JFreeChart
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JFreeChart目前是最好的java图形解决方案,基本能够解决目前的图形方面的需求,主要包括如下几个方面:
JFreeChart核心类库介绍:
1:饼图:
package test;
import java.awt.Font;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class PieCharts extends ApplicationFrame{
public PieCharts(String s){
// 生成显示图表的面板
// 生成饼图数据集对象
}
2:折线图
package test;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class LineCharts extends ApplicationFrame {
public LineCharts(String s) {
super(s);
setContentPane(createDemoLine());
}
public static void main(String[] args) {
LineCharts fjc = new LineCharts("折线图");
fjc.pack();
RefineryUtilities.centerFrameOnScreen(fjc);
fjc.setVisible(true);
}
// 生成显示图表的面板
public static JPanel createDemoLine() {
JFreeChart jfreechart = createChart(createDataset());
return new ChartPanel(jfreechart);
}
// 生成图表主对象JFreeChart
public static JFreeChart createChart(DefaultCategoryDataset linedataset) {
//定义图表对象
JFreeChart chart = ChartFactory.createLineChart("折线图", // chart title
CategoryPlot plot = chart.getCategoryPlot();
// customise the range axis...
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero
rangeAxis.setUpperMargin(0.20);
rangeAxis.setLabelAngle(Math.PI / 2.0);
return chart;
}
//生成数据
public static DefaultCategoryDataset createDataset() {
DefaultCategoryDataset linedataset = new DefaultCategoryDataset();
// 各曲线名称
String series1 = "冰箱";
String series2 = "彩电";
String series3 = "洗衣机";
//
String type1 = "1月";
String type2 = "2月";
String type3 = "3月";
linedataset.addValue(0.0, series1, type1);
linedataset.addValue(4.2, series1, type2);
linedataset.addValue(3.9, series1, type3);
linedataset.addValue(1.0, series2, type1);
linedataset.addValue(5.2, series2, type2);
linedataset.addValue(7.9, series2, type3);
linedataset.addValue(2.0, series3, type1);
linedataset.addValue(9.2, series3, type2);
linedataset.addValue(8.9, series3, type3);
return linedataset;
}
}
3:柱状图:
package test;
import java.awt.Color;
import javax.swing.JPanel;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.StandardCategoryItemLabe
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer3D;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;
public class BarCharts extends ApplicationFrame {
public BarCharts(String s) {
super(s);
setContentPane(createDemoBar());
}
// 生成显示图表的面板
public static JPanel createDemoBar() {
JFreeChart jfreechart = createChart(createDataset());
return new ChartPanel(jfreechart);
}
// 生成图表主对象JFreeChart
public static JFreeChart createChart(CategoryDataset dataset) {
JFreeChart chart = ChartFactory.createBarChart3D("水果销量统计图", //建立3D柱状图
CategoryPlot plot = chart.getCategoryPlot();//设置图的高级属性
BarRenderer3D renderer = new BarRenderer3D();//3D属性修改
renderer.setBaseOutlinePaint(Color.BLACK);//设置边框颜色为black
renderer.setWallPaint(Color.gray); //设置wall的颜色为gray
renderer
//renderer.setItemLabelFont(new Font("黑体",Font.PLAIN,12));//设置柱顶数据字体
renderer.setItemLabelsVisible(true);//打开ItemLabel开关
plot.setRenderer(renderer);//将修改后的属性值保存到图中
plot.setForegroundAlpha(0.6f);//柱的透明度
return chart;
}
// 生成数据
public static CategoryDataset createDataset() {
double[][] data = new double[][] { { 672, 766, 223, 540, 126 },
String[] rowKeys = { "苹果", "梨子", "葡萄" };// 行标志
String[] columnKeys = { "北京", "上海", "广州", "成都", "深圳" };// 列标志
CategoryDataset linedataset = DatasetUtilities.createCategoryDataset(
return linedataset;
}
public static void main(String[] args) {
BarCharts fjc = new BarCharts("柱状图");
fjc.pack();
RefineryUtilities.centerFrameOnScreen(fjc);
fjc.setVisible(true);
}
}
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