JFreeChart:尽管已加载库，但没有此类方法错误 [英] JFreeChart: no such method error despite having loaded the library

问题描述

我在Java swing应用程序中使用JFreeChart.我确实指定了库在builder.xml文件中的位置:

I am using JFreeChart in a Java swing application. I did specify where the libraries are in my builder.xml file:

<zipgroupfileset dir="../lib" includes="jfreechart-0.9.21.jar" />
<zipgroupfileset dir="../lib" includes="jcommon-1.0.8.jar" />

我导入了那些库； Eclipse没有显示任何编译错误.但是我在运行代码时得到了这个信息:

I imported those libraries; Eclipse doesn't show any compilation error. But I am getting this when I run the code:

java.lang.NoSuchMethodError: org.jfree.data.xy.XYSeries.<init>(Ljava/lang/Comparable;)V

有人可以帮我弄清楚发生了什么吗?谢谢！

Could someone please help me figure out what's going on? Thank you!

推荐答案

请注意，JCommon类已集成到JFreeChart

Note that JCommon classes have been integrated into JFreeChart version 1.5.

从此处下载旧版本时，请确保使用 compatible 版本:例如，最新的JFreeChart JAR jfreechart-1.0.19应该与最新的JCommon JAR jcommon-1.0.23一起使用.您应该在选择的任何JFreeChart的lib文件夹中看到正确的JCommon JAR.

When downloading old releases from here, be sure to use compatible versions: For example, the latest JFreeChart JAR, jfreechart-1.0.19, should be used with the latest JCommon JAR, jcommon-1.0.23. You should see the correct JCommon JAR in the lib folder of whichever JFreeChart you choose.

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