Hello to everyone. I'm using Jasper report in my project for creating a report pdf. I created the jrxml file in the jaspersoft studio, but then I compile the report inside my java project and send back the report generated in a html response. My problem is that I use in the report a chart and I need to customize this chart. Using the customization in the Jaspersoft studio is just what I needed, and so Jaspersoft studio has edited my jrxml with these line: <chart> <reportElement x="0" y="0" width="190" height="170" uuid="ef8b3a86-8f4d-4ac5-8680-3741884a0112"> <property name="net.sf.jasperreports.customizer.0.selectionMode" value="allItems"/> <property name="net.sf.jasperreports.customizer.0.allItems" value="true"/> <property name="net.sf.jasperreports.customizer.0.shapeType" value="ellipse"/> <property name="net.sf.jasperreports.customizer.0.shapeWidth" value="5"/> <property name="net.sf.jasperreports.customizer.0.shapeHeight" value="5"/> <property name="net.sf.jasperreports.customizer.class.0" value="net.sf.jasperreports.customizers.shape.LineDotShapeCustomizer"/> </reportElement> <chartTitle/> <chartSubtitle/> <chartLegend/> </chart> If I make a preview in jaspersoft studio is all fine, but when I try to compile the jrxml in my java project it gives me this error: ERROR n.s.j.engine.fill.JRFillSubreport.prepare - Fill 6: exception net.sf.jasperreports.engine.JRRuntimeException: net.sf.jasperreports.engine.JRException: Class not found when loading object from InputStream. Anyone can help me, please?