JfreeChart图片上title的背景色问题 问个JfreeChart的问题啊?我设置图片的背景色是渐变,然后我的图片title颜色用背景色,但是出来的图片效果title文字却是没有跟背静色融合的很好, 字后面的颜色很白,很不和整个的颜色!不知道为什么?怎么能修改好? 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 请看这个jFreeChart教程。 package nc.ui.test.chart; import java.awt.Dimension; import javax.swing.JPanel; import org.jfree.chart.*; import org.jfree.chart.axis.CategoryAxis; import org.jfree.chart.axis.CategoryLabelPositions; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.BarRenderer; import org.jfree.chart.renderer.category.CategoryItemRenderer; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; public class BarChart3DDemo3 extends ApplicationFrame { public BarChart3DDemo3(String s) { super(s); CategoryDataset categorydataset = createDataset(); JFreeChart jfreechart = createChart(categorydataset); ChartPanel chartpanel = new ChartPanel(jfreechart); chartpanel.setPreferredSize(new Dimension(500, 270)); setContentPane(chartpanel); } private static CategoryDataset createDataset() { DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset(); defaultcategorydataset.addValue(25D, "Series 1", "Category 1"); defaultcategorydataset.addValue(34D, "Series 1", "Category 2"); defaultcategorydataset.addValue(19D, "Series 2", "Category 1"); defaultcategorydataset.addValue(29D, "Series 2", "Category 2"); defaultcategorydataset.addValue(41D, "Series 3", "Category 1"); defaultcategorydataset.addValue(33D, "Series 3", "Category 2"); return defaultcategorydataset; } private static JFreeChart createChart(CategoryDataset categorydataset) { JFreeChart jfreechart = ChartFactory.createBarChart3D("3D Bar Chart Demo", "Category", "Value", categorydataset, PlotOrientation.VERTICAL, true, true, false); CategoryPlot categoryplot = jfreechart.getCategoryPlot(); CategoryAxis categoryaxis = categoryplot.getDomainAxis(); categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(0.39269908169872414D)); CategoryItemRenderer categoryitemrenderer = categoryplot.getRenderer(); categoryitemrenderer.setItemLabelsVisible(true); BarRenderer barrenderer = (BarRenderer)categoryitemrenderer; barrenderer.setItemMargin(0.20000000000000001D); return jfreechart; } public static JPanel createDemoPanel() { JFreeChart jfreechart = createChart(createDataset()); return new ChartPanel(jfreechart); } public static void main(String args[]) { BarChart3DDemo3 barchart3ddemo3 = new BarChart3DDemo3("3D Bar Chart Demo 3"); barchart3ddemo3.pack(); RefineryUtilities.centerFrameOnScreen(barchart3ddemo3); barchart3ddemo3.setVisible(true); } } 试一下这个,调试过的 用fat.jar导出java程序 spring有几种注入方式 java中的FilenameFilter借口是怎么实现的 如果在一个程序中同时响应多个事件? 我写一个连接数据库的类,大家帮我看看这样写有没有问题,大家帮我优化一下 谢谢 Jbuilder中通过程序读取文件内容,被读取的文件应放在那儿?? java xml的问题? 不用数据库保存数据?如何实现 大家帮我看看2个问题,很简单的,谢谢! 安装设置Java环境 java 字符串 比较,找出不同部分 算法 repaint重绘
import javax.swing.JPanel;
import org.jfree.chart.*;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.CategoryLabelPositions;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities; public class BarChart3DDemo3 extends ApplicationFrame
{ public BarChart3DDemo3(String s)
{
super(s);
CategoryDataset categorydataset = createDataset();
JFreeChart jfreechart = createChart(categorydataset);
ChartPanel chartpanel = new ChartPanel(jfreechart);
chartpanel.setPreferredSize(new Dimension(500, 270));
setContentPane(chartpanel);
} private static CategoryDataset createDataset()
{
DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();
defaultcategorydataset.addValue(25D, "Series 1", "Category 1");
defaultcategorydataset.addValue(34D, "Series 1", "Category 2");
defaultcategorydataset.addValue(19D, "Series 2", "Category 1");
defaultcategorydataset.addValue(29D, "Series 2", "Category 2");
defaultcategorydataset.addValue(41D, "Series 3", "Category 1");
defaultcategorydataset.addValue(33D, "Series 3", "Category 2");
return defaultcategorydataset;
} private static JFreeChart createChart(CategoryDataset categorydataset)
{
JFreeChart jfreechart = ChartFactory.createBarChart3D("3D Bar Chart Demo", "Category", "Value", categorydataset, PlotOrientation.VERTICAL, true, true, false);
CategoryPlot categoryplot = jfreechart.getCategoryPlot();
CategoryAxis categoryaxis = categoryplot.getDomainAxis();
categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(0.39269908169872414D));
CategoryItemRenderer categoryitemrenderer = categoryplot.getRenderer();
categoryitemrenderer.setItemLabelsVisible(true);
BarRenderer barrenderer = (BarRenderer)categoryitemrenderer;
barrenderer.setItemMargin(0.20000000000000001D);
return jfreechart;
} public static JPanel createDemoPanel()
{
JFreeChart jfreechart = createChart(createDataset());
return new ChartPanel(jfreechart);
} public static void main(String args[])
{
BarChart3DDemo3 barchart3ddemo3 = new BarChart3DDemo3("3D Bar Chart Demo 3");
barchart3ddemo3.pack();
RefineryUtilities.centerFrameOnScreen(barchart3ddemo3);
barchart3ddemo3.setVisible(true);
}
}
试一下这个,调试过的