之前没涉及过这个 最近工作需要要研究这个 遇到点问题
下了个jfreechart源码 网上也搜了不少代码 但是都是在javabean里写的代码
怎么让它们实现 搞了源码不知道如何实现 头疼啊
谢谢各位啦！本人基础不好 问题可能比较低端
见谅 见谅！
下了个jfreechart源码 网上也搜了不少代码 但是都是在javabean里写的代码
怎么让它们实现 搞了源码不知道如何实现 头疼啊
谢谢各位啦！本人基础不好 问题可能比较低端
见谅 见谅！
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代码如下
package org.jfree.chart.demo; import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension; import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardLegend;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.LineAndShapeRenderer;
import org.jfree.data.CategoryDataset;
import org.jfree.data.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities; /**
* A simple demonstration application showing how to create a line chart using data from a
* {@link CategoryDataset}.
*
* @author David Gilbert
*/
public class LineChartDemo1 extends ApplicationFrame { /**
* Creates a new demo.
*
* @param title the frame title.
*/
public LineChartDemo1(String title) { super(title); CategoryDataset dataset = createDataset();
JFreeChart chart = createChart(dataset);
ChartPanel chartPanel = new ChartPanel(chart);
chartPanel.setPreferredSize(new Dimension(500, 270));
setContentPane(chartPanel); } /**
* Creates a sample dataset.
*
* @return The dataset.
*/
private CategoryDataset createDataset() {
// row keys...
String series1 = "First ";
String series2 = "Second ";
String series3 = "Third "; // column keys...
String type1 = "Type 1 ";
String type2 = "Type 2 ";
String type3 = "Type 3 ";
String type4 = "Type 4 ";
String type5 = "Type 5 ";
String type6 = "Type 6 ";
String type7 = "Type 7 ";
String type8 = "Type 8 "; // create the dataset...
DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(1.0, series1, type1);
dataset.addValue(4.0, series1, type2);
dataset.addValue(3.0, series1, type3);
dataset.addValue(5.0, series1, type4);
dataset.addValue(5.0, series1, type5);
dataset.addValue(7.0, series1, type6);
dataset.addValue(7.0, series1, type7);
dataset.addValue(8.0, series1, type8); dataset.addValue(5.0, series2, type1);
dataset.addValue(7.0, series2, type2);
dataset.addValue(6.0, series2, type3);
dataset.addValue(8.0, series2, type4);
dataset.addValue(4.0, series2, type5);
dataset.addValue(4.0, series2, type6);
dataset.addValue(2.0, series2, type7);
dataset.addValue(1.0, series2, type8); dataset.addValue(4.0, series3, type1);
dataset.addValue(3.0, series3, type2);
dataset.addValue(2.0, series3, type3);
dataset.addValue(3.0, series3, type4);
dataset.addValue(6.0, series3, type5);
dataset.addValue(3.0, series3, type6);
dataset.addValue(4.0, series3, type7);
dataset.addValue(3.0, series3, type8); return dataset;
}
/**
* Creates a sample chart.
*
* @param dataset a dataset.
*
* @return The chart.
*/
private JFreeChart createChart(CategoryDataset dataset) {
// create the chart...
JFreeChart chart = ChartFactory.createLineChart(
"Line Chart Demo 1 ", // chart title
"Type ", // domain axis label
"Value ", // range axis label
dataset, // data
PlotOrientation.VERTICAL, // orientation
true, // include legend
true, // tooltips
false // urls
); // NOW DO SOME OPTIONAL CUSTOMISATION OF THE CHART...
StandardLegend legend = (StandardLegend) chart.getLegend();
legend.setDisplaySeriesShapes(true);
legend.setShapeScaleX(1.5);
legend.setShapeScaleY(1.5);
legend.setDisplaySeriesLines(true); chart.setBackgroundPaint(Color.white); CategoryPlot plot = chart.getCategoryPlot();
plot.setBackgroundPaint(Color.lightGray);
plot.setRangeGridlinePaint(Color.white); // customise the range axis...
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
rangeAxis.setAutoRangeIncludesZero(true);
rangeAxis.setUpperMargin(0.20);
rangeAxis.setLabelAngle(Math.PI / 2.0); //
// * JFREECHART DEVELOPER GUIDE *
// * The JFreeChart Developer Guide, written by David Gilbert, is available *
// * to purchase from Object Refinery Limited: *
// * *
// * http://www.object-refinery.com/jfreechart/guide.html *
// * *
// * Sales are used to provide funding for the JFreeChart project - please *
// * support us so that we can continue developing free software. *
// ****************************************************************************
// customise the renderer...
LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot.getRenderer();
renderer.setDrawShapes(true); renderer.setSeriesStroke(
0, new BasicStroke(2.0f,
BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND,
1.0f,
new float[] {10.0f, 6.0f},
0.0f)
);
renderer.setSeriesStroke(
1, new BasicStroke(2.0f,
BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND,
1.0f,
new float[] {6.0f, 6.0f},
0.0f)
);
renderer.setSeriesStroke(
2, new BasicStroke(2.0f,
BasicStroke.CAP_ROUND,
BasicStroke.JOIN_ROUND,
1.0f,
new float[] {2.0f, 6.0f},
0.0f)
); renderer.setItemLabelsVisible(true);
renderer.setPositiveItemLabelPosition(new ItemLabelPosition());
renderer.setNegativeItemLabelPosition(new ItemLabelPosition());
// OPTIONAL CUSTOMISATION COMPLETED.
return chart;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) { LineChartDemo1 demo = new LineChartDemo1( "Line Chart Demo ");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true); } }
这些应该是写在javaBean里把？
写完了怎么才能让它实现出来？需要jsp么
需要jsp的话 要怎么写？