# Error filling print... java.lang.ClassNotFoundException:

**URL:** <https://forum.servoy.com/t/error-filling-print-java-lang-classnotfoundexception/12849>\
**Category:** Classic Servoy\
**Created:** [September 10, 2010, 10:50pm UTC](https://forum.servoy.com/t/error-filling-print-java-lang-classnotfoundexception/12849 "2010-09-10T22:50:30Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Providence1](https://avatars.discourse-cdn.com/v4/letter/p/f14d63/32.png) [@Providence1](https://forum.servoy.com/u/Providence1)\
**Post date:** [September 10, 2010, 10:50pm UTC](https://forum.servoy.com/t/error-filling-print-java-lang-classnotfoundexception/12849/1 "2010-09-10T22:50:30Z")

</div>

OMG! First a special shout out to Robert Ivens for having the patience to pull a part a form, object by object…

This post is more of a ‘How-To-Avoid’ this if you get this error. There is nothing on the forums or the internets as of yet.

```auto
Error filling print... java.lang.ClassNotFoundException: Will not load classes from default package (x) 
net.sf.jasperreports.engine.JRRuntimeException: java.lang.ClassNotFoundException: Will not load classes from default package (x)     at net.sf.jasperreports.engine.base.JRBaseVariable.getIncrementerFactoryClass(JRBaseVariable.java:179)     at net.sf.jasperreports.engine.fill.JRFillVariable.getIncrementerFactoryClass(JRFillVariable.java:120)     at net.sf.jasperreports.engine.fill.JRFillVariable.getIncrementer(JRFillVariable.java:307)     at net.sf.jasperreports.engine.fill.JRCalculator.estimateVariables(JRCalculator.java:180)     at net.sf.jasperreports.engine.fill.JRFillDataset.next(JRFillDataset.java:789)     at net.sf.jasperreports.engine.fill.JRBaseFiller.next(JRBaseFiller.java:1478)     at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:125)     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:942)     at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:841)     at net.sf.jasperreports.engine.fill.JRFiller.fillReport(JRFiller.java:58)     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:417)     at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:247)     at com.jaspersoft.ireport.designer.compiler.IReportCompiler.run(IReportCompiler.java:877)     at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:572)     at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:997) Caused by: java.lang.ClassNotFoundException: Will not load classes from default package (x)     at org.netbeans.ProxyClassLoader.loadClass(ProxyClassLoader.java:198)     at java.lang.ClassLoader.loadClass(ClassLoader.java:248)     at java.lang.Class.forName0(Native Method)     at java.lang.Class.forName(Class.java:247)     at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForRealName(JRClassLoader.java:175)     at net.sf.jasperreports.engine.util.JRClassLoader.loadClassForName(JRClassLoader.java:115)     at net.sf.jasperreports.engine.base.JRBaseVariable.getIncrementerFactoryClass(JRBaseVariable.java:175)     ... 14 more

```

Notice that first line:

```auto
net.sf.jasperreports.engine.JRRuntimeException: java.lang.ClassNotFoundException: Will not load classes from default package (x) 

```

The x stands for the x in the Incrementer Factory Class found in the Properties pane when you click on sumAmount in Variables in the Report Inspector as in the picture below…

Taking out that x will get rid of the error.

But then you knew that already, didn’t you?

 ![Incrementer Factory Class.png](https://canada1.discourse-cdn.com/flex010/uploads/servoy/original/2X/3/3951a46b695baa2a235b51b40161c3e47a228974.png)