assignment
i am having trouble with my java assignment, so i thought i will give it a try here and hope that i will get some help. ^^
the method is to load a file and try to create an object out of it. but even though the sequence of loading is correct, the method still doesn't work. there is no error in compilation and the coding seems correct to me. help?
the codes are below and if any other code is needed. ask me for it. =)
public void saveToFile(String fileName)
try
File f = new File(fileName);
PrintWriter p = new PrintWriter(f);
p.println(fileName);
p.println("***");
for(int i =0; i<categories.length; i++)
if(categories[i] != null)
p.print(categories.getCatNum());
Car[] x = categories[i].getListOfCars();
for(int q=0; q<x.length;q++)
if(x[q] != null)
if(x[q] instanceof EconomyCar)
p.print("Economy Car");
x[q].getCarNum();
x[q].getBrand();
x[q].getPrice();
else if(x[q] instanceof LuxuryCar)
p.print("Luxury Car");
x[q].getCarNum();
x[q].getBrand();
x[q].getPrice();
else if(x[q] instanceof SportCar)
p.print("Sport Car");
x[q].getCarNum();
x[q].getBrand();
x[q].getPrice();
p.println(x[q].getCarNum());
p.println(x[q].getBrand());
p.println(x[q].getPrice());
p.close();
catch(IOException e)
System.out.println("IO Error");
public void loadFromFile(String fileName)
try
File file = new File(fileName);
Scanner sc = new Scanner(file);
String shopName = sc.nextLine();
CarMart Cm = new CarMart(shopName);
while(sc.hasNextLine());
String line = sc.nextLine();
while(line.equals("***"));
int CateNum = sc.nextInt(); sc.nextLine();
Category Cate = new Category(CateNum);
String typeOfCar = sc.nextLine();
if(typeOfCar.equals("Economy Car"))
String CarNum = sc.nextLine();
String brand = sc.nextLine();
double price = sc.nextDouble(); sc.nextLine();
EconomyCar e = new EconomyCar(CarNum, brand, price);
else if(typeOfCar.equals("Luxury Car"))
String CarNum = sc.nextLine();
String brand = sc.nextLine();
double price = sc.nextDouble(); sc.nextLine();
LuxuryCar l = new LuxuryCar(CarNum, brand, price);
else if(typeOfCar.equals("Sport Car"))
String CarNum = sc.nextLine();
String brand = sc.nextLine();
double price = sc.nextDouble(); sc.nextLine();
SportCar s = new SportCar(CarNum, brand, price);
sc.close();
catch(FileNotFoundException a)
System.out.println("Filename not found");morgalr wrote:
erm. its supposed to save a file containing all the data of a car. then the loadFromFile method is supposed to load that file and create a car out of it.I want one, could you please make mine a Dodge Viper.A fascinating insight into your secret worries about your masculinity :) -
I'm writing a mazerace game...I need help from a Java Pro regarding GUI
I've tested my code using a textUI, but not successful with GUI.
Following are the files I have at present but are incomplete...someone please assist me, let me know what I'm missing to run the program successfully in a window.
All I need to do is to bring the maze (2D array) onto a window, and listen to the keys (A,S,D,W & J,K,L,I) and make the move accordingly (using the move method in the MazeRace Class)
This is my class - MazeRace
import javax.swing.*;
import java.io.*;
* This class is responsible for:
* -Initializes instance variables used to store the current state of the game
* -When a player moves it checks if the move is legal
* and updates the state of the game if move is allowable and made
* -Reports information about current state of the game when asked:
* o whether game has been won
* o how many moves have been made by a given player
* o what is the current configuration of the maze, etc.
public class MazeRace {
/** The Maze Race layout */
private static char[][] mazeLayout;
/** Dimensions of the maze */
//private static final int rowLength = mazeLayout.length;
//private static final int columnLength = mazeLayout[0].length;
/** space in the grid is a wall */
private static final char wall = 'X';
/** space in the grid has been used */
private static final char spaceUsed = '.';
/** space in the grid is available */
private static final char spaceAvailable = ' ';
/** Character for Charles, Ada & Goal*/
private static final char CHARLES = 'C';
private static final char ADA = 'A';
private static final char GOAL = 'G';
/** Location of Goal in the Maze */
private static int rowGoal = 0;
private static int columnGoal = 0;
/** Location of Ada in the Maze */
private static int rowAda = 0;
private static int columnAda = 0;
/** Location of Charles in the Maze */
private static int rowCharles = 0;
private static int columnCharles = 0;
/** Number of Ada's moves */
private static int countAdasMoves = 0;
/** Number of Charles's moves */
private static int countCharlesMoves = 0;
* Constructor for MazeRace
* ¶m mazeGrid - 2D array of characters
public MazeRace(char[][] mazeGrid){
this.mazeLayout = mazeGrid;
for (int row = 0; row < mazeLayout.length; row++){
for (int column = 0; column < mazeLayout[0].length; column++){
if (mazeLayout[row][column] == GOAL){
this.rowGoal = row;
this.columnGoal = column;
if (mazeLayout[row][column] == ADA){
this.rowAda = row;
this.columnAda = column;
if (mazeLayout[row][column] == CHARLES){
this.rowCharles = row;
this.columnCharles = column;
public boolean canMoveLeft(){
int rowA = this.rowAda;
int columnA = this.columnAda;
int rowC = this.rowCharles;
int columnC = this.rowCharles;
boolean canMove = false;
if (mazeLayout[rowA][columnA - 1] == spaceAvailable
|| mazeLayout[rowA][columnA - 1] == GOAL) {
canMove = true;
return canMove;
* This method takes in a single character value that indicates
* both the player making the move, and which direction the move is in.
* If move is legal, the player's position will be updated. Move is legal
* if player can move one space in that direction i.e. the player isn't
* moving out of the maze, into a wall or a space has already been used.
* @param moveDirection: indicates the player making the move and direction
* @return moveMade: boolean value true if move was made, false otherwise
public boolean move(char move){
boolean validMove = false;
/** store Ada's current row location in a temp variable */
int rowA = this.rowAda;
/** store Ada's current column location in a temp variable */
int columnA = this.columnAda;
/** store Charles current row location in a temp variable */
int rowC = this.rowCharles;
/** store Charles current column location in a temp variable */
int columnC = this.columnCharles;
/** if Ada is moving left, check if she can make a move */
if (move == 'A' && (mazeLayout[rowA][columnA - 1] == spaceAvailable
|| mazeLayout[rowA][columnA - 1] == GOAL)) {
/** if move is legal, then update old space to spaceUsed '.' */
mazeLayout[rowA][columnA] = spaceUsed;
/** update Ada's new position */
mazeLayout[rowA][columnA - 1] = ADA;
this.rowAda = rowA; //update new row location of Ada
this.columnAda = columnA - 1; //update new column location of Ada
validMove = true; //valid move has been made
countAdasMoves++; //increment Ada's legal move
/** if Ada is moving down, then check if she can make the move */
if (move == 'S'&& (mazeLayout[rowA + 1][columnA] == spaceAvailable
|| mazeLayout[rowA + 1][columnA] == GOAL)) {
mazeLayout[rowA][columnA] = spaceUsed;
mazeLayout[rowA + 1][columnA] = ADA;
this.rowAda = rowA + 1;
this.columnAda = columnA;
validMove = true;
countAdasMoves++;
/** if Ada is moving right, then check if she can make the move */
if (move == 'D'&& (mazeLayout[rowA][columnA + 1] == spaceAvailable
|| mazeLayout[rowA][columnA + 1] == GOAL)) {
mazeLayout[rowA][columnA] = spaceUsed;
mazeLayout[rowA][columnA + 1] = ADA;
this.rowAda = rowA;
this.columnAda = columnA + 1;
validMove = true;
countAdasMoves++;
/** if Ada is moving up, then check if she can make the move */
if (move == 'W'&& (mazeLayout[rowA - 1][columnA] == spaceAvailable
|| mazeLayout[rowA - 1][columnA] == GOAL)) {
mazeLayout[rowA][columnA] = spaceUsed;
mazeLayout[rowA - 1][columnA] = ADA;
this.rowAda = rowA - 1;
this.columnAda = columnA;
validMove = true;
countAdasMoves++;
/** if Charles is moving left, then check if he can make the move */
if (move == 'J'&& (mazeLayout[rowC][columnC - 1] == spaceAvailable
|| mazeLayout[rowC][columnC - 1] == GOAL)) {
mazeLayout[rowC][columnC] = spaceUsed;
mazeLayout[rowC][columnC -1] = CHARLES;
this.rowCharles = rowC;
this.columnCharles = columnC - 1;
validMove = true;
countCharlesMoves++;
/** if Charles is moving down, then check if he can make the move */
if (move == 'K'&& (mazeLayout[rowC + 1][columnC] == spaceAvailable
|| mazeLayout[rowC + 1][columnC] == GOAL)) {
mazeLayout[rowC][columnC] = spaceUsed;
mazeLayout[rowC + 1][columnC] = CHARLES;
this.rowCharles = rowC + 1;
this.columnCharles = columnC;
validMove = true;
countCharlesMoves++;
/** if Charles is moving right, then check if he can make the move */
if (move == 'L'&& (mazeLayout[rowC][columnC + 1] == spaceAvailable
|| mazeLayout[rowC][columnC + 1] == GOAL)) {
mazeLayout[rowC][columnC] = spaceUsed;
mazeLayout[rowC][columnC + 1] = CHARLES;
this.rowCharles = rowC;
this.columnCharles = columnC + 1;
validMove = true;
countCharlesMoves++;
/** if Charles is moving up, then check if he can make the move */
if (move == 'I'&& (mazeLayout[rowC - 1][columnC] == spaceAvailable
|| mazeLayout[rowC - 1][columnC] == GOAL)){
mazeLayout[rowC][columnC] = spaceUsed;
mazeLayout[rowC - 1][columnC] = CHARLES;
this.rowCharles = rowC - 1;
this.columnCharles = columnC;
validMove = true;
countCharlesMoves++;
return validMove;
* This method indicates whether the current maze configuration is a winning
* configuration for either player or not.
* Return 1 if Ada won
* Return 2 if Charles won
* Return 0 if neither won
* @return int won: Indicates who won the game (1 or 2) or no one won the
* game (0)
public static int hasWon() {
int won = 0;
/** if location of Goal's row and column equals Ada's then she won */
if (rowGoal == rowAda && columnGoal == columnAda){
won = 1;
/** if location of Goal's row and column equals Charles's then he won */
if (rowGoal == rowCharles && columnGoal == columnCharles){
won = 2;
/** if both players are away from the Goal then no one won */
if ((rowGoal != rowAda && columnGoal != columnAda) &&
(rowGoal != rowCharles && columnGoal != columnCharles)) {
won = 0;
return won;
* This method indicates whether in the current maze configuration both
* players are caught in dead ends.
* @return deadEnd: boolean value true if both players can't make a valid
* move, false otherwise
public static boolean isBlocked(){
boolean deadEnd = false;
/** Check if Ada & Charles are blocked */
if (((mazeLayout[rowAda][columnAda - 1] == wall
|| mazeLayout[rowAda][columnAda - 1] == spaceUsed
|| mazeLayout[rowAda][columnAda - 1] == CHARLES)
&& (mazeLayout[rowAda][columnAda + 1] == wall
|| mazeLayout[rowAda][columnAda + 1] == spaceUsed
|| mazeLayout[rowAda][columnAda + 1] == CHARLES)
&& (mazeLayout[rowAda + 1][columnAda] == wall
|| mazeLayout[rowAda + 1][columnAda] == spaceUsed
|| mazeLayout[rowAda + 1][columnAda] == CHARLES)
&& (mazeLayout[rowAda - 1][columnAda] == wall
|| mazeLayout[rowAda - 1][columnAda] == spaceUsed
|| mazeLayout[rowAda - 1][columnAda] == CHARLES))
&& ((mazeLayout[rowCharles][columnCharles - 1] == wall
|| mazeLayout[rowCharles][columnCharles - 1] == spaceUsed
|| mazeLayout[rowCharles][columnCharles - 1] == ADA)
&& (mazeLayout[rowCharles][columnCharles + 1] == wall
|| mazeLayout[rowCharles][columnCharles + 1] == spaceUsed
|| mazeLayout[rowCharles][columnCharles + 1] == ADA)
&& (mazeLayout[rowCharles + 1][columnCharles] == wall
|| mazeLayout[rowCharles + 1][columnCharles] == spaceUsed
|| mazeLayout[rowCharles + 1][columnCharles] == ADA)
&& (mazeLayout[rowCharles - 1][columnCharles] == wall
|| mazeLayout[rowCharles - 1][columnCharles] == spaceUsed
|| mazeLayout[rowCharles - 1][columnCharles] == ADA))) {
deadEnd = true;
return deadEnd;
* This method returns an integer that represents the number of moves Ada
* has made so far. Only legal moves are counted.
* @return int numberOfAdasMoves: number of moves Ada has made so far
public static int numAdaMoves() {
return countAdasMoves;
* This method returns an integer that represents the number of moves Charles
* has made so far. Only legal moves are counted.
* @return int numberOfCharlesMoves: number of moves Charles has made so far
public static int numCharlesMoves() {
return countCharlesMoves;
* This method returns a 2D array of characters that represents the current
* configuration of the maze
* @return mazeLayout: 2D array that represents the current configuration
* of the maze
public static char[][] getGrid() {
return mazeLayout;
* This method compares contents of this MazeRace object to given MazeRace.
* The two will not match if:
* o the two grids have different dimensions
* o the two grids have the same dimensios but positions of walls, players or
* goal differs.
* @param MazeRace: MazeRace object is passed in and compared with the given
* MazeRace grid
* @return boolean mazeEqual: true if both grids are same, false otherwise
public static boolean equals(char[][] mr) {
boolean mazeEqual = true;
/** If the length of the arrays differs, then they are not equal */
if (mr.length != mazeLayout.length || mr[0].length != mazeLayout[0].length){
mazeEqual = false;
} else {
/** If lengths are same, then compare every element of the array to other */
int count = 0;
int row = 0;
int column = 0;
while( count < mr.length && mazeEqual) {
if( mr[row][column] != mazeLayout[row][column]) {
mazeEqual = false;
count = count + 1;
row = row + 1;
column = column + 1;
return mazeEqual;
* This method represents the current state of the maze in a string form
* @return string mazeString: string representation of the maze configuration
public String toString() {
String mazeString = "";
for (int row = 0; row < mazeLayout.length; row++){
for (int column = 0; column < mazeLayout[0].length; column++){
mazeString = mazeString + mazeLayout[row][column];
mazeString = mazeString + "\n";
return mazeString.trim();
The following is the Driver class: MazeRaceDriver
import javax.swing.*;
import java.io.*;
* This class is the starting point for the maze race game. It is invoked
* from the command line, along with the location of the layout file and
* the desired interface type. Its main purpose is to initialize the
* components needed for the game and the specified interface.
public class MazeRaceDriver {
* A method that takes a text file representation of the maze and
* produces a 2D array of characters to represent the same maze.
* @param layoutFileName location of the file with the maze layout
* @return The maze layout.
public static char[][] getLayoutFromFile( String layoutFileName )
throws IOException {
BufferedReader br = new BufferedReader(new FileReader(layoutFileName));
String s = br.readLine();
int r = 0; // start at row 1
int c = s.length(); // initialize column to the length of the string
while(s != null){
r++;
s = br.readLine();
char[][]grid = new char[r][c];
// this part, gets the text file into a char array
BufferedReader brr = new BufferedReader(new FileReader(layoutFileName));
String ss = brr.readLine();
int row = 0;
while(ss != null){
for(int col = 0; col < c; col++){
grid[row][col] = ss.charAt(col);
row++;
ss = brr.readLine();
return grid;
* The main method of your program.
* @param args command-line arguments provided by the user
public static void main( String[] args ) throws IOException {
// check for too few or too many command line arguments
if ( args.length != 2 ) {
System.out.println( "Usage: " +
"java MazeRaceDriver <location> <interface type>" );
return;
if ( args[1].toLowerCase().equals( "text" ) ) {
char[][] layout = getLayoutFromFile( args[0] );
MazeRace maze = new MazeRace( layout );
MazeRaceTextUI game = new MazeRaceTextUI( maze );
game.startGame();
else if ( args[1].toLowerCase().equals( "gui" ) ) {
// Get the filename using a JFileChooser
// read the layout from the file
// starting the window-based maze game
JFileChooser chooser = new JFileChooser("");
int returnVal = chooser.showOpenDialog(null);
if (returnVal == JFileChooser.APPROVE_OPTION) {
BufferedReader br =
new BufferedReader(new FileReader(chooser.getSelectedFile()));
String inputLine = br.readLine();
while (inputLine != null) {
System.out.println(inputLine);
inputLine = br.readLine();
char[][] layout = getLayoutFromFile( args[0] );
MazeRace maze = new MazeRace( layout );
MazeRaceWindow game = new MazeRaceWindow( maze );
game.startGame();
} else {
System.out.println("Cancel was selected");
} else {
System.out.println( "Invalid interface for game." +
" Please use either TEXT or GUI." );
return;
The following is the MazeRaceWindow class
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.io.*;
* This class is responsible for displaying the maze race game. It should
* set up the maze window when the game is started and update the display
* with each move.
public class MazeRaceWindow extends JFrame {
private JLabel[][] mazeLabel;
private JFrame mazeFrame;
* Reference to the underlying MazeRace object which needs to be
* updated when either player moves
private MazeRace maze;
* Class constructor for the GUI object
* @param maze the underlying MazeRace object
public MazeRaceWindow( MazeRace maze ) {
this.maze = maze;
System.out.println(maze);
mazeFrame = new JFrame();
mazeFrame.setSize(200,200);
Container content = mazeFrame.getContentPane();
System.out.println(content);
content.setLayout(new GridLayout(.length, mazeLayout[0].Length));
for (int i = 0; i < MazeRace.length; i++ ) {
for (int j = 0; j < MazeRace[0].length; j++ ) {
mazeLabel = new JLabel[MazeRace.rowLength][MazeRace.columnLength];
content.add(mazeLabel[i][j]);
System.out.println(mazeLabel[i][j]);
mazeFrame.pack();
mazeFrame.setVisible(true);
//content.add(mazeLabel);
//mazeFrame.addKeyListener(this);
* A method to be called to get the game running.
public void startGame() throws IOException {
System.out.println();
/* loop to continue to accept moves as long as there is at least one
* player able to move and no one has won yet
while ( !maze.isBlocked() && maze.hasWon() == 0 ) {
// prints out current state of maze
System.out.println( maze.toString() );
System.out.println();
// gets next move from players
System.out.println("Next move?");
System.out.print("> ");
BufferedReader buffer =
new BufferedReader( new InputStreamReader( System.in ) );
String moveText = "";
moveText = buffer.readLine();
System.out.println();
// note that even if a string of more than one character is entered,
// only the first character is used
if ( moveText.length() >= 1 ) {
char move = moveText.charAt( 0 );
boolean validMove = maze.move( move );
// The game has finished, so we output the final state of the maze, and
// a message describing the outcome.
System.out.println( maze );
int status = maze.hasWon();
if ( status == 1 ) {
System.out.println( "Congratulations Ada! You won the maze in "
+ maze.numAdaMoves() + " moves!" );
} else if ( status == 2 ) {
System.out.println( "Congratulations Charles! You won the maze in "
+ maze.numCharlesMoves() + " moves!" );
} else {
System.out.println( "Stalemate! Both players are stuck. "
+ "Better luck next time." );
The following is the Listener class: MazeRaceListener
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
/** Listens for keystrokes from the GUI interface to the MazeRace game. */
public class MazeRaceListener extends KeyAdapter {
* Reference to the underlying MazeRace object which needs to be updated
* when either player moves
private MazeRace maze;
* Reference to the MazeRaceWindow object that displays the state of
* the game
private MazeRaceWindow mazeWindow;
* Class constructor for the key listener object
* @param maze the underlying MazeRace object
public MazeRaceListener( MazeRace maze ) {
this.maze = maze;
* A method that sets which JFrame will display the game and need to be
* updated with each move.
* @param window the JFrame object that displays the state of the game
public void setMazeRaceWindow( MazeRaceWindow window ) {
mazeWindow = window;
* A method that will be called each time a key is pressed on the active
* game display JFrame.
* @param event contains the pertinent information about the keyboard
* event
public void keyTyped( KeyEvent event ) {
char move = event.getKeyChar();
// TODO: complete method so that the appropriate action is taken
// in the game
//mazeLabel.setText(String.valueOf(move).toUpperCase());
}and listen to the keys (A,S,D,W & J,K,L,I) and make the move accordingly [url http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html]How to Use Key Bindings
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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!
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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.
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Hey
I am doing a bachelor of Multimedia and for some reason I was forced to do Programming 1 which is just Java programing.I have been doing pretty well but we have the final exam coming up on Thursday and they told us to learn how to do this question but I have no idea how to do it, could someone please help me?
Write a program that reads a file containing a list of students' student numbers and names, and then writes out another file in which the students have been formed into project groups.
Sample input file:
96439530 Naranek, Kosh
08532109 Ivanova, Susan
87642078 Sheridan, John
44327889 Varner, Dell
98100023 Kotto, Vir
66345689 Sinclair, Jeffrey
77421009 Garibaldi, Michael
88775544 Winters, Talia
54321098 Alexander, Lyta
12345098 Mollari, Londo
03465499 Takashima, Laurel
88765432 Kyle, Benjamin
08876500 Keffer, Warren
07687878 Cole, Marcus
For the project course: no group should have more than 5 members; and it is desireable that all groups have as close to 5 members as possible; and that students be allocated to groups alphabetically by family name, as in this sample output file:
Group 1:
Lyta Alexander (54321098)
Susan Ivanova (08532109)
Benjamin Kyle (88765432)
John Sheridan (87642078)
Dell Varner (44327889)
Group 2:
Marcus Cole (07687878)
Warren Keffer (08876500)
Londo Mollari (12345098)
Jeffrey Sinclair (66345689)
Talia Winters (88775544)
Group 3:
Michael Garibaldi (77421009)
Vir Kotto (98100023)
Kosh Naranek (96439530)
Laurel Takashima (03465499)
Students' names are first sorted (Alexander, Cole, Garibaldi, Ivanova, ...), then allocated to the tutes in rotation (Alexander to 1, Cole to 2, Garibaldi to 3, Ivanova to 1, ...).
Note also that the student's details are written in a different format from the input. You may make the (usually wrong!) assumption that each student has a simple one-word family name and one other name.I'm sorry too annoy you again but I don't know how to implement what you told me. Here is my current code:
import java.io.*;
import java.util.*;
class DetailSortTest {
public void run() {
try {
BufferedReader in = new
BufferedReader(new FileReader ("Data.txt"));
String line = in.readLine();
String[] names = new String [10];
int i = 0;
PrintWriter FileOut = new
PrintWriter(new FileWriter ("Data 2.txt"));
processFilesTest(in, FileOut);
in.close();
FileOut.close();
} catch (FileNotFoundException f) {
System.out.println("Could Not Open The File");
} catch (IOException i){
System.out.println(i.getMessage());
public void processFilesTest (BufferedReader in, PrintWriter FileOut)
throws IOException {
String data[] = new String[100];
List dList = new ArrayList();
String NLine = in.readLine();
FileOut.println(NLine);
public static void main(String[] args) {
DetailSortTest anObject = new
DetailSortTest();
anObject.run();
How would I do it I tried:
NLine.split(data[2]+""+data[1]+""+data[0]);
But all that displays is null, null, null
I know I am probably so stupid but I really appreciate the help
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