Jaxb NumberFormatException: For input string: ""

Solution Verified - Updated -

Issue

Our application is trying to marshal an empty string to an int value, but fails with the following exception:

Caused by: java.lang.NumberFormatException: For input string: ""
    at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    at java.lang.Integer.parseInt(Integer.java:470)
    at java.lang.Integer.valueOf(Integer.java:554)
    at com.sun.xml.bind.DatatypeConverterImpl._parseInt(DatatypeConverterImpl.java:103)

Environment

JBoss Enterprise Applicaiton Platform 5.1

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