1
class GraphGenerator1 extends JPanel {
ChartPanel chartPanel, sbc;
void generator(int t, int Value1, int Value2) {
if (t == 1) {
DefaultCategoryDataset gData = new DefaultCategoryDataset();
gData.setValue(Value1, "What you saved", "");
gData.setValue(Value2, "What you paid", "");
JFreeChart chart = ChartFactory.createBarChart("", "", "", gData,
PlotOrientation.VERTICAL, false, false, false);
chart.setBackgroundPaint(Color.WHITE);
BarRenderer br = (BarRenderer) chart.getCategoryPlot()
.getRenderer();
br.setBarPainter(new StandardBarPainter());
br.setSeriesPaint(0, Color.decode("#97d95c"));
br.setSeriesPaint(1, Color.decode("#437346"));
chart.getCategoryPlot().setBackgroundPaint(new Color(0, 0, 0, 0));
br.setMaximumBarWidth(0.25);
chart.getCategoryPlot().setDomainGridlinesVisible(false);
chart.getCategoryPlot().setRangeGridlinesVisible(false);
chart.getCategoryPlot().getDomainAxis().setTickLabelsVisible(false);
// chart.getCategoryPlot().clearDomainMarkers();
chart.getCategoryPlot().getRangeAxis().setAxisLineVisible(false);
chart.getCategoryPlot().getRangeAxis().setTickMarksVisible(false);
chartPanel = new ChartPanel(chart);
this.setLayout(new BorderLayout());
this.add(chartPanel, BorderLayout.CENTER);
this.setOpaque(true);
}
}
}
class Window extends JFrame implements MouseListener {
GraphGenerator1 x;
JButton j;
Window() {
x = new GraphGenerator1();
x.generator(1, 56, 20);
j = new JButton("CLICK ME");
this.setLayout(new BorderLayout());
this.add(x, BorderLayout.CENTER);
this.add(j, BorderLayout.SOUTH);
j.addMouseListener(this);
this.setVisible(true);
this.setExtendedState(MAXIMIZED_BOTH);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseClicked(MouseEvent e) {
String a = (String) JOptionPane.showInputDialog(rootPane,
"ENTER FIRST VALUE", "", JOptionPane.PLAIN_MESSAGE);
String b = (String) JOptionPane.showInputDialog(rootPane,
"ENTER SECOND VALUE", "", JOptionPane.PLAIN_MESSAGE);
int aa = Integer.parseInt(a);
int bb = Integer.parseInt(b);
x.generator(1, aa, bb);
x.chartPanel.revalidate();
x.chartPanel.repaint();
// I DONT KNOW IT DOESNT UPDATE//
}
public static void main(String args[]) {
new Window();
}
}
我有一个条形图,我想更新,我尝试了重新验证和重绘方法,但没有成功。我甚至添加了chartPanel.addMouseListener(this)。我不知道我该错在哪里,或者我应该在哪里添加一些东西。我有意向Jbutton添加mouseListener,因为在我的原始程序中,我使用JButton中的值来调用图中的更改。我有一个条形图,我想更新,我试图重新验证和重绘方法,但没有成功
哪里了'ChartPanel'的代码?你如何重写它的'paintComponent'方法?并作为附注。 'Window'本身就是'java.awt'包中的一个类。使用这个类的其他名称。 – 2013-03-17 11:48:02
我对jfree不太了解...还是个初学者...我想我已经初始化了chartPanel,并且我一直谨慎的不导入awt包但是我导入了awt.event包 – 2013-03-17 11:53:47
@VishalK:'ChartPanel'是一个类在[tag:jfreechart]库中定义;我修改了下面的例子。 +1 [sscce](http://sscce.org/)。 – trashgod 2013-03-17 12:39:35