JFreeChart in NetBeans

下載JFreeChart套件，解壓縮後找到以下兩jar檔
1.  jfreechart-1.0.0-rc1.jar：這是 JFreeChart 主要的類別程式庫
2.  jcommon-1.0.0-rc1.jar：提供 JFreeChart 底層操作所需要的各項類別


開啟NetBeans並建立一個新專案(NetBeans > File > New Project... >Gerenal >Java Application)
專案按右鍵 > Properties >Libraries > Add JAR/Folder > 選取以上兩個jar檔將之匯入即完成

之後再程式碼開頭只需導入所需的JFreeChart類別即可
(import org.jfree.chart.* ; 、
import org.jfree.data.general.DefaultPieDataset ;)

Creating charts with JFreeChart is a three step process. You need to:

• create a dataset containing the data to be displayed in the chart;

• create a JFreeChart object that will be responsible for drawing the chart;

• draw the chart to some output target (often, but not always, a panel on

the screen);