Very strange serialization problem(in what should be a simple solution)
I'm trying to serialize a hashTable. And i'm trying to do it the same way that I serialized my binaryTree(which had no problems)
But, for some reason it isn't working. I'm getting a SER file of only 3kb, and when I try to read the file after writing it my hashTable is coming out null.
Here is a few code snippets:
public class DictionaryController implements Serializable
private static final long serialVersionUID = 1L;
private HashTable hash;
private Input inputer;
private RandomAccessFile raf;
public DictionaryController()
if(checkDictionary() == true)
try
FileInputStream inFile = new FileInputStream("res/dictionaryHash.ser");
ObjectInputStream inStream = new ObjectInputStream(inFile);
hash = (HashTable) inStream.readObject();
inStream.close();
catch(IOException ioe)
catch(ClassNotFoundException cnfe)
else
hash = new HashTable(50000, 0.8);
createRandomDictionary();
}This is where I try to open it. when I say hash = new HashTable, hash is coming as null when I debug it.
public void save()
try
FileOutputStream outFile = new FileOutputStream("res/dictionaryHash.ser");
ObjectOutputStream outStream = new ObjectOutputStream(outFile);
outStream.writeObject(hash);
outStream.close();
catch(IOException ioe)
}That is the save. It only writes the file to the hard drive when I close the GUI.
I've got all of my other classes implementing serializable, so I really can't figure out what is wrong.
Anyone have any ideas? I have long values being stored in my hashTable, but all primitives are already Serializable right??
argg. this seems like it should be such a simple problem but it just won't work. And its almost exactly the same as what I did before...
Yeah, my fault for leaving the catch statements empty.
Anyway, it is the output stream IO that is throwing the exception
What do you mean by: You're probably hiding an instance variable with a member variable, but it's impossible to tell from the little bit of code you've shown.
I can print out more code just need to know what stuff to post.
Here is what i get from the printstacktrace:
java.io.WriteAbortedException: writing aborted; java.io.NotSerializableException: hashTable.HashTable$TableEntry
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1278)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1603)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1271)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1845)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1769)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1646)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1274)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:324)
at dictionary.DictionaryController.<init>(DictionaryController.java:50)
at dictionary.MainClass.main(MainClass.java:11)
Caused by: java.io.NotSerializableException: hashTable.HashTable$TableEntry
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1054)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeArray(ObjectOutputStream.java:1224)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1050)
at java.io.ObjectOutputStream.defaultWriteFields(ObjectOutputStream.java:1332)
at java.io.ObjectOutputStream.writeSerialData(ObjectOutputStream.java:1304)
at java.io.ObjectOutputStream.writeOrdinaryObject(ObjectOutputStream.java:1247)
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1052)
at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:278)
at dictionary.DictionaryController.save(DictionaryController.java:157)
at dictionary.DictionaryGUI$ButtonHandler.actionPerformed(DictionaryGUI.java:91)
at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1786)
at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1839)
at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:420)
at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:258)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:245)
at java.awt.Component.processMouseEvent(Component.java:5100)
at java.awt.Component.processEvent(Component.java:4897)
at java.awt.Container.processEvent(Container.java:1569)
at java.awt.Component.dispatchEventImpl(Component.java:3615)
at java.awt.Container.dispatchEventImpl(Container.java:1627)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:3483)
at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3198)
at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3128)
at java.awt.Container.dispatchEventImpl(Container.java:1613)
at java.awt.Window.dispatchEventImpl(Window.java:1606)
at java.awt.Component.dispatchEvent(Component.java:3477)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:456)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:201)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:145)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:137)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:100)
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