[castor-user] Castor Mapping Tool [NullPointer Exception]

[Andrew Irwin]

Hi,

Castor Version - 1.2
Java - 1.6
I am trying to use the Mapping Tool to generate the Mapping XML file.   
The code I am using is:

                        MappingTool tool = new MappingTool();
                        tool.addClass(Test.class);
                        OutputStream file = new 
FileOutputStream("gen_mapping.xml" );
                        Writer writer = new OutputStreamWriter(file);
                        tool.write(writer);

However, when attempting to add a class using tool.addClass a  
NullPointer Exception is thrown.  See stack trace below:

java.lang.NullPointerException
        at org.exolab.castor.tools.MappingTool.addClass(MappingTool.java:259)
        at org.exolab.castor.tools.MappingTool.addClass(MappingTool.java:237)
        at pd.impl.XMLBindingTest.main(XMLBindingTest.java:48)


Any help on how to resolve this would be grateful.

Thanks,

Andrew