JFreeChart生成2D折线图

1、源码如下：

/**
 * @Title:LineChart.java
 * @Package:com.you.jfreechart
 * @Description:折线图
 * @author:Youhaidong(游海东)
 * @date:2013-7-24 下午9:51:22
 * @version V1.0
 */
package com.you.jfreechart;

import java.awt.Color;
import java.awt.Font;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
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.title.LegendTitle;
import org.jfree.data.category.DefaultCategoryDataset;

/**
 * 类功能说明
 * 类修改者 修改日期
 * 修改说明
 * <p>Title:LineChart.java</p>
 * <p>Description:游海东个人开发</p>
 * <p>Copyright:Copyright(c)2013</p>
 * @author:游海东
 * @date:2013-7-24 下午9:51:22
 * @version V1.0
 */
public class LineChart {

	/**
	 * @Title:main
	 * @Description:折线图
	 * @param:@param args
	 * @return: void
	 * @throws
	 */
	public static void main(String[] args) {
		//赋值
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		dataset.setValue(128, "北京市", "樟树");
		dataset.setValue(524, "北京市", "枫树");
		dataset.setValue(425, "北京市", "梨树");
		dataset.setValue(368, "北京市", "松树");
		dataset.setValue(986, "北京市", "柏树");
		dataset.setValue(529, "北京市", "梅树");
		dataset.setValue(724, "北京市", "米兰");
		dataset.setValue(659, "北京市", "榆树");
		dataset.setValue(874, "北京市", "桃树");
		dataset.setValue(258, "北京市", "橡树");
		
		//调用生成折线方法
		JFreeChart chart = ChartFactory.createLineChart("树木分布图", "省市", 
				"树木的数量", dataset, PlotOrientation.VERTICAL, true, true, false);
		//设置背景色
		chart.setBackgroundPaint(Color.white);
		CategoryPlot categoryPlot = chart.getCategoryPlot();
		//设置画布背景色
		categoryPlot.setBackgroundPaint(Color.orange);
		//设置折线颜色
		categoryPlot.setDomainGridlinePaint(Color.magenta);
		categoryPlot.setDomainGridlinesVisible(true);
		//设置水平线颜色
		categoryPlot.setRangeGridlinePaint(Color.yellow);
		CategoryAxis categoryAxis = categoryPlot.getDomainAxis();
		//设置X轴标题名向上45度
		categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
		//解决X轴中文乱码
		categoryAxis.setLabelFont(new Font("宋体",Font.BOLD,12));
		categoryAxis.setTickLabelFont(new Font("宋体",Font.BOLD,12));
		categoryPlot.getRangeAxis().setLabelFont(new Font("宋体",Font.BOLD,12));
		//解决标题乱码
		chart.getTitle().setFont(new Font("宋体",Font.BOLD,20));
		//设置弹出窗口
		ChartFrame chartFrame = new ChartFrame("树木分布图", chart);
		chartFrame.pack();
		chartFrame.setVisible(true);
		
		//解决Legend乱码问题
		LegendTitle legendTitle = chart.getLegend(0);
		legendTitle.setItemFont(new Font("宋体",Font.BOLD,12));

	}

}

2、显示结果如下图：