Compression not supported

[Pellegrino]

Hello!

I've tried to save a Chart to file in JPEG-format using the ChartUtilities:

Code: Select all

ChartUtilities.saveChartAsJPEG(new File("chartline.jpg"), chart,  200,100);

but i've received the following error:

Code: Select all

java.lang.UnsupportedOperationException: compression not supported
   at javax.imageio.ImageWriteParam.checkSupportsCompression(libgcj.so.90)
   at javax.imageio.ImageWriteParam.setCompressionMode(libgcj.so.90)
   at org.jfree.chart.encoders.SunJPEGEncoderAdapter.encode(SunJPEGEncoderAdapter.java:167)
   at org.jfree.chart.encoders.EncoderUtil.writeBufferedImage(EncoderUtil.java:134)
   at org.jfree.chart.ChartUtilities.writeChartAsJPEG(ChartUtilities.java:428)
   at org.jfree.chart.ChartUtilities.saveChartAsJPEG(ChartUtilities.java:522)
   at org.jfree.chart.ChartUtilities.saveChartAsJPEG(ChartUtilities.java:474)
   at Charts.BuildJFreeChart.SaveBuildChart(BuildJFreeChart.java:134)
   at ReportTemplate.ReportTemplateImpl.ReportAllTrendImpl.addOverallChart(ReportAllTrendImpl.java:187)
   at GenerateSampleReport.createReport(GenerateSampleReport.java:145)
   at Main.main(Main.java:12)

Under the Windows it works, but under Ubuntu 9.0.4 it don't.

Any idea? Excuse me for my English...

[david.gilbert]

You are using GCJ, which does not have complete support for all the Java APIs. I'd recommend that you use IcedTea or OpenJDK or Sun's JDK.

[Pellegrino]

Thanks, it works with OpenJDK.