Java is NOT Platform Independent ????????
Hai.
My friend told ...
we can able to say java is platform independent.
but
in one company (software anaylist) ask
talk about java is not platform independent...
so how its possible..
plz i want clear cuts...
even i search in google also.. but i cant get clearlly.........
yours
advance happy pongal and upcomming festivals
drvijayy2k2
>
A quick example I recently encountered of platform
dependence was in character encoding/decoding. Have
a look at how Solaris, Linux and Windows print out
the full range of bytes when they are encoded as
Strings. There are lots of little differences, happy
discovering.This is a good illustration. By default java uses the character encoding which it believes to be in general use on the platform it's running on, but you can specify the character encoding explicitly. So, by default, the Java program addapts it's exact behaviour to the platform.
Is "a platform independant" program one which produces the same file format on systems which will interpret that file format different ways? Or is it one that generates a file format that will produce equivalent results on two different systems?
There's a similar dilema with "look and feel" (i.e. window gadgets etc.). Should a platform independant program use the same look and feel on systems whose native look and feel is different, or should it "blend in"?
Java leaves these choices to the programmer.
Similar Messages
-
Why java is called platform independent
Hello
Why java is called as platform independent?Any body please give a detailed explanation since im a beginner to java technology.
ThankYou
JkBigDaddyLoveHandles wrote:
georgemc wrote:
SunFred wrote:
Java is not platform independent since it depends on the Java platform ;)Don't complicate matters!I always thought the phrase should have been "platform agnostic"It's a phrase I've used meself -
Why java is called platform independent? "write once, run anywhere" code...
I do have a answer for this. Please shed some light whether i am right or wrong.
When you say java as platform independent, it means that, any java program once compiled to java class can be transferred to anyother machine(say, from windows to unix) can be executed, provided the destination machine has JVM.
where as, in C/C++, if we transfer the object files from one machine to another machine, they will not be executed and they have to be re-compiled in the other machine.
Am i correct?
please, do give me your idea on this...
thanks...Thanks george !
-
Java is a platform independent
how can we say that java is a plateform independent language, would u like to send me an example and procedure.
thanks in advance.Oh, on review of your posting history, I see that you have been asking a bunch of similarly strange short questions today, that they do appear to be homework, that you often spam the forums with similar cross-posts, post incorrectly (and for god-knows what reason) to the "forums.sun.com News and Updates" forum, that you rarely reply to these strange requests and that Google appears to not be working on your computer. Please show that you are doing at least a small bit of your own work here, you lazy sod.
-
Java platform independent.what is a platform?
This question has been haunting me for a long time.
When we say Java is platform independent,what does the term platform
indicate?
I think it is Processor+Operating System.
But people talk only of Operating System as platform.
A processor has its own instruction set that is different from that of other processors.An executable code on one processor doesn't run on another processor,whatever may be the operating system.
Java code is platform independent because it is just compiled to byte code and that byte code is interpreted and run on a JVM.Here the JVM is different for different platforms.
My question is:
consider two platforms:
Intel Pentium+MS Windows.
and AMD Athlon+MS Windows.
Is the same JVM used for both these platforms?or not?WHY?
If only Operating System is Considered as platform,what happens to the underlying processor?<troll style="flamesuit: on;">Java is not plateform inderpendent, java runs on one plateform, the Java Platform.</troll>
The "Intel / AMD + MS Windows" is two forks of one plateform, the x86 / Windows plateform.
You could extends the x86/Windows JVM to include Intel extras in such a way that it would not run on AMD/Windows.
One way you could define a plateform is as a binary format, processor intuction set and public API.
So java == .class format, bytecode and the java.* packages
and Linux x86 == ELF, x86 and POSIX (plus others, such as X)
and FreeBSD x86 == ELF, x86 and POSIX (plus others, such as X)
and Cygwin == ELF, x86 and POSIX (plus others, such as X)
and Windowsx86 == PE, x86, MFCs
But does that mean Linux, FreeBSD and Cygwin are the same plateform, well kind-of, they are all unix-sqe, and in some cases the binarys are interchangable (a small plug in to FreeBSD will let you run Linux software, the same sort of thing is aviable to Solaris, and some very small (hello world-level) will actually run (I've seen this in the case of a Linux HelloWorld on a BeOS machine). -
Why java is platform independent ?
what is the meaning of java is platform independent ? is it just because of java code can be run in windows/linux/unix platform ? but then C/C++ also can be run in windows/linux/unix . so why those are not called platform independent ?
why java is called platform independent ?c/c++ creates object code . similary java creates bytecode . java uses interpreter JVM to execute . similary c/c++ object code also executes in any platform. so where is the real difference ?
the classes do not need to be recompiled for different platforms. what do u mean by this ? ".....classes ( i.e bytecode) dont need recompilation ..." .....ok....but same thing is true for C/C++ object code also !! they also dont need recompilation.
where is the difference ? -
Platform Independent , Reality or Myth
Does Java Platform independent in reality ??
Or in reality Java is a combination of Platform Independent Complier with Platform Dependent Interpreter !!!!After checking out the link
http://java.sun.com/docs/books/tutorial/getStarted/int
ro/definition.html
We can conclude at the same point which I raised
earlier ,i.e , Platform Independent Compiler with
Platform dependent Interpreter (JVM).the compiler is not platform independent, the code it produces is though
can't you see the difference ? you don't have to recompile your code to port it to another environment, you just have to make sure that the JVM is installed in this environment
think about applets, the advantage may seem clearer -
Java is Platform Independent - good, but why is it not version independent?
Dear developers,
Development in java is becoming so independent to its versions. The code which works fine on 1.2.0 may or may not work on 1.3.1 and which works on 1.3.1 dont work fine on 1.4.0. I have been experiencing these problems from quite a few time. So i just want to know am i doing a mistake or java is like that only.
And even if a code works fine on 1.4.1 with using only methods and classes available right from 1.2.0 also didnt work properly on 1.2.0. So how can we go confidently in to Production.
Problems faced in GUI using Swing Components and In Socket Connections using HttpURLConnection kind of code.Development in java is becoming so independent to its
versions.Actually Development in java is becoming so dependent to its
versions is what i mean. -
Need platform independent java code for TNS PING
Hi, I am able to ping server /ip address. but unable to ping some TNS entry.
There is one way to ping TNS entry using System command, but that will make my code platform dependent. i want platform independent code.. need code help for TNS Ping to database server.. here are my code:
---Code for server / Ip address ping:---------
package DBM;
import java.io.IOException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.ArrayList;
import oracle.net.TNSAddress.*;
public class PingServer
public static void main(String[] args)
System.out.println(" Server Pinging Starts...");
ArrayList<String> list=new ArrayList<String>();
list.add("g5u0660c.atlanta.hp.com");
list.add("g1u1675c.austin.hp.com");
list.add("gvu1785.atlanta.hp.com");
list.add("10.130.14.109");
list.add("10.130.0.173");
list.add("DESCRIPTION = (SDU = 32768) (enable = broken) (LOAD_BALANCE = yes) (ADDRESS = (PROTOCOL = TCP)(HOST = gvu1515.atlanta.hp.com)(PORT = 1525))(ADDRESS = (PROTOCOL = TCP)(HOST = gvu1785.atlanta.hp.com)(PORT = 1525)");
list.add("IDSENGI");
//This Ipadd variable is used to convert the arraylist into String
String ipadd="";
try
for(String s: list)
ipadd=s;
// InetAddress is class.in this class getByName()is used to take only string parameter.
InetAddress inet = InetAddress.getByName(ipadd);
//InetAddress inet1 =InetAddress.getAllByName("IDESENGP");
System.out.println("Sending Ping Request to " + ipadd);
//in InetAddress call IsReachabe(3000)method is used to ping the server IP and if ping is successfully then return true otherwise false.
//IsReachable()take time in millisecond and return type is boolean.
System.out.println("Host is reachable: "+inet.isReachable(3000));
System.out.println("Server Pinging program is working fine........");
catch (UnknownHostException e)
System.err.println("Host does not exists");
catch (IOException e)
System.err.println("Error in reaching the Host");
----Code for TNS ping using system host----
package DBM;
import java.io.*;
public class doscmd
public static void main(String args[])
try
Process p=Runtime.getRuntime().exec("cmd /c tnsping IDSENGP");
p.waitFor();
BufferedReader reader=new BufferedReader(new InputStreamReader(p.getInputStream()));
String line=reader.readLine();
while(line!=null)
System.out.println(line);
line=reader.readLine();
catch(IOException e1) {}
catch(InterruptedException e2) {}
System.out.println("Done");
The above two codes are working absolutely fine... but need TNS ping program is platform dependent..we need to deploy it in both windows, unix...
Please help.You don't need to install another JDK, just use the api from 1.2 and you should be fine. You can even use the 1.4 jdk to compile as if it were 1.2 by using the -target option in javac.
-
Is Java Byte Code is 100% platform independent
Hi all
A my room fellow is disturbing me about the platform independency of JAVA.
Now i only wan to know that generated Byte Code will be same if it is generated on different platforms (Window,Linux,Unix etc)using their respected JVM
Thanks in advanceThe "Platform Independency" of Java is a bit of a joke
to me. You need a JVM that is platform dependent to
run it. Now granted, you can write one application
and itll run on any platform, but that's only assuming
they have the JVM installed on them. Not to say that
Java isn't cool and all, but the "platform
independency" solution still has a reliance on
something that is platform dependent... It's like
driving an automatic and saying you can drive....Sure,
you are making the car go, but something is doing the
shifting for you....(C: I guess I'm just arguing for
the sake of arguing...Well if you want to argue that point then no language is platform independant. C code for instance needs a compiler for the platform you want to compile it to run on and that compiled code won't work on any other platform. Ultimately every program has something that ties it to a particular platform, that's just the nature of things in computers.
The idea of platform independance was the removal of the need to re-compile a program with a native compiler just to get it to run on that platform.
Instead Sun opted to have a compact JVM to interpert the byte code and have the byte code standard across all implementations of the JVM. -
How do u say java is platform independent
how do u say java is platform independent.....when a .class file for a program cannot be executed in another system with no java installed in it.......
Pictograms are language independent (sort of)
do you expect them to work in the land of the blind? -
Determining free disk space in a platform independent "java-like" way?
how can i determine free disk space in a platform independent "java-like" way?
Search the forum "free disk space".
-
Platform independency...any chance ?
hi...java code (.class files ) are platform independence. It is supposed to run any platform.(i believe this) [ // it is fine in different windows machine ].
However, i was in argue with my friend..... He told that each platform (windows,Unix,Macintosh) have different JVM . so there is a chance that the class file may be rejected by the JVM in different platform.
is it true ?
if Yes.......then independency is lost !!! i can not call it is a pure platform independent.......are people trying for any remedy ?There are many different JVMs. Sun makes JVMs, IBM makes JVMs, M$ used to make JVMs, I think Blackdown makes JVMs, etc.
As long as a JVM matches the spec, then a given class file is portable across different VMs. Just like if I create a Word doc on the PC, I can read it with word on my Mac.
BUT (you knew there was going to be a "but", didn't you), there are different versions of VMs and the spec has changed over the years. Just like MS Word from 1990 probably won't read a document you create with the MS Word that you buy today, similarly you need to make sure the version of your class file is no newer than the VM. If the class file is an older version than the VM, it will generally work--they're backward compatible that way. Or is it forward compatible.
Also, there are things that are legal Java code that won't necessarily translate from one platform to another that well. GUI stuff can be slippery that way, I understand. Some other things too, but I forget what.
Is Java perfectly platform independent in that any class file generated anywhere anytime is guaranteed to run on any other VM? No, of course not.
Is it easy to create applications that you can run with no changes on Mac, Windows, Linux, Solaris, and maybe others that I'm not aware of? Absolutely. Many of the apps I've developed in the last few years have been developed and unit-tested on Windows (and even Mac to some extent) and run on Linux or Solaris, without me even needing to think about it. (Not that you never need to think about it, but it's not an overriding concern.) -
Error when starting Java(TM) ME Platform SDK 3.0
hey guys, I get this error when starting Java(TM) ME Platform SDK 3.0. When I installed it it installed 'successfully' and then I double clicked the file on the desktop (I'm using Windows Vista 32bit Home premium) and it gave me the following error when saying 'Starting Modules':-------------------------------------------------------------------------------
Log Session: Sunday, February 13, 2011 1:52:25 PM GMT
System Info: Product Version = Java(TM) ME Platform SDK 3.0
Operating System = Windows Vista version 6.0 running on x86
Java; VM; Vendor = 1.6.0_23; Java HotSpot(TM) Client VM 19.0-b09; Sun Microsystems Inc.
Runtime = Java(TM) SE Runtime Environment 1.6.0_23-b05
Java Home = C:\Program Files\Java\jdk1.6.0_23\jre
System Locale; Encoding = en_GB (cdctoolbar); Cp1252
Home Directory = C:\Users\Molten Ice
Current Directory = C:\Program Files\Java\Java_ME_platform_SDK_3.0\bin
User Directory = C:\Users\Molten Ice\javame-sdk\toolbar\3.0
Installation = C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\javamesdk1
C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\ide10
C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\java2
C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\mobility8
C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\profiler2
C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9
Boot & Ext. Classpath = C:\Program Files\Java\jdk1.6.0_23\jre\lib\resources.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\rt.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\jce.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\modules\jdk.boot.jar;C:\Program Files\Java\jdk1.6.0_23\jre\classes;C:\Program Files\Java\jdk1.6.0_23\jre\lib\ext\dnsns.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\ext\localedata.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\ext\sunjce_provider.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\ext\sunmscapi.jar;C:\Program Files\Java\jdk1.6.0_23\jre\lib\ext\sunpkcs11.jar
Application Classpath = C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9\lib\boot.jar;C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9\lib\org-openide-modules.jar;C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9\lib\org-openide-util.jar;C:\Program Files\Java\jdk1.6.0_23\lib\dt.jar;C:\Program Files\Java\jdk1.6.0_23\lib\tools.jar
Startup Classpath = C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9\core\core.jar;C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\platform9\core\org-openide-filesystems.jar;C:\Program Files\Java\Java_ME_platform_SDK_3.0\toolbar\javamesdk1\core\locale\core_cdctoolbar.jar
WARNING [org.netbeans.core.projects.cache]: Inefficient to include an empty layer in a module: jar:file:/C:/Program%20Files/Java/Java_ME_platform_SDK_3.0/toolbar/javamesdk1/modules/org-netbeans-modules-javame-common.jar!/org/netbeans/modules/javame/common/resources/layer.xml
WARNING [org.netbeans.core.projects.cache]: Inefficient to include an empty layer in a module: jar:file:/C:/Program%20Files/Java/Java_ME_platform_SDK_3.0/toolbar/javamesdk1/modules/org-netbeans-modules-e2e.jar!/org/netbeans/modules/e2e/layer.xml
WARNING [org.openide.filesystems.Ordering]: Not all children in Services/MIMEResolver/ marked with the position attribute: [org-netbeans-modules-javame-netmon-data-NetMonDataResolver.xml], but some are: [org-netbeans-modules-java-mime-resolver.xml, org-apache-tools-ant-module-mime-resolver.xml, org-netbeans-modules-editor-settings-storage-mime-resolver.xml, org-netbeans-modules-url-mime-resolver.xml, org-netbeans-modules-pdf-mime-resolver.xml, org-netbeans-modules-jar-mime-resolver.xml, org-netbeans-modules-editor-codetemplates-mime-resolver.xml]
WARNING [org.openide.filesystems.Ordering]: Not all children in Services/MIMEResolver/ marked with the position attribute: [org-netbeans-modules-javame-netmon-data-NetMonDataResolver.xml], but some are: [org-netbeans-modules-java-mime-resolver.xml, org-apache-tools-ant-module-mime-resolver.xml, org-netbeans-modules-editor-settings-storage-mime-resolver.xml, org-netbeans-modules-url-mime-resolver.xml, org-netbeans-modules-pdf-mime-resolver.xml, org-netbeans-modules-jar-mime-resolver.xml, org-netbeans-modules-editor-codetemplates-mime-resolver.xml]
[ 0] INFO - ootstrap.PropertyEditorManager - Registering custom property editors
[ 117] INFO - bootstrap.ObjectGraphProcessor - Consolidating dependencies...
[ 217] INFO - bootstrap.ObjectGraphProcessor - Consolidated dependencies...
[ 317] INFO - bootstrap.ObjectGraphProcessor - Calculating order...
[ 417] INFO - bootstrap.ObjectGraphProcessor - Calculated order
[ 523] INFO - un.jme.toolkit.bootstrap.Batch - Initializing objects...
[ 627] INFO - un.jme.toolkit.bootstrap.Batch - Applying I18N
[ 732] INFO - un.jme.toolkit.bootstrap.Batch - Initialized objects
[ 832] INFO - un.jme.toolkit.bootstrap.Batch - Calling create() methods...
[ 932] INFO - un.jme.toolkit.bootstrap.Batch - Calling start() methods...
[ 1032] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 2166] WARN - mpl.ObjectServerConnectionImpl - Remote object server is not running at service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 2268] INFO - l.process.GenericProcessRunner - Starting process: C:\Program Files\Java\Java_ME_platform_SDK_3.0/bin/device-manager.exe
[ 3384] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 5476] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 7576] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 9677] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 11777] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 13877] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 15977] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 18077] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 20177] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 22277] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 23379] ERROR - un.jme.toolkit.bootstrap.Batch - Problem calling start() on DeviceManagerConnection
java.lang.reflect.InvocationTargetException
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:597)
at com.sun.jme.toolkit.bootstrap.Batch.invoke(Unknown Source)
at com.sun.jme.toolkit.bootstrap.Batch.tryInvoke(Unknown Source)
at com.sun.jme.toolkit.bootstrap.Batch.startObjects(Unknown Source)
at org.netbeans.modules.javame.common.container.Module.start(Module.java:21)
at org.netbeans.modules.javame.common.container.ContainerSupport.startModule(ContainerSupport.java:67)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.getDeviceManagerConnection(DevicemanagerHelper.java:41)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.ensureConnected(DevicemanagerHelper.java:48)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.getDeviceManager(DevicemanagerHelper.java:84)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.ensureDMStarted(AutoInstaller.java:292)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.restored(AutoInstaller.java:63)
at org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:421)
at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:342)
at org.netbeans.ModuleManager.enable(ModuleManager.java:906)
at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:428)
at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:364)
at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:276)
at org.netbeans.core.startup.Main.getModuleSystem(Main.java:165)
at org.netbeans.core.startup.Main.start(Main.java:312)
at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:110)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.io.IOException: Failed to retrieve RMIServer stub: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect]
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:338)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.connect(Unknown Source)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.start(Unknown Source)
... 24 more
Caused by: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:101)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:185)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1886)
at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1856)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:257)
... 27 more
Caused by: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:97)
... 32 more
Caused by: java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
... 37 more
SEVERE [org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper]: Cannot connect to device manager
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
Caused: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:97)
Caused: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:101)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:185)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1886)
at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1856)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:257)
Caused: java.io.IOException: Failed to retrieve RMIServer stub
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:338)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.connect(Unknown Source)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.start(Unknown Source)
Caused: java.lang.reflect.InvocationTargetException
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:597)
at com.sun.jme.toolkit.bootstrap.Batch.invoke(Unknown Source)
at com.sun.jme.toolkit.bootstrap.Batch.tryInvoke(Unknown Source)
at com.sun.jme.toolkit.bootstrap.Batch.startObjects(Unknown Source)
at org.netbeans.modules.javame.common.container.Module.start(Module.java:21)
at org.netbeans.modules.javame.common.container.ContainerSupport.startModule(ContainerSupport.java:67)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.getDeviceManagerConnection(DevicemanagerHelper.java:41)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.ensureConnected(DevicemanagerHelper.java:48)
[catch] at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.getDeviceManager(DevicemanagerHelper.java:84)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.ensureDMStarted(AutoInstaller.java:292)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.restored(AutoInstaller.java:63)
at org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:421)
at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:342)
at org.netbeans.ModuleManager.enable(ModuleManager.java:906)
at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:428)
at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:364)
at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:276)
at org.netbeans.core.startup.Main.getModuleSystem(Main.java:165)
at org.netbeans.core.startup.Main.start(Main.java:312)
at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:110)
at java.lang.Thread.run(Thread.java:662)
[ 23598] INFO - bootstrap.ObjectGraphProcessor - Consolidating dependencies...
[ 23698] INFO - bootstrap.ObjectGraphProcessor - Consolidated dependencies...
[ 23798] INFO - bootstrap.ObjectGraphProcessor - Calculating order...
[ 23898] INFO - bootstrap.ObjectGraphProcessor - Calculated order
[ 23998] INFO - un.jme.toolkit.bootstrap.Batch - Initializing objects...
[ 24098] INFO - un.jme.toolkit.bootstrap.Batch - Applying I18N
[ 24198] INFO - un.jme.toolkit.bootstrap.Batch - Initialized objects
[ 24298] INFO - un.jme.toolkit.bootstrap.Batch - Calling create() methods...
[ 24398] INFO - un.jme.toolkit.bootstrap.Batch - Calling start() methods...
[ 24498] INFO - un.jme.toolkit.bootstrap.Batch - Objects started
[ 24600] INFO - bootstrap.ObjectGraphProcessor - Consolidating dependencies...
[ 24700] INFO - bootstrap.ObjectGraphProcessor - Consolidated dependencies...
[ 24800] INFO - bootstrap.ObjectGraphProcessor - Calculating order...
[ 24900] INFO - bootstrap.ObjectGraphProcessor - Calculated order
[ 25000] INFO - un.jme.toolkit.bootstrap.Batch - Initializing objects...
[ 25100] INFO - un.jme.toolkit.bootstrap.Batch - Applying I18N
[ 25202] INFO - un.jme.toolkit.bootstrap.Batch - Initialized objects
[ 25302] INFO - un.jme.toolkit.bootstrap.Batch - Calling create() methods...
[ 25402] INFO - un.jme.toolkit.bootstrap.Batch - Calling start() methods...
[ 25502] INFO - un.jme.toolkit.bootstrap.Batch - Objects started
[ 25602] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 26699] WARN - mpl.ObjectServerConnectionImpl - Remote object server is not running at service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 26799] INFO - l.process.GenericProcessRunner - Starting process: C:\Program Files\Java\Java_ME_platform_SDK_3.0/bin/device-manager.exe
[ 27914] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 30005] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 32106] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 34206] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 36306] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 38406] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 40506] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 42607] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 44706] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
[ 46806] INFO - mpl.ObjectServerConnectionImpl - Connecting to service:jmx:rmi:///jndi/rmi://127.0.0.1:1999/device-manager
SEVERE [org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper]: Cannot connect to device manager
java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:529)
at java.net.Socket.connect(Socket.java:478)
at java.net.Socket.<init>(Socket.java:375)
at java.net.Socket.<init>(Socket.java:189)
at sun.rmi.transport.proxy.RMIDirectSocketFactory.createSocket(RMIDirectSocketFactory.java:22)
at sun.rmi.transport.proxy.RMIMasterSocketFactory.createSocket(RMIMasterSocketFactory.java:128)
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:595)
Caused: java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect
at sun.rmi.transport.tcp.TCPEndpoint.newSocket(TCPEndpoint.java:601)
at sun.rmi.transport.tcp.TCPChannel.createConnection(TCPChannel.java:198)
at sun.rmi.transport.tcp.TCPChannel.newConnection(TCPChannel.java:184)
at sun.rmi.server.UnicastRef.newCall(UnicastRef.java:322)
at sun.rmi.registry.RegistryImpl_Stub.lookup(Unknown Source)
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:97)
Caused: javax.naming.ServiceUnavailableException [Root exception is java.rmi.ConnectException: Connection refused to host: 127.0.0.1; nested exception is:
java.net.ConnectException: Connection refused: connect]
at com.sun.jndi.rmi.registry.RegistryContext.lookup(RegistryContext.java:101)
at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:185)
at javax.naming.InitialContext.lookup(InitialContext.java:392)
at javax.management.remote.rmi.RMIConnector.findRMIServerJNDI(RMIConnector.java:1886)
at javax.management.remote.rmi.RMIConnector.findRMIServer(RMIConnector.java:1856)
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:257)
Caused: java.io.IOException: Failed to retrieve RMIServer stub
at javax.management.remote.rmi.RMIConnector.connect(RMIConnector.java:338)
at javax.management.remote.JMXConnectorFactory.connect(JMXConnectorFactory.java:248)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.connect(Unknown Source)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.start(Unknown Source)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.lookupMBean(Unknown Source)
at com.sun.jme.toolkit.remoting.client.rmiimpl.ObjectServerConnectionImpl.findObject(Unknown Source)
[catch] at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.openConnection(DevicemanagerHelper.java:53)
at org.netbeans.modules.javame.common.container.devicemanager.DevicemanagerHelper.getDeviceManager(DevicemanagerHelper.java:86)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.ensureDMStarted(AutoInstaller.java:292)
at org.netbeans.modules.javame.platform.jme_sdk.autoinstaller.AutoInstaller.restored(AutoInstaller.java:63)
at org.netbeans.core.startup.NbInstaller.loadCode(NbInstaller.java:421)
at org.netbeans.core.startup.NbInstaller.load(NbInstaller.java:342)
at org.netbeans.ModuleManager.enable(ModuleManager.java:906)
at org.netbeans.core.startup.ModuleList.installNew(ModuleList.java:428)
at org.netbeans.core.startup.ModuleList.trigger(ModuleList.java:364)
at org.netbeans.core.startup.ModuleSystem.restore(ModuleSystem.java:276)
at org.netbeans.core.startup.Main.getModuleSystem(Main.java:165)
at org.netbeans.core.startup.Main.start(Main.java:312)
at org.netbeans.core.startup.TopThreadGroup.run(TopThreadGroup.java:110)
at java.lang.Thread.run(Thread.java:662)
[ 48018] INFO - bootstrap.ObjectGraphProcessor - Consolidating dependencies...
[ 48118] INFO - bootstrap.ObjectGraphProcessor - Consolidated dependencies...
[ 48218] INFO - bootstrap.ObjectGraphProcessor - Calculating order...
[ 48318] INFO - bootstrap.ObjectGraphProcessor - Calculated order
[ 48418] INFO - un.jme.toolkit.bootstrap.Batch - Initializing objects...
[ 48518] INFO - un.jme.toolkit.bootstrap.Batch - Applying I18N
[ 48618] INFO - un.jme.toolkit.bootstrap.Batch - Initialized objects
[ 48718] INFO - un.jme.toolkit.bootstrap.Batch - Calling create() methods...
[ 48818] INFO - un.jme.toolkit.bootstrap.Batch - Calling start() methods...
[ 48918] INFO - un.jme.toolkit.bootstrap.Batch - Objects started
[ 49018] INFO - bootstrap.ObjectGraphPI did install Nokia's SDK with NetBeans and this works perfectly.
I went through with everything recommended here: http://blogs.sun.com/javamesdk/entry/first_aid_when_emulator_doesn
But nothing worked.
Any help appreciated!
Thanks.Note: This thread was originally posted in the [Sun Java Wireless Toolkit|http://forums.sun.com/forum.jspa?forumID=82] forum, but moved to this forum for closer topic alignment.
-
# Question
Since updating to Firefox 3.6.15, I can no longer print coupons from SmartSource. The error message is that Java is not detected. The check box is longer showing in the Options/Content of this version of Firefox, so I can not enable it.Same PC as I used to post the question. When I go to the "plug in check" page, it shows I am up to date and it is not disabled.
Java(TM) Platform SE 6 U24
Next Generation Java Plug-in 1.6.0_24 for Mozilla browsers 1.6.0.24
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