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How to serialize java.math.BigDecimal using java.beans.XMLEncoder --- URGENT

Posted on 2007-03-26
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Last Modified: 2008-01-09
When tried to serialize java.math.BigDecimal using java.beans.XMLEncoder it has given the following error.

java.lang.InstantiationException: java.math.BigDecimal
Continuing ...
java.lang.Exception: discarding statement XMLEncoder0.writeObject(BigDecimal0);
Continuing ...

OS: Windows XP
eclipse IDE,Tomcat 5.0.19
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Question by:yasoda
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5 Comments
 
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Accepted Solution

by:
el_dios earned 100 total points
ID: 18791852
0
 
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Assisted Solution

by:mnrz
mnrz earned 100 total points
ID: 18791883
hi

if you dont want that BigDecimal to be serialized you may mark it with "transient"

for example:
public class YourClass implements Serializable{
...
   private transient BigDecimal myDecimal;

}

but if you need to serialize that instance variable, you should put two following methods in your class definition and customize serialization:

private void writeObject(ObjectOutputStream os) {
try {
os.defaultWriteObject();
os.writeDouble(myDecimal.doubleValue());
} catch (Exception e) { e.printStackTrace(); }
}

private void readObject(ObjectInputStream is) {
try {
is.defaultReadObject();
myDecimal = BigDecimal.valueOf((is.readDouble()));
} catch (Exception e) { e.printStackTrace(); }
}
0
 
LVL 30

Expert Comment

by:Mayank S
ID: 18793547
Try using Castor instead of XMLBeans - www.castor.org
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