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Dear JFreeChart users, dear Dave, I reach the end of an application including a nice chart panel of JFreeChart (v.1.0.10) with - two (I had like three) series of the XYSeriesCollection class. One (I had like two) plots are of XYBarRenderer and another one of StandardXYItemRenderer. - a variable numb...

Dear JFreeChart connoisseurs, It is the first time I come in this forum. I'm not a graduated software developer, but only an hobbyist keen of Java, Swing and now JFreeChart, and using them in my free time. I'm using JFreeChart 1.0.10 (with NetBeans IDE v.7.3.1) with enthusiam, but I have a question ...

I found the reason : In NetBeans IDE / Projects / Librairies , the 'jcommon-1.0.9.jar' file has to appear above the 'jfreechart-1.0.5.jar' file. You can drag and drop the rows of librairy names ('jcommon-1.0.9.jar' above 'jfreechart-1.0.5.jar'), but the IDE makes that 'jcommon-1.0.9.jar' always retu...

Dear, In my new application, I call "... new PainMap()" in a file/class. At compilation (build project) : No error. At run-time well ("Exception in thread "main" java.lang.NullPointerException"). Entering the PaintMap.java file (javadoc), I oberved that " import org.jfree.io.SerialUtilities; import ...