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我有這個代碼我想編譯,但它拒絕編譯,顯然我錯過了一步。JFreechart編譯時錯誤的演示示例?
我編譯下面的代碼如下:
javac -cp .:jcommon-1.0.0.jar:jfreechart-1.0.1.jar App.java
編譯錯誤基本上是:
找不到org.jfree.data.xy.DefaultXYDataset 和精確DefaultXYDataset。
import java.util.HashSet;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.DefaultXYDataset;
import org.jfree.data.xy.XYDataset;
public class App {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
JFrame frame = new JFrame("Charts");
frame.setSize(600, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
XYDataset ds = createDataset();
JFreeChart chart = ChartFactory.createXYLineChart("Test Chart",
"x", "y", ds, PlotOrientation.VERTICAL, true, true,
false);
ChartPanel cp = new ChartPanel(chart);
frame.getContentPane().add(cp);
}
});
}
private static XYDataset createDataset() {
DefaultXYDataset ds = new DefaultXYDataset();
double[][] data = { {0.1, 0.2, 0.3}, {1, 2, 3} };
ds.addSeries("series1", data);
return ds;
}
}
我在這裏錯過了什麼?
如果你使用Windows,分隔符是',''不:' – Ramanlfc