Error: Java.lang.ClassCastException: int cannot be cast into String

[Ba Ma]

Hi there,

i am trying to make a new Pie Chart. Everything worked out so far for different Charts, with Strings. Now I wanted to make an Pie chart with an Integer and this error occurs:

 

net.sf.jasperreports.engine.JRException: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.fillReport(ReportControler.java:511)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler.access$20(ReportControler.java:486)

at com.jaspersoft.studio.editor.preview.view.control.ReportControler$5.run(ReportControler.java:367)

at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)

Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String

at net.sf.jasperreports.charts.fill.JRFillPieSeries.evaluate(JRFillPieSeries.java:135)

at net.sf.jasperreports.charts.fill.JRFillPieDataset.customEvaluate(JRFillPieDataset.java:198)

at net.sf.jasperreports.engine.fill.JRFillElementDataset.evaluate(JRFillElementDataset.java:162)

at net.sf.jasperreports.engine.fill.JRCalculator.calculateVariables(JRCalculator.java:187)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillDetail(JRVerticalFiller.java:742)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReportStart(JRVerticalFiller.java:262)

at net.sf.jasperreports.engine.fill.JRVerticalFiller.fillReport(JRVerticalFiller.java:122)

at net.sf.jasperreports.engine.fill.JRBaseFiller.fill(JRBaseFiller.java:555)

at net.sf.jasperreports.engine.fill.BaseFillHandle$ReportFill.run(BaseFillHandle.java:119)

at java.lang.Thread.run(Unknown Source)

 

Im new to jaspersoft, so I don't really now how to handle this error.  Could anyone help me out, please?

 

Thank You

 

Cheers 

 

Marco

 

 

[lucianc]

The label expression in pie datasets is required to evaluate to Strings, and there is no automatic conversion from other types.

If you want an integer to display as label, you can use $V{value}.toString() or TEXT($V{value}, "#,###.00") if you want a specific format.

Regards,

Lucian

[Ba Ma]

Hi Lucian,

 

Thank you very much for the rapid answer. It's working now! =)

 

Cheers

 

Marco