画柱形图

package com.wkx.jfreechart;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.util.Random;

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

public class MyBarChartTest extends ApplicationFrame {

	public MyBarChartTest(String title) {
		super(title);
		JFreeChart barChart = createBarChart(createDateset());
		JPanel localPanel = new ChartPanel(barChart);
		localPanel.setPreferredSize(new Dimension(500,270));
		setContentPane(localPanel);
	}

	private String[] city={"北京","上海","深圳","西安","广州"};
	private String[] fruit={"苹果","鸭梨","桔子","香蕉","栗子"};
	
	public static void main(String[] args) {
		MyBarChartTest barChartTest = new MyBarChartTest("柱形图测试");
		barChartTest.pack();
		RefineryUtilities.centerFrameOnScreen(barChartTest);
		barChartTest.setVisible(true);
	}
	
	public CategoryDataset createDateset(){
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		Random r = new Random(); 
		for(int i=0;i<city.length;i++){
			for(int j=0;j<fruit.length;j++){
				dataset.setValue(r.nextDouble() * 10, city[i], fruit[j]);
			}
		}
		return dataset;
	}
	
	public JFreeChart createBarChart(CategoryDataset dataset){
		JFreeChart barChart = ChartFactory.createBarChart("柱状图测试", "水果", "产量", dataset, PlotOrientation.VERTICAL, true, true, true);
		//获取绘图区
		CategoryPlot plot = barChart.getCategoryPlot();
		//设置绘图区网格线是否可见(竖着的网格线)
		plot.setDomainGridlinesVisible(true);
		//设置绘图区网格线颜色(竖着的网格线)
		plot.setDomainGridlinePaint(Color.RED);
		//设置绘图区网格交叉线是否可见(单击时出现的横线)
		plot.setRangeCrosshairVisible(true);
		//设置绘图区网格交叉线颜色(单击时出现的横线)
		plot.setRangeCrosshairPaint(Color.BLUE);
		//数据轴网格线条颜色(横着的线条)
		plot.setRangeGridlinePaint(Color.GRAY);
		//数据轴网格线条样式粗细(横着的线条)
		plot.setRangeGridlineStroke(new BasicStroke(1.0F));
		//获取标题对象
		TextTitle title = barChart.getTitle();
		//设置标题字体
		title.setFont(new Font("黑体", Font.PLAIN, 20));
		//获取底部对象
		LegendTitle legend = barChart.getLegend();
		//设置底部字体
		legend.setItemFont(new Font("宋体", Font.PLAIN, 14));
		//设置绘图区背景色
		barChart.setBackgroundPaint(Color.PINK);
		//数据区的分类轴
		CategoryAxis domainAxis = plot.getDomainAxis();
		//坐标轴标题字体
		domainAxis.setLabelFont(new Font("黑体", Font.PLAIN, 16));
		//坐标轴标尺值字体
		domainAxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 16));
		//数据区的数据轴
		NumberAxis numberAxis = (NumberAxis) plot.getRangeAxis();
		//坐标轴标题字体
		numberAxis.setLabelFont(new Font("黑体", Font.PLAIN, 16));
		//坐标轴标尺值字体
		numberAxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 16));
		
		return barChart;
	}


}