Why cannot I serialize JTable if the data of table is modified by user?











up vote
0
down vote

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I have a class CustomTable with 2 blank rows and columns.



class CustomTable extends JTable{

      CustomTable(){

           super(2,2);

      }

}


I have a save button that serializes CustomTable...



saveButton.addActionListener(new ActionListener() {



    @Override

    public void actionPerformed(ActionEvent arg0) { 

        try{

             FileOutputStream file = new FileOutputStream("file.ser"); 

             ObjectOutputStream out = new ObjectOutputStream(file); 



                tab  = new CustomTable();

                out.writeObject(tab);

                out.close(); 

                file.close();

            }



            catch(IOException ex) 

            { 

                    ex.printStackTrace();

            } 

        }

    });


When I click save button without editing the cells, serialization, and deserialization works properly. (Also with data entered during initializing CustomTable).



But when I edit data of the cells during runtime and press save, it shows NotSerializableException.
I am not getting where I am doing it wrong.



EDIT 1:



I have tried extending DefaultTableModel instead of JTable (obviously changing the above code a bit), but everything works well only till i dont edit cells during runtime.




How do i serialize it(JTable / DefaultTableModel) after the user has entered data into cells?



Here is the exception :



java.io.NotSerializableException: java.lang.reflect.Constructor

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JComponent.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeArray(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.access$300(Unknown Source)

at java.base/java.io.ObjectOutputStream$PutFieldImpl.writeFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeFields(Unknown Source)

at java.desktop/java.awt.Container.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JTable.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at com.kdhitesh.layout.LayoutManager$1.actionPerformed(LayoutManager.java:57)

at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)

at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)

at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)

at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)

at java.desktop/java.awt.Component.processEvent(Unknown Source)

at java.desktop/java.awt.Container.processEvent(Unknown Source)

at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.EventQueue.access$600(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)





java serialization







share|improve this question
























  • IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
    – Zoe
    Nov 11 at 12:12










  • When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
    – JB Nizet
    Nov 11 at 12:17










  • @JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
    – DHS
    Nov 11 at 12:26










  • XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
    – JB Nizet
    Nov 11 at 12:29










  • @JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
    – DHS
    Nov 11 at 12:37















up vote
0
down vote

favorite












I have a class CustomTable with 2 blank rows and columns.



class CustomTable extends JTable{

      CustomTable(){

           super(2,2);

      }

}


I have a save button that serializes CustomTable...



saveButton.addActionListener(new ActionListener() {



    @Override

    public void actionPerformed(ActionEvent arg0) { 

        try{

             FileOutputStream file = new FileOutputStream("file.ser"); 

             ObjectOutputStream out = new ObjectOutputStream(file); 



                tab  = new CustomTable();

                out.writeObject(tab);

                out.close(); 

                file.close();

            }



            catch(IOException ex) 

            { 

                    ex.printStackTrace();

            } 

        }

    });


When I click save button without editing the cells, serialization, and deserialization works properly. (Also with data entered during initializing CustomTable).



But when I edit data of the cells during runtime and press save, it shows NotSerializableException.
I am not getting where I am doing it wrong.



EDIT 1:



I have tried extending DefaultTableModel instead of JTable (obviously changing the above code a bit), but everything works well only till i dont edit cells during runtime.




How do i serialize it(JTable / DefaultTableModel) after the user has entered data into cells?



Here is the exception :



java.io.NotSerializableException: java.lang.reflect.Constructor

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JComponent.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeArray(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.access$300(Unknown Source)

at java.base/java.io.ObjectOutputStream$PutFieldImpl.writeFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeFields(Unknown Source)

at java.desktop/java.awt.Container.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JTable.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at com.kdhitesh.layout.LayoutManager$1.actionPerformed(LayoutManager.java:57)

at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)

at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)

at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)

at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)

at java.desktop/java.awt.Component.processEvent(Unknown Source)

at java.desktop/java.awt.Container.processEvent(Unknown Source)

at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.EventQueue.access$600(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)





java serialization







share|improve this question
























  • IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
    – Zoe
    Nov 11 at 12:12










  • When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
    – JB Nizet
    Nov 11 at 12:17










  • @JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
    – DHS
    Nov 11 at 12:26










  • XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
    – JB Nizet
    Nov 11 at 12:29










  • @JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
    – DHS
    Nov 11 at 12:37













up vote
0
down vote

favorite









up vote
0
down vote

favorite











I have a class CustomTable with 2 blank rows and columns.



class CustomTable extends JTable{

      CustomTable(){

           super(2,2);

      }

}


I have a save button that serializes CustomTable...



saveButton.addActionListener(new ActionListener() {



    @Override

    public void actionPerformed(ActionEvent arg0) { 

        try{

             FileOutputStream file = new FileOutputStream("file.ser"); 

             ObjectOutputStream out = new ObjectOutputStream(file); 



                tab  = new CustomTable();

                out.writeObject(tab);

                out.close(); 

                file.close();

            }



            catch(IOException ex) 

            { 

                    ex.printStackTrace();

            } 

        }

    });


When I click save button without editing the cells, serialization, and deserialization works properly. (Also with data entered during initializing CustomTable).



But when I edit data of the cells during runtime and press save, it shows NotSerializableException.
I am not getting where I am doing it wrong.



EDIT 1:



I have tried extending DefaultTableModel instead of JTable (obviously changing the above code a bit), but everything works well only till i dont edit cells during runtime.




How do i serialize it(JTable / DefaultTableModel) after the user has entered data into cells?



Here is the exception :



java.io.NotSerializableException: java.lang.reflect.Constructor

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JComponent.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeArray(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.access$300(Unknown Source)

at java.base/java.io.ObjectOutputStream$PutFieldImpl.writeFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeFields(Unknown Source)

at java.desktop/java.awt.Container.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JTable.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at com.kdhitesh.layout.LayoutManager$1.actionPerformed(LayoutManager.java:57)

at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)

at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)

at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)

at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)

at java.desktop/java.awt.Component.processEvent(Unknown Source)

at java.desktop/java.awt.Container.processEvent(Unknown Source)

at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.EventQueue.access$600(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)





java serialization







share|improve this question















I have a class CustomTable with 2 blank rows and columns.



class CustomTable extends JTable{

      CustomTable(){

           super(2,2);

      }

}


I have a save button that serializes CustomTable...



saveButton.addActionListener(new ActionListener() {



    @Override

    public void actionPerformed(ActionEvent arg0) { 

        try{

             FileOutputStream file = new FileOutputStream("file.ser"); 

             ObjectOutputStream out = new ObjectOutputStream(file); 



                tab  = new CustomTable();

                out.writeObject(tab);

                out.close(); 

                file.close();

            }



            catch(IOException ex) 

            { 

                    ex.printStackTrace();

            } 

        }

    });


When I click save button without editing the cells, serialization, and deserialization works properly. (Also with data entered during initializing CustomTable).



But when I edit data of the cells during runtime and press save, it shows NotSerializableException.
I am not getting where I am doing it wrong.



EDIT 1:



I have tried extending DefaultTableModel instead of JTable (obviously changing the above code a bit), but everything works well only till i dont edit cells during runtime.




How do i serialize it(JTable / DefaultTableModel) after the user has entered data into cells?



Here is the exception :



java.io.NotSerializableException: java.lang.reflect.Constructor

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JComponent.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeArray(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.access$300(Unknown Source)

at java.base/java.io.ObjectOutputStream$PutFieldImpl.writeFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeFields(Unknown Source)

at java.desktop/java.awt.Container.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at java.desktop/javax.swing.event.EventListenerList.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteFields(Unknown Source)

at java.base/java.io.ObjectOutputStream.defaultWriteObject(Unknown Source)

at java.desktop/javax.swing.JTable.writeObject(Unknown Source)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)

at java.base/java.lang.reflect.Method.invoke(Unknown Source)

at java.base/java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeSerialData(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeOrdinaryObject(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject0(Unknown Source)

at java.base/java.io.ObjectOutputStream.writeObject(Unknown Source)

at com.kdhitesh.layout.LayoutManager$1.actionPerformed(LayoutManager.java:57)

at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)

at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)

at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)

at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)

at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)

at java.desktop/java.awt.Component.processEvent(Unknown Source)

at java.desktop/java.awt.Container.processEvent(Unknown Source)

at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)

at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)

at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)

at java.desktop/java.awt.EventQueue.access$600(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.desktop/java.awt.EventQueue$4.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.desktop/java.awt.EventQueue$5.run(Unknown Source)

at java.base/java.security.AccessController.doPrivileged(Native Method)

at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)

at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)

at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)





java serialization




java serialization






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 11 at 12:19

























asked Nov 11 at 12:01









DHS

55




55












  • IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
    – Zoe
    Nov 11 at 12:12










  • When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
    – JB Nizet
    Nov 11 at 12:17










  • @JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
    – DHS
    Nov 11 at 12:26










  • XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
    – JB Nizet
    Nov 11 at 12:29










  • @JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
    – DHS
    Nov 11 at 12:37


















  • IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
    – Zoe
    Nov 11 at 12:12










  • When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
    – JB Nizet
    Nov 11 at 12:17










  • @JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
    – DHS
    Nov 11 at 12:26










  • XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
    – JB Nizet
    Nov 11 at 12:29










  • @JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
    – DHS
    Nov 11 at 12:37
















IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
– Zoe
Nov 11 at 12:12




IIRC JTable isn't serializable (contains unserializable fields/etc). As a result, you can't serialize it if it contains a JTable (unless it's transient), or if it extends JTable.
– Zoe
Nov 11 at 12:12












When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
– JB Nizet
Nov 11 at 12:17




When asking about an exception, always post the complete and exact exception stack trace. That said, why do you serialize graphical widgets? Save the data or your application, not its widgets. And you'd better choose something other than native serialization, which is very fragile.
– JB Nizet
Nov 11 at 12:17












@JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
– DHS
Nov 11 at 12:26




@JBNizet What do you mean by "other than native serialization". Also, I want to save the layout structure of JTable(along with some data) as it is, so i am serializing it, also i have tried DefaultTableModel, plz check the edit
– DHS
Nov 11 at 12:26












XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
– JB Nizet
Nov 11 at 12:29




XML, JSON, are data formats that are easily parseable, in any language, and don't depend on the particular version of the Java classes you're using.
– JB Nizet
Nov 11 at 12:29












@JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
– DHS
Nov 11 at 12:37




@JBNizet thanks for your solution, but can explain me why is there an exception caused and if it has a solution in java for now...
– DHS
Nov 11 at 12:37

















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