学步园

JFreeChart在制作折线图的时候可以使用两种不同的方式

package Line;

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.StandardChartTheme;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;

public class Line {
	public static void main(String[] args) {
		StandardChartTheme mChartTheme = new StandardChartTheme("CN");
		mChartTheme.setLargeFont(new Font("黑体", Font.BOLD, 20));
		mChartTheme.setExtraLargeFont(new Font("宋体", Font.PLAIN, 15));
		mChartTheme.setRegularFont(new Font("宋体", Font.PLAIN, 15));
		ChartFactory.setChartTheme(mChartTheme);		
		CategoryDataset mDataset = GetDataset();
		JFreeChart mChart = ChartFactory.createLineChart(
				"折线图",
				"年份",
				"数量",
				mDataset,
				PlotOrientation.VERTICAL,
				true, 
				true, 
				false);
		
		CategoryPlot mPlot = (CategoryPlot)mChart.getPlot();
		mPlot.setBackgroundPaint(Color.LIGHT_GRAY);
		mPlot.setRangeGridlinePaint(Color.BLUE);//背景底部横虚线
		mPlot.setOutlinePaint(Color.RED);//边界线
		
		ChartFrame mChartFrame = new ChartFrame("折线图", mChart);
		mChartFrame.pack();
		mChartFrame.setVisible(true);

	}
	public static CategoryDataset GetDataset()
	{
		DefaultCategoryDataset mDataset = new DefaultCategoryDataset();
		mDataset.addValue(1, "First", "2013");
		mDataset.addValue(3, "First", "2014");
		mDataset.addValue(2, "First", "2015");
		mDataset.addValue(6, "First", "2016");
		mDataset.addValue(5, "First", "2017");
		mDataset.addValue(12, "First", "2018");
		mDataset.addValue(14, "Second", "2013");
		mDataset.addValue(13, "Second", "2014");
		mDataset.addValue(12, "Second", "2015");
		mDataset.addValue(9, "Second", "2016");
		mDataset.addValue(5, "Second", "2017");
		mDataset.addValue(7, "Second", "2018");
		return mDataset;
	}


}

第二种方式：

package Line;

import java.awt.Font;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;

public class XYLine {
	public static void main(String[] args) {
		StandardChartTheme mChartTheme = new StandardChartTheme("CN");
		mChartTheme.setLargeFont(new Font("黑体", Font.BOLD, 20));
		mChartTheme.setExtraLargeFont(new Font("宋体", Font.PLAIN, 15));
		mChartTheme.setRegularFont(new Font("宋体", Font.PLAIN, 15));
		ChartFactory.setChartTheme(mChartTheme);		
		XYSeriesCollection mCollection = GetCollection();
		JFreeChart mChart = ChartFactory.createXYLineChart(
				"折线图",
				"X",
				"Y",				
				mCollection,
				PlotOrientation.VERTICAL,
				true, 
				true, 
				false);
		ChartFrame mChartFrame = new ChartFrame("折线图", mChart);
		mChartFrame.pack();
		mChartFrame.setVisible(true);

	}	
	public static XYSeriesCollection GetCollection()
	{
		XYSeriesCollection mCollection = new XYSeriesCollection();
		XYSeries mSeriesFirst = new XYSeries("First");
		mSeriesFirst.add(1.0D, 1.0D);
	    mSeriesFirst.add(2D, 4D);
	    mSeriesFirst.add(3D, 3D);
	    mSeriesFirst.add(4D, 5D);
	    mSeriesFirst.add(5D, 5D);
	    mSeriesFirst.add(6D, 7D);
	    mSeriesFirst.add(7D, 7D);
	    mSeriesFirst.add(8D, 8D);
	    XYSeries mSeriesSecond = new XYSeries("Second");
	    mSeriesSecond.add(1.0D, 5D);
	    mSeriesSecond.add(2D, 7D);
	    mSeriesSecond.add(3D, 6D);
	    mSeriesSecond.add(4D, 8D);
	    mSeriesSecond.add(5D, 4D);
	    mSeriesSecond.add(6D, 4D);
	    mSeriesSecond.add(7D, 2D);
	    mSeriesSecond.add(8D, 1.0D);
		mCollection.addSeries(mSeriesFirst);
		mCollection.addSeries(mSeriesSecond);
		return mCollection;
	}

}

本文为xyw_Eliot原创，转载请注明出处：http://blog.csdn.net/xyw_eliot/article/details/8692643