What does ExceptionInInitializerErrror mean?

Wed, 30 Nov 2005 06:54:05 -0800 

I guess I encounter an error when the following line is run.

  private DaoManager daoManager = DaoConfig.getDaomanager();


ERROR - Servlet.service() for servlet jsp threw exception
java.lang.ExceptionInInitializerError
        at 
com.erp.ibatis.user.service.UserRoleService.<init>(UserRoleService.java:25)
        at 
com.erp.ibatis.user.service.UserRoleService.<clinit>(UserRoleService.java:21)

My dao.xml in WEB-INF/classes directory looks like this
  <transactionManager type="SQLMAP">
    <property name="SqlMapConfigResource"
value="com/erp/ibatis/user/sqlmapdao/sql/SqlMapConfig.xml"/>
  </transactionManager>

  <dao interface="com.erp.ibatis.user.iface.UserProfileDao"
implementation="com.erp.ibatis.user.sqlmapdao.UserProfileSqlMapDao"/>

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