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Java学习笔记之jfreeChart 柱状图

2011-12-10 12:56 417 查看
package com.mengya.test.jfreechart;

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.axis.CategoryAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;

/**
 * JFreeChart出生Swing形式的柱状图
 * 
 * @author 张明学
 * 
 */
@SuppressWarnings("serial")
public class JfreeChartTest2 extends ApplicationFrame {

	public JfreeChartTest2(String title) {
		super(title);
		this.setContentPane(createPanel());
	}

	private static CategoryDataset createDataSet() {
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		// dataset.setValue(10, "", "管理人员");
		// dataset.setValue(15, "", "市场人员");
		// dataset.setValue(35, "", "开发人员");
		// dataset.setValue(12, "", "其他人员");

		dataset.setValue(10, "aa", "管理人员");
		dataset.setValue(15, "bb", "市场人员");
		dataset.setValue(35, "cc", "开发人员");
		dataset.setValue(12, "dd", "其他人员");
		return dataset;
	}

	private static JFreeChart createJFreeChart(CategoryDataset dataset) {
		/**
		 * 构建JFreeChart
		 */
		// JFreeChart jfreeChart
		// =ChartFactory.createBarChart("某公司组织结构图","人员分布","人员数量",dataset,PlotOrientation.VERTICAL,false,false,false);
		// JFreeChart jfreeChart
		// =ChartFactory.createBarChart("某公司组织结构图","人员分布","人员数量",dataset,PlotOrientation.VERTICAL,true,false,false);
		JFreeChart jfreeChart = ChartFactory.createBarChart3D("某公司组织结构图",
				"人员分布", "人员数量", dataset, PlotOrientation.VERTICAL, true, false,
				false);
		/**
		 * 设置JFreeChart的属性
		 */
		jfreeChart.setTitle(new TextTitle("某公司组织构图", new Font("宋体", Font.BOLD
				+ Font.ITALIC, 20)));
		CategoryPlot plot = (CategoryPlot) jfreeChart.getPlot();
		CategoryAxis categoryAxis = plot.getDomainAxis();
		categoryAxis.setLabelFont(new Font("仿宋", Font.ROMAN_BASELINE, 12));
		return jfreeChart;
	}

	public static JPanel createPanel() {
		JFreeChart chart = createJFreeChart(createDataSet());
		return new ChartPanel(chart);
	}

	public static void main(String[] args) {

		JfreeChartTest2 chart = new JfreeChartTest2("某公司组织结构图");
		chart.pack();
		chart.setVisible(true);
	}
}
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