Develop Reference

Running JavaFX 2 on Mac with Java 6?

I'm developing a Java Swing application using some features of JavaFX 2(such as WebBrowser).
I tried to reference the jfxrt.jar file from inside my folders, since it seems that a javaFX2 installer for MAC is not available (only installing Java 7).
But I would like to use JavaFX 2 also with Java 6.
I get this error:
Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: java.lang.NoSuchMethodError: getScaleFactor
at com.sun.javafx.tk.quantum.QuantumToolkit.startup(Unknown Source)
at com.sun.javafx.application.PlatformImpl.startup(Unknown Source)
at javafx.embed.swing.JFXPanel.initFx(Unknown Source)
at javafx.embed.swing.JFXPanel.<init>(Unknown Source)
at javabrowser.JpJavaBrowser.initComponentsFx(JpJavaBrowser.java:63)
at javabrowser.JpJavaBrowser.<init>(JpJavaBrowser.java:59)
at orderbook.FrOrderBook.initComponents(FrOrderBook.java:625)
at orderbook.FrOrderBook.<init>(FrOrderBook.java:179)
at orderbook.FrOrderBook$2.run(FrOrderBook.java:681)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:715)
at java.awt.EventQueue.access$400(EventQueue.java:82)
at java.awt.EventQueue$2.run(EventQueue.java:676)
at java.awt.EventQueue$2.run(EventQueue.java:674)
at java.security.AccessController.doPrivileged(Native Method)
...
Caused by: java.lang.NoSuchMethodError: getScaleFactor
at com.sun.glass.ui.mac.MacApplication._initIDs(Native Method)
at com.sun.glass.ui.mac.MacApplication.<clinit>(Unknown Source)
at com.sun.glass.ui.mac.MacPlatformFactory.createApplication(Unknown Source)
at com.sun.glass.ui.Application.Run(Unknown Source)
... 23 more
How can I fix this?

JavaFX 2 does not support Java6 on OS-X - Java6 is only supported on win32

Class not found exception while loading the applet(org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation)

I have a applet which usually uses jacorb.jar in endorsed directory under jre .Now I made a change in code to download jacorb.jar tp the windows temp folder (eg. C:\Users\ADMINI~1\AppData\Local\Temp\2\endorsed) .Using the jre installed in our local along with jars downloaded from the webpage we used to launch to the applet from different clients. But while launching the applet i receive the below error
org.omg.CORBA.INITIALIZE: can't instantiate default ORB implementation org.jacorb.orb.ORB vmcid: 0x0 minor code: 0 completed: No
at org.omg.CORBA.ORB.create_impl(Unknown Source)
at org.omg.CORBA.ORB.init(Unknown Source)
at com.nm.util.OrbUtils.initAppletORB(OrbUtils.java:2)
at com.nm.ani.share.aniclient.AniClient.initializeORB(AniClient.java:2)
at com.nm.ani.share.aniclient.AniClient.initializeCorba(AniClient.java:33)
at com.nm.ani.share.aniclient.AniClient.initialize(AniClient.java:19)
at com.nm.ani.share.aniclient.AniClient.<init>(AniClient.java:10)
at com.nm.ani.clients.lib.ui.windows.CampusApplet.createA(CampusApplet.java:66)
at com.nm.ani.clients.lib.ui.windows.CampusApplet.getA(CampusApplet.java:68)
at com.nm.ani.clients.campus.main.CampusMain.performAniLogin(CampusMain.java:30)
at com.nm.ani.clients.campus.main.CampusMain.initia(CampusMain.java:6)
at com.nm.ani.clients.lib.ui.windows.CampusApplet.init(CampusApplet.java:17)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.jacorb.orb.ORB
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass0(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source
Later i found that applet is searching for jacorb files in endorsed directory itself . It is not using the jar file in windows temp directory in which jars downloaded from the webpage newly.
I have changed every possible code to point to temp directory but it is not happening
please guide me on this...

Why do I get "A Java Exception has occurred" after I export my application to Jar?

Well, I exported my application into JAR with eclipse, but now whenever I try running it I get the: "A Java Exception has occurred". When I try to run it through command line it says:
C:\Users\Arturas>java -jar D:\Dropbox\EclipseWorkspace\Exports\Dantracio_skaiciu
oklis3.jar
Exception in thread "main" java.lang.NoClassDefFoundError: org/eclipse/swt/widge
ts/Composite
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
at java.lang.Class.getMethod0(Unknown Source)
at java.lang.Class.getMethod(Unknown Source)
at sun.launcher.LauncherHelper.getMainMethod(Unknown Source)
at sun.launcher.LauncherHelper.checkAndLoadMain(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.eclipse.swt.widgets.Composite
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 6 more
C:\Users\Arturas>
Any solutions to this? I just hate java for this... It never works on desktops when you want it to... sorry I'm really stressed out from this, I'm overreacting...
Any ideas what could cause this? I doesn't work on other computers as well. Right now it's using Java 1.7. And the application runs perfectly on Eclipse.

You need to get your dependencies. Looks like you are depending on swt, which is not part of the core java language. You'll need to get all the third party jars that you depend on and include them in your classpath. It runs perfectly on eclipse because eclipse takes care of setting up the classpath for you.
You can set the classpath in your manifest file as described in the documentation, or you could include a script to start your application that will use the -cp command when running the jar, or you can use something that will package everything into one monster jar like the solutions to this question.

UnsatisfiedLinkError on Websphere Application Server 6.1 Data Source

I am unable to start the installed App on my WAS instance. I believe the root cause is an UnsatisfiedLinkError which is shown as follows:
Caused by: java.lang.UnsatisfiedLinkError: no ocijdbc10 in java.library.path
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1682)
at java.lang.Runtime.loadLibrary0(Runtime.java:822)
at java.lang.System.loadLibrary(System.java:993)
at oracle.jdbc.driver.T2CConnection$1.run(T2CConnection.java:3147)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.jdbc.driver.T2CConnection.loadNativeLibrary(T2CConnection.java:3143)
at oracle.jdbc.driver.T2CConnection.logon(T2CConnection.java:221)
at oracle.jdbc.driver.PhysicalConnection.(PhysicalConnection.java:441)
at oracle.jdbc.driver.T2CConnection.(T2CConnection.java:132)
at oracle.jdbc.driver.T2CDriverExtension.getConnection(T2CDriverExtension.java:78)
at oracle.jdbc.driver.OracleDriver.connect(OracleDriver.java:801)
at oracle.jdbc.pool.OracleDataSource.getPhysicalConnection(OracleDataSource.java:297)
at oracle.jdbc.xa.client.OracleXADataSource.getPooledConnection(OracleXADataSource.java:515)
at oracle.jdbc.xa.client.OracleXADataSource.getXAConnection(OracleXADataSource.java:159)
at oracle.jdbc.xa.client.OracleXADataSource.getXAConnection(OracleXADataSource.java:133)
at com.ibm.ws.rsadapter.spi.InternalGenericDataStoreHelper$1.run(InternalGenericDataStoreHelper.java:935)
at com.ibm.ws.security.util.AccessController.doPrivileged(AccessController.java:118)
at com.ibm.ws.rsadapter.spi.InternalGenericDataStoreHelper.getPooledConnection(InternalGenericDataStoreHelper.java:972)
at com.ibm.ws.rsadapter.spi.WSRdbDataSource.getPooledConnection(WSRdbDataSource.java:1625)
at com.ibm.ws.rsadapter.spi.WSManagedConnectionFactoryImpl.createManagedConnection(WSManagedConnectionFactoryImpl.java:1220)
at com.ibm.ejs.j2c.FreePool.createManagedConnectionWithMCWrapper(FreePool.java:1988)
at com.ibm.ejs.j2c.FreePool.createOrWaitForConnection(FreePool.java:1660)
at com.ibm.ejs.j2c.PoolManager.reserve(PoolManager.java:2341)
at com.ibm.ejs.j2c.ConnectionManager.allocateMCWrapper(ConnectionManager.java:932)
at com.ibm.ejs.j2c.ConnectionManager.allocateConnection(ConnectionManager.java:608)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:449)
at com.ibm.ws.rsadapter.jdbc.WSJdbcDataSource.getConnection(WSJdbcDataSource.java:418)
at org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.newConnectionFromDataSource(Unknown Source)
at org.apache.ojb.broker.accesslayer.ConnectionFactoryAbstractImpl.lookupConnection(Unknown Source)
at org.apache.ojb.broker.accesslayer.ConnectionFactoryManagedImpl.lookupConnection(Unknown Source)
at org.apache.ojb.broker.accesslayer.ConnectionManagerImpl.getConnection(Unknown Source)
at org.apache.ojb.broker.accesslayer.StatementManager.getPreparedStatement(Unknown Source)
at org.apache.ojb.broker.accesslayer.JdbcAccessImpl.executeQuery(Unknown Source)
at org.apache.ojb.broker.accesslayer.RsQueryObject.performQuery(Unknown Source)
at org.apache.ojb.broker.accesslayer.RsIterator.(Unknown Source)
at org.apache.ojb.broker.core.RsIteratorFactoryImpl.createRsIterator(Unknown Source)
at org.apache.ojb.broker.core.PersistenceBrokerImpl.getRsIteratorFromQuery(Unknown Source)
at org.apache.ojb.broker.core.PersistenceBrokerImpl.getIteratorFromQuery(Unknown Source)
at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown Source)
at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown Source)
at org.apache.ojb.broker.core.QueryReferenceBroker.getCollectionByQuery(Unknown Source)
at org.apache.ojb.broker.core.PersistenceBrokerImpl.getCollectionByQuery(Unknown Source)
at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(Unknown Source)
at org.apache.ojb.broker.core.DelegatingPersistenceBroker.getCollectionByQuery(Unknown Source)
at com.ascential.xmeta.persistence.orm.impl.ojb.OjbPersistentEObjectPersistenceRegistry.loadPackageCache(OjbPersistentEObjectPersistenceRegistry.java:371)
... 115 more
My LD_LIBRARY_PATH variable for the 'was' user is /opt/oracle/product/10.2.0/lib
What else should I be checking to fix this error?
Please help.
Thanks

Verify that "Java Library Path" in the trace header of SystemOut.log contains "/opt/oracle/product/10.2.0/lib". If it does not contain the path, then your LD_LIBRARY_PATH setting is not taking effect (perhaps the variable isn't exported, or perhaps you're executing startServer as a different user).
Regardless, I would recommend setting adding "/opt/oracle/product/10.2.0/lib" to the native library path of the JDBC provider rather than trying to set it at the OS level.
Finally, double-check that the server has the proper OS permissions to access the native library.

Java Applet failure

I am running a Java web applet on one of my servers. For some reason a particular user cannot access it (an error text appears in place of the applet that reads "Error. Click for details"; it is not text I placed between the tags, i.e., his JRE is installed and appears to at the very least be installed correctly but for some reason it is not working on my applet.
I think it has something to do with his particular "flavor" of JRE - this so-called "HotSpot" version. (see this: http://www.experts-exchange.com/Programming/Languages/Java/Q_24405442.html if you have an EE account, I can't remember mine offhand). I am not too familiar with Java itself or it's varieties - I am merely the implementer of the applet in the page (I did not write it).
The applet works fine for me, and every single other user to date. Also, it should not be referring to file as listed below in his error such as "http://mywebsite.com/java/JavaVersionDisplayApplet/class.class". The file is located at "http://mywebsite.com/java/JavaVersionDisplay.class". According to the applet programmer, his error points to a file that is not even specified anywhere in his code.
The users' error reads:
Java Plug-in 1.6.0_13
Using JRE version 1.6.0_13 Java HotSpot(TM) Client VM
User home directory = C:Documents and Settingsjohn
load: class JavaVersionDisplayApplet.class not found.
java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://mywebsite.com/java/JavaVersionDisplayApplet/class.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Exception: java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class
load: class JavaVersionDisplayApplet.class not found.
java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class
at sun.plugin2.applet.Applet2ClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.plugin2.applet.Plugin2ClassLoader.loadCode(Unknown Source)
at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.IOException: open HTTP connection failed:http://mywebsite.com/java/JavaVersionDisplayApplet/class.class
at sun.plugin2.applet.Applet2ClassLoader.getBytes(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader.access$000(Unknown Source)
at sun.plugin2.applet.Applet2ClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
... 7 more
Exception: java.lang.ClassNotFoundException: JavaVersionDisplayApplet.class

I'd start by packaging the application as a jarfile instead of as a set of classfiles. It seems like JavaVersionDisplayApplet.class is being interpreted as a fully-qualified class name...that is, the JVM thinks "JavaVersionDisplayApplet" is a package name and "class" is the class name.
Can you post the contents of the APPLET tag that you're using in the HTML?

A couple of things you might want to look at:
Is he using Chrome? It seems that Chrome and Java don't play well together quite yet.
Is he using a Proxy server? The "connection failed" error may indicate that he is using a Proxy that is allowing the browser through, but not the JRE.

This is the culprit:
Caused by: java.io.IOException: open HTTP connection failed:http://mywebsite.com/java/JavaVersionDisplayApplet/class.class
The JVM is started, but it cannot connect to the server hosting the applet. Does the user connect to mywebsite.com or another name?