Caused by: java.lang.ClassCastException: java.lang.String cannot be cast to java.sql.Timestamp ireport

Caused by: java.lang.ClassCastException: java.lang.String cannot be cast
to java.sql.Timestamp ireport

WARNING: net.sf.jasperreports.engine.fill.JRExpressionEvalException: Error
evaluating expression : Source text : $F{cre_templ_date} Caused by:
java.lang.ClassCastException: java.lang.String cannot be cast to
java.sql.Timestamp
This is my JRXL
http://jasperreports.sourceforge.net/xsd/jasperreport.xsd"
name="sse_template_audit" pageWidth="1100" pageHeight="842"
columnWidth="1060" leftMargin="20" rightMargin="20" topMargin="20"
bottomMargin="20">