I'd like to read different kinds of objects from file to an ArrayList, all of them are instances of class which extend the class Advertisement. I'm trying with this code:
ArrayList <Advertisement> ads = new ArrayList<Advertisement>();
ObjectInput input2 = new ObjectInputStream(
new BufferedInputStream(new FileInputStream("ads.ser")));
//break from this method at this point
ads = (ArrayList<Advertisement>) input2.readObject();
The problem is at the 3rd line/last line. It doesn't read the objects in variable ads of type ArrayList<Advertisement>, furthermore, it breaks from this method, without any messages.
Edit: Removed the try-catch block, I should have done it earlier, but I still don't know the solution. Stacktrace:
java.io.InvalidClassException: Kiado; local class incompatible: stream classdesc serialVersionUID = -1393576200767336208, local class serialVersionUID = -841663850423605586
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at java.util.ArrayList.readObject(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at java.io.ObjectStreamClass.invokeReadObject(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at Main.beolvasas(Main.java:30)
at Main.startup(Main.java:57)
at Main.main(Main.java:633)
Now that you have a stack trace, the problem is clear: since the moment you serialized the objects to the file, you have made changes to the class Kiado. So the class you have now is not compatible anymore with the class as it was when serializing the objects to the file.
If you didn't change the number and the names of the fields of the class (and of all its superclasses), you can make it compatible again by just adding the following variable declaration in the class:
private static final long serialVersionUID = -1393576200767336208;
If you added, removed or renamed at least one (non-transient) field, then you might make the new class still compatible with the old one, but with more pain. And we would have to know the nature of the changes to help you.
I would personally avoid using native serialization for long-term storage because, as you just noticed, it's fragile and makes it hard to change the model. I would use a more easily readable and migratable file format: XML or JSON for example.
Do you have any code like:
catch(<WheteverException> e)
{
// nothing here
}
If so do the following:
change the // nothing here to e.printStackTrace();
remove the try/catch and only add it back if the compiler tells you to, and then only add back what exception that the compiler tells you to add (for instance don't do catch(Exception e).
Related
There are two types of agents in my Model:
AgentA - it's a parcel which must be delivered to the DeliveryPoint. This AgentA has a corresponding parameter "DeliveryPoint".
AgentB - it's a package (an agent-container) containing parcels (AgentA). This AgentB has a parameter "DeliveryPoint" too that depends on the "DeliveryPoint" of the parcel (AgentA) delivering at the moment.
I need to count agents AgentA in the agent-container AgentB which meet the given condition:
AgentA.DeliveryPoint == AgentB.DeliveryPoint
I tried this expression:
count(agentB.contents(), p -> ((AgentA)agentB.contents()).DeliveryPoint == agentB.DeliveryPoint))
Code example:
private void _movingToDeliveryPoint_onExit_xjal( final com.anylogic.libraries.processmodeling.Delay<AgentB> self, AgentB agent ) {
traceln(count(agent.contents(), p -> ((AgentA)agent.contents()).DeliveryPoint == agent.DeliveryPoint));
}
but when I run my Model, I recieve this error in the block "Delay" ("movingToDeliveryPoint") that executes this code:
java.base/java.util.Collections$UnmodifiableList cannot be cast to smm_chain.AgentA
java.lang.ClassCastException: java.base/java.util.Collections$UnmodifiableList cannot be cast to smm_chain.AgentA
at smm_chain.sc.lambda$0(sc.java:5168)
at com.anylogic.engine.UtilitiesCollection.count(Unknown Source)
at smm_chain.sc._movingToDeliveryPoint_onExit_xjal(sc.java:5168)
at smm_chain.sc.access$25(sc.java:5163)
at smm_chain.sc$17.onExit(sc.java:2319)
at smm_chain.sc$17.onExit(sc.java:1)
at com.anylogic.libraries.processmodeling.Delay.b(Unknown Source)
at com.anylogic.libraries.processmodeling.Delay.b(Unknown Source)
at com.anylogic.libraries.processmodeling.Delay$6.onExit(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBuffer.c(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBuffer.c(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBuffer$1.onExit(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock.c(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock$1.b(Unknown Source)
at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
at com.anylogic.libraries.processmodeling.InPort.receiveImmediately(Unknown Source)
at com.anylogic.libraries.processmodeling.InputBlock$1.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutPort.b(Unknown Source)
at com.anylogic.libraries.processmodeling.OutPort.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock$2.a(Unknown Source)
at com.anylogic.libraries.processmodeling.OutputBlock$2.action(Unknown Source)
at com.anylogic.libraries.processmodeling.AsynchronousExecutor_xjal.executeActionOf(Unknown Source)
at com.anylogic.engine.EventTimeout.execute(Unknown Source)
at com.anylogic.engine.Engine.b(Unknown Source)
at com.anylogic.engine.Engine.nb(Unknown Source)
at com.anylogic.engine.Engine.k(Unknown Source)
at com.anylogic.engine.Engine$a.run(Unknown Source)
Could you help me?
Thanks a lot!
You cannot use agentB.contents(). Although it looks like a good method, it is not supposed to be used by modellers.
Also, do not compare objects using ==. Use the equals() method instead.
Do this, assuming you have a population or list named myAgentsA of AgentA within AgentB:
count(myAgentsA, a->a.DeliveryPoint.equals(DeliveryPoint))
This assumes you call the code from within AgentB
I have read through all the threads out there that looked as if they could solve my problem and I've also read all the answers on here, but I'm still at my wit's end. I'm not sure why the exception is thrown, although I have a feeling this might be to do with threading. If it does, please let me know where to include the new Runnable()and whether to invokeLater() or invokeAndWait(), as I have tried it to no avail.
Please bear with me while I give you the code that leads to the exception + the stacktrace (below).
EDIT: I had included a number of sysos in the AnnoTable section just before tableChanged is called and they don't show up in the console, hence I think the problem must occur even before the application gets to that point, i.e. either when it's called from AAView or when data and table model are instantiated...
EDIT II: The problem was the overwritten tableChanged method. That would obviously fire an Exception. I've removed the tableChanged() call (which wouldn't make a difference) as well. Now I've got another problem: understanding how a change in the underlying data (AnnoData) can automatically update the table. Although this is perhaps for another query (after an extended Google search), please feel free to post helpful comments in this thread, as I'll continue reading it... THANKS A LOT for all the helpful comments and tips!
EDIT III:* I've solved the problem. I needed to instantiate another object from AnnoData, pass that to a new instance of AnnoTableModel, set this instance to my table and THEN fireTableDataChanged().
EDIT IV: Okay, so fireTableDataChanged() (as used in EDIT III) is unnecessary after all. I still would want to use it rather than creating new objects all the time. I guess I should ask a new question... Thanks!
This method in AAView should create an object extending a JTable, put it into a JScrollPane, etc. (the latter does work).
private JPanel createAnnoTablePanel() {
annoTablePanel = new JPanel();
annoTable = new AnnoTable(aameth);
setAnnoTable(annoTable);
JScrollPane scrollPane = new JScrollPane(getAnnoTable());
annoTablePanel.add(scrollPane);
return annoTablePanel;
}
Here is the class AnnoTable (aameth is an instance object containing business logic to access a data model, works fine).
public class AnnoTable extends JTable implements TableModelListener
{
public AnnoTable(AAMethods aameth)
{
int tokenCount = aameth.getTokenCount();
AnnoData annoData = new AnnoData(aameth); // cf. below, AnnoData is a Vector(Vector<Object>,String[])
TableModel tableModel = new AnnoTableModel(annoData.getAnnoData(),
// AnnoTableModel extends AbstractTableModel(Vector, String[])
annoData.getColTitles());
setModel(tableModel);
getModel().addTableModelListener(this);
TableModelEvent tme = new TableModelEvent(tableModel);
this.tableChanged(tme);
setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
setCellSelectionEnabled(true);
getColumnModel().getSelectionModel().addListSelectionListener(new AnnoTableSelectionListener(this));
setPreferredScrollableViewportSize(this.getPreferredSize());
}
public void tableChanged(TableModelEvent e) {
int row = e.getFirstRow();
int column = e.getColumn();
AbstractTableModel model = (AbstractTableModel)e.getSource();
String columnName = model.getColumnName(column);
Object data = model.getValueAt(row, column); // This is where the exception is thrown!
}
}
If you need the source code for AnnoTableModel() (which is a fairly generic extension of AbstractTableModel) or AnnoData (which constructs a Vector containing three Vector<Object> and a String[] for column titles), please let me know.
Here's the stacktrace.
Exception in thread "AWT-EventQueue-0" java.lang.ArrayIndexOutOfBoundsException: -1
at java.util.Vector.elementAt(Unknown Source)
at javax.swing.table.DefaultTableModel.getValueAt(Unknown Source)
at package.AnnoTable.tableChanged(AnnoTable.java:52)
at javax.swing.JTable.setModel(Unknown Source)
at javax.swing.JTable.<init>(Unknown Source)
at javax.swing.JTable.<init>(Unknown Source)
at package.AnnoTable.<init>(AnnoTable.java:25)
at package.AAView.createAnnoTablePanel(AAView.java:464)
at package.AAView.createNorthPanel(AAView.java:455)
at package.AAView.displayAndAnnotate(AAView.java:444)
at package.AAView.loadProject(AAView.java:333)
at package.AAView.actionPerformed(AAView.java:286)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.AbstractButton.doClick(Unknown Source)
at javax.swing.plaf.basic.BasicMenuItemUI$Actions.actionPerformed(Unknown Source)
at javax.swing.SwingUtilities.notifyAction(Unknown Source)
at javax.swing.JComponent.processKeyBinding(Unknown Source)
at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
at javax.swing.JMenuBar.processBindingForKeyStrokeRecursive(Unknown Source)
at javax.swing.JMenuBar.processKeyBinding(Unknown Source)
at javax.swing.KeyboardManager.fireBinding(Unknown Source)
at javax.swing.KeyboardManager.fireKeyboardAction(Unknown Source)
at javax.swing.JComponent.processKeyBindingsForAllComponents(Unknown Source)
at javax.swing.JComponent.processKeyBindings(Unknown Source)
at javax.swing.JComponent.processKeyEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.KeyboardFocusManager.redispatchEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(Unknown Source)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$000(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.awt.EventQueue$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.awt.EventQueue$2.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
I can see the EDT in there so from what I've learned this might really be a problem of threading. However, I don't know how to find out where I should start a new Thread (or invoke a new Runnable().
On a side note, the Exception only started appearing when I changed AnnoTable to extend JTable rather than JPanel. Originally I had AnnoTable not only construct the table but also wrap it in a scroll pane and add this to a new JPanel. But because I wanted to fireTableDataChanged from a Class that only knew of AAView (which also features a setAnnoTable() method) I wanted to do it the correct way, whereas before it worked just fine. Murphy's law?
A rowIndex of -1 (==TableModelEvent.HEADER_ROW) indicates that the model's structure has changed completely. Such an event is fired internally by the JTable on setModel. Read the api doc of TableModelEvent to fully understand which types/values to expect in the listener's tableChanged.
BTW, #AKJ is right - no need to fire any TableModelEvents in your table code. Make the model fire the events as appropriate
This means that you are passing -1 as row or column. This is not permitted - make sure you pass a correct value.
I have a feeling that your problem is here:
TableModelEvent tme = new TableModelEvent(tableModel);
this.tableChanged(tme);
->
int column = e.getColumn();
AbstractTableModel model = (AbstractTableModel)e.getSource();
String columnName = model.getColumnName(column);
Because you haven't specified a row or column value, the getColumn() and getRow() calls will return -1, which you are then passing to getValueAt().
Try looking at the constructor for TableModelEvent. It has options for specifying those row/column values.
TableModelEvent tme = new TableModelEvent(tableModel);
this.tableChanged(tme);
I don't see any need of this call. As pointed by other posters this is the cause of your problem.
If you are implementing the table model correctly, whenever you update the table model the jtable will automatically get notifications and you don't need to write the tableChanged() method as well. So I am lost why you need to call tableChanged() explicitly.
Whenever you want to update the table just update the model. Also at first glance there does not seem to be any threading issue involved.
Your AnnoTable constructor is leaking references to the incompletely constructed "this" object. Also, registering Listeners from the constructor is not safe. enter link description here
Build your objects doing the least amount of work possible in the constructor and then operate on the fully built objects. Add listeners, adjust the models, fireEvents etc...
I am using SSA parser library in my project. When I invoke main method of one of it's class using command prompt it works fine on my machine.
I execute following command from command prompt :
java -Xmx800M -cp %1 edu.stanford.nlp.parser.lexparser.LexicalizedParser -retainTMPSubcategories -outputFormat "penn,typedDependenciesCollapsed" englishPCFG.ser.gz %2
But when I tried to use the same class in my java program, I am getting Caused by: java.io.InvalidClassException: edu.stanford.nlp.stats.Counter; edu.stanford.nlp.stats.Counter; class invalid for deserialization exception.
Following line throws error :
LexicalizedParser _parser = new LexicalizedParser("C:\englishPCFG.ser.gz");
This englishPCFG.ser.gz file contains some classes or information which gets loaded when creating object of type LexicalizedParser.
Following is the stacktrace :
Loading parser from serialized file C:\englishPCFG.ser.gz ...
Exception in thread "main" java.lang.RuntimeException: Invalid class in file: C:\englishPCFG.ser.gz
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserDataFromSerializedFile(LexicalizedParser.java:822)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserDataFromFile(LexicalizedParser.java:603)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.<init>(LexicalizedParser.java:168)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.<init>(LexicalizedParser.java:154)
at com.tcs.srl.ssa.SSAInvoker.<init>(SSAInvoker.java:21)
at com.tcs.srl.ssa.SSAInvoker.main(SSAInvoker.java:53)
Caused by: java.io.InvalidClassException: edu.stanford.nlp.stats.Counter; edu.stanford.nlp.stats.Counter; class invalid for deserialization
at java.io.ObjectStreamClass.checkDeserialize(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.defaultReadFields(Unknown Source)
at java.io.ObjectInputStream.readSerialData(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at edu.stanford.nlp.parser.lexparser.LexicalizedParser.getParserDataFromSerializedFile(LexicalizedParser.java:814)
... 5 more
Caused by: java.io.InvalidClassException: edu.stanford.nlp.stats.Counter; class invalid for deserialization
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
... 17 more
I am new to Java world so I dont to why this error is coming and what should I do to avoid it.
I googled for this error then I found out that this error comes because of some version mismatch which I think is something similar to dll hell of windows API. Am I correct?
Anyone knows why this kind of error comes? and what should we do to avoid it?
Please enlighten !!!
It could be because the serialVersionUID of the classe has changed, and you are trying to read an object that was written with another version of the class.
You can force the version number by déclaring a serialVersionUID in your serializable class:
private static final long serialVersionUID = 1L;
The java word for dll hell is classpath hell ;-) But that's not your hell anyway.
Object serialization is a process of persisting java objects to files (or streams). The output format is binary. Deserialization (iaw: making java objects from serialized data) requires the same versions of the classes.
So it is possible, that you simply use an older or newer version of that Counter class. This input file should be shipped with a documentation that clearly says, which version of the parser is required. I'd investigate in that direction first.
OT: For the sake of completeness I ran into InvalidClassException ... class invalid for deserialization (and this question) when solving another problem.
(Since edu.stanford.nlp.stats.Counter is not anonymous, the case in this question is certainly not the same case as mine.)
I was sending a serialized class from server to client, the class had two anonymous classes. The jar with these classes was shared among server and client but for server it was compiled in Eclipse JDT, for client in javac. Compilers generated different ordering of names $1, $2 for anonymous classes, hence instance of $1 was sent by server but could not be received as $1 at client side. More info in blogpost (in Czech, though example is obvious).
Try using serialVer to generate the serialID of your old classes that you're trying to de-serialize and add it explicitly (private static final long serialVersionUID = (insert number from serialVer here)L;) in the new versions of the class. If you change anything in a class serialized and you haven't setted the serialID, java thinks the class you've serialized isn't compatible with the new one.
This error suggests that the serialized objects within C:\englishPCFG.ser.gz were serialized with using a older or newer definition of the class which unfortunately is different in such a way that it breaks the terms of compatible serialization from one version to another.
Please see http://download.oracle.com/javase/1.4.2/docs/api/java/io/InvalidClassException.html
Can you check to see when this file was produced and then if possible locate the version of the SSAParser library at the time of it's creation?
i am learning JAXb 2.0 and is new to it.
i am trying to generate XSD based on y POJO classes using schemagen and for simple classes it working fine but when my class contains refrence to other classes
schemagen is giving me error below is the error trace for the same
Problem encountered during annotation processing;
see stacktrace below for more information.
java.lang.NullPointerException
at com.sun.tools.jxc.model.nav.APTNavigator$2.onDeclaredType(APTNavigator.java:436)
at com.sun.tools.jxc.model.nav.APTNavigator$2.onClassType(APTNavigator.java:410)
at com.sun.tools.jxc.model.nav.APTNavigator$2.onClassType(APTNavigator.java:464)
at com.sun.istack.tools.APTTypeVisitor.apply(APTTypeVisitor.java:27)
at com.sun.tools.jxc.model.nav.APTNavigator.getBaseClass(APTNavigator.java:113)
at com.sun.tools.jxc.model.nav.APTNavigator.getBaseClass(APTNavigator.java:89)
at com.sun.xml.bind.v2.model.impl.PropertyInfoImpl.getIndividualType(PropertyInfoImpl.java:195)
at com.sun.xml.bind.v2.model.impl.PropertyInfoImpl.<init>(PropertyInfoImpl.java:137)
at com.sun.xml.bind.v2.model.impl.MapPropertyInfoImpl.<init>(MapPropertyInfoImpl.java:71)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.createMapProperty(ClassInfoImpl.java:928)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.addProperty(ClassInfoImpl.java:885)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.findGetterSetterProperties(ClassInfoImpl.java:1004)
at com.sun.xml.bind.v2.model.impl.ClassInfoImpl.getProperties(ClassInfoImpl.java:314)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:247)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getClassInfo(ModelBuilder.java:213)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:319)
at com.sun.xml.bind.v2.model.impl.ModelBuilder.getTypeInfo(ModelBuilder.java:334)
at com.sun.tools.xjc.api.impl.j2s.JavaCompilerImpl.bind(JavaCompilerImpl.java:94)
at com.sun.tools.jxc.apt.SchemaGenerator$1.process(SchemaGenerator.java:119)
at com.sun.mirror.apt.AnnotationProcessors$CompositeAnnotationProcessor.process(AnnotationProcessors.java:60)
at com.sun.tools.apt.comp.Apt.main(Apt.java:454)
at com.sun.tools.apt.main.JavaCompiler.compile(JavaCompiler.java:258)
at com.sun.tools.apt.main.Main.compile(Main.java:1102)
at com.sun.tools.apt.main.Main.compile(Main.java:964)
at com.sun.tools.apt.Main.processing(Main.java:95)
at com.sun.tools.apt.Main.process(Main.java:85)
at com.sun.tools.apt.Main.process(Main.java:67)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.tools.jxc.SchemaGenerator$Runner.main(SchemaGenerator.java:245)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.tools.jxc.SchemaGenerator.run(SchemaGenerator.java:177)
at com.sun.tools.jxc.SchemaGenerator.run(SchemaGenerator.java:81)
at com.sun.tools.jxc.SchemaGenerator.main(SchemaGenerator.java:73)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.sun.tools.jxc.SchemaGeneratorFacade.main(SchemaGeneratorFacade.java:60)
C:\Users\Desktop\jaxb\jaxb-ri-20101119\bin\src\com\tr\model\destination\Destination.java:9: package com.tr.model.address does not exist
import com.tr.model.address.BasicAddress;[code]
below is the detail of my folder structure
schemagen is located at the following location
C:\Users\Desktop\jaxb\jaxb-ri-20101119\bin
My Java class based on which i am trying to generate xsd is at the following location
C:\Users\Desktop\jaxb\jaxb-ri-20101119\bin\src\com\tr\model\destination
Destination.java
while all other classes being refrenced from Destination as well as the class itself are inside the following structure
C:\Users\Raisonne\Desktop\jaxb\jaxb-ri-20101119\bin\src\com\raisonne\tr\model
i know the problem is with the setting of classpath but i am unable to figure it out ho to set correct classpath for this case
i tried to set system's CLASSPATH variable to the value of
C:\Users\Raisonne\Desktop\jaxb\jaxb-ri-20101119\bin\src\com\raisonne\tr\model as well other 2 mentioned in my post but nothing worked out.
can any one help me in setting classpath for the schemagen.
thanks in advance
Umesh
it seems you have set package declaration of your class to
com.tr.model.address
where it should be from your dir structure
com.tr.model.destination
I'm presently refactoring a JTable which displays a multitude of different types of data. The primary reason for this refactoring is that there a few ClassCastExceptions (the author/friend who wrote the code is off on hiatus), and I can't seem to find where these are originating from. Due to the large codebase, I'm at a loss as to where to start. Does anyone have any suggestions? I realize and apologize for the ambiguity of this question!
I've included the stack trace below. Thanks!!
Exception in thread "AWT-EventQueue-0" java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
at javax.swing.JTable$BooleanRenderer.getTableCellRendererComponent(Unknown Source)
at javax.swing.JTable.prepareRenderer(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paintCell(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paintCells(Unknown Source)
at javax.swing.plaf.basic.BasicTableUI.paint(Unknown Source)
at javax.swing.plaf.ComponentUI.update(Unknown Source)
at javax.swing.JComponent.paintComponent(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent._paintImmediately(Unknown Source)
at javax.swing.JComponent.paintImmediately(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.seqPaintDirtyRegions(Unknown Source)
at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
This error which is occurring in BooleanRenderer is because it is expecting that the value that is from the table's model is of type Boolean and tries to cast to it (akf's answer has the exact line of code where it occurs).
My guess is that initially it was expected that the model would return Boolean values for the given column but at one point it is returning strings instead.
Therefore, I would concentrate on what model is being used for this given table (is it a custom model? Is it the default model where it is adding values to it?) and see where it may be getting a String instead of a Boolean.
Probably the table contains a checkbox (when the column model states that the column contains type Boolean) and the renderer tries to convert the contents into a boolean. But probably the contents are just strings. The solution is to change the data in the table or to create your own renderer.
I think the problem comes from your TableModel (jtable.getModel())
It said somewhere
(..)
public Class<?> getColumnClass(int column)
{
switch(column)
{
(...)
case XX: return Boolean.class;
}
}
but the value in your model in this column is a String
public Object getValueAt(int row,int column)
{
(..)
switch(column)
{
(...)
case XX: return (a String);
}
}
To debug this problem, you may want to consider biting the bullet and putting a breakpoint in the JTable$BooleanRenderer.getTableCellRendererComponent() on the line that makes the cast
setSelected((value != null && ((Boolean)value).booleanValue()));
(from JTable.java 1.288 06/11/15)
and check the class type of value. when you find a String, you can identify the offending column and row from your model. That will at least give you a start on identifying the problem.
Sorry to dig up an old question, but I ran into this issue myself & this post came up in a search and this is what I ran into.
I had JUnits tests fail (and actually throwing runtime exceptions) but I continued to run add/removes on my JTable (in the JUnit test) which put the GUI application in a bad state, and I would see the ClassCastException come up exactly as Chris had described.
So the "fix" for me was to make sure that all unit tests catch their exceptions and return failure instead of proceeding to run more unit tests.
I had the same problem, and the cause was exactly as Avrom specified. In my case, I had the getValueAt implemented as:
#Override
synchronized public Object getValueAt(int row, int col) {
if (row < m_rows.size()) {
return m_rows.get(row).getValueAt(col);
}
else
{
return ""; // THIS IS THE BUG
}
}
The problem here is that, is a row does not exist, a String is returned, for every column. However some of my columns has the class type, Boolean, and hence the exception:
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Boolean
at javax.swing.JTable$BooleanRenderer.getTableCellRendererComponent(JTable.java:5409)
at javax.swing.JTable.prepareRenderer(JTable.java:5736)
The solution was simply to change the return value to:
return null;