Error during Serialization......Pls help

demonhead · Post by **demonhead** » Fri Oct 13, 2006 1:31 pm

I have made my own category dataset which implements Serializable, CategoryDataset and extends AbstractDataset.

java.lang.ClassCastException: cannot assign instance of org.jfree.data.general.DatasetGroup to field org.jfree.data.general.AbstractDataset.group of type org.jfree.data.general.DatasetGroup in instance of org.jfree.data.category.NovaCategoryDataset
at java.io.ObjectStreamClass$FieldReflector.setObjFieldValues(ObjectStreamClass.java:1885)
	at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1076)
	at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1851)
	at java.io.ObjectInputStream.defaultReadObject(ObjectInputStream.java:452)
	at org.jfree.data.general.AbstractDataset.readObject(AbstractDataset.java:223)

Would it be okay if let the category dataset does not extend the abstract dataset coz as far as i can see in the code it is called only by the PieDataset?

An urgent reply would help