【java】实现柱状图 饼状图 博客分类： java知识总结 java

一、前提： 下载增加jar包 ： jfreechart-1.0.13.jar ， jcommon-1.0.14.jar

二、柱状图：

2.1 效果

2.2 代码

 

public class HistogramJPanel {
	private String title; // 图标题
	private String verticallyTitle;// 纵向坐标显示名称
	private String horizontalTitle;// 横向坐标显示名称
	private List<String> elem = new ArrayList<String>();// 内容初始值 （每个类型显示文字）
	private List<Float> value = new ArrayList<Float>();// 内容初始值(每个类型显示精度)

	public HistogramJPanel(String title, String horizontalTitle,
			String verticallyTitle, List<String> elem, List<Float> value) {
		this.title = title;
		this.horizontalTitle = horizontalTitle;
		this.verticallyTitle = verticallyTitle;
		this.elem = elem;
		this.value = value;
	}

	public HistogramJPanel() {

	}

	private class PanelByHistogram extends DemoPanel implements ChangeListener {
		/**
		 * 
		 */
		private static final long serialVersionUID = 1L;
		private JScrollBar scroller;
		private SlidingCategoryDataset dataset;// 一种滑动类型（图形）数据设置

		private CategoryDataset createDataset() throws Exception {
			DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset();// 缺省类型数据设置

			if (elem.size() == 0) {
				JOptionPane.showMessageDialog(null, "柱状图显示数据不符合要求请重新设置", "",
						JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类 61行)");
			}

			if (elem.size() != value.size()) {
				JOptionPane.showMessageDialog(null, "柱状图显示数据不符合要求请重新设置", "",
						JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类 67行)");
			}
			for (int i = 0; i < elem.size(); i++) {
				defaultcategorydataset.addValue(value.get(i),"PanelByHistogram", elem.get(i));
			}

			return defaultcategorydataset;
		}

		private JFreeChart createChart(CategoryDataset categorydataset)
				throws Exception {
			if ((verticallyTitle == null || verticallyTitle.trim().length() == 0)) {
				JOptionPane.showMessageDialog(null, "纵向坐标显示中文?", "",JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类  81行)");
			}
			if ((horizontalTitle == null || horizontalTitle.trim().length() == 0)) {
				JOptionPane.showMessageDialog(null, "横向坐标显示中文?", "",	JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类   85行)");
			}

			JFreeChart jfreechart = ChartFactory.createBarChart(title,
					horizontalTitle, verticallyTitle, categorydataset,
					PlotOrientation.VERTICAL, false, true, false);

			TextTitle t = jfreechart.getTitle();
			t.setFont(new Font("宋体", Font.BOLD, 30));// 标题文字

			CategoryPlot categoryplot = (CategoryPlot) jfreechart.getPlot();
		//	categoryplot.setRangeAxisLocation(AxisLocation.BOTTOM_OR_LEFT);
			//categoryplot.setRangePannable(true);
			
			CategoryAxis categoryaxis = categoryplot.getDomainAxis();// X轴
			categoryaxis.setMaximumCategoryLabelWidthRatio(0.8F);
			categoryaxis.setLowerMargin(0.02D);
			categoryaxis.setUpperMargin(0.02D);
			categoryaxis.setLabelFont(new Font("宋体", Font.BOLD, 20));// x轴标题文字
			categoryaxis.setTickLabelFont(new Font("黑体", Font.BOLD, 10));// x轴坐标上文字

			NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis();// Y轴
			numberaxis.setLabelFont(new Font("宋体", Font.BOLD, 20));// x轴标题文字
			numberaxis.setTickLabelFont(new Font("黑体", Font.BOLD, 10));// x轴坐标上文字
			numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
			//numberaxis.setRange(0.0D, 100D);

			BarRenderer barrenderer = (BarRenderer) categoryplot.getRenderer();
			barrenderer.setDrawBarOutline(false);
			
			barrenderer.setItemLabelAnchorOffset(11D);
			barrenderer.setBaseItemLabelsVisible(true);
		    barrenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
			//barrenderer.setBaseToolTipGenerator(new StandardCategoryToolTipGenerator("{0}, {1}) = {2} per 100,000", new DecimalFormat("0")));
		
			
			
			GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F,Color.blue, 0.0F, 0.0F, new Color(0, 0, 64));
			barrenderer.setSeriesPaint(0, gradientpaint);
			return jfreechart;
		}

		public void stateChanged(ChangeEvent changeevent) {
			dataset.setFirstCategoryIndex(scroller.getValue());
		}

		private PanelByHistogram() throws Exception {
			super(new BorderLayout());
			dataset = new SlidingCategoryDataset(createDataset(), 0, elem.size());
			JFreeChart jfreechart = createChart(dataset);
			addChart(jfreechart);
			ChartPanel chartpanel = new ChartPanel(jfreechart);
////			chartpanel.setPreferredSize(new Dimension(800, 600));
//			scroller = new JScrollBar(0, 0, elem.size(), 0, elem.size());
			add(chartpanel);
//			scroller.getModel().addChangeListener(this);
//			JPanel jpanel = new JPanel(new BorderLayout());
//			jpanel.add(scroller);
//			jpanel.setBorder(BorderFactory.createEmptyBorder(2, 2, 2, 2));
//			jpanel.setBackground(Color.white);
//			add(jpanel, "South");
		}

	}

	public String getTitle() {
		return title;
	}

	public void setTitle(String title) {
		this.title = title;
	}

	public String getVerticallyTitle() {
		return verticallyTitle;
	}

	public void setVerticallyTitle(String verticallyTitle) {
		this.verticallyTitle = verticallyTitle;
	}

	public String getHorizontalTitle() {
		return horizontalTitle;
	}

	public void setHorizontalTitle(String horizontalTitle) {
		this.horizontalTitle = horizontalTitle;
	}

	public List<String> getElem() {
		return elem;
	}

	public void setElem(List<String> elem) {
		this.elem = elem;
	}

	public List<Float> getValue() {
		return value;
	}

	public void setValue(List<Float> value) {
		this.value = value;
	}

	public JPanel createHistogramPanel() throws Exception {
		return new PanelByHistogram();
	}
}

2.3 调用方式

 

 

HistogramJPanel histogramJPanel = new HistogramJPanel();// 柱状图的panel
histogramJPanel.setTitle("柱状图");
histogramJPanel.setHorizontalTitle("序号");
histogramJPanel.setVerticallyTitle("数据量");
histogramJPanel.setElem(elem);
histogramJPanel.setValue(value);
view.jScrollPane.setViewportView(histogramJPanel.createHistogramPanel());
view.jScrollPane .updateUI();

三、饼状图

3.1 效果

3.2 代码

 

import java.awt.BorderLayout;
import java.awt.Font;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JOptionPane;
import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;

public class PieChartJPanel {
	private String title;
	private List<String> elem = new ArrayList<String>();// 内容初始值 （每个类型显示文字）
	private List<Float> value = new ArrayList<Float>();// 内容初始值(每个类型显示精度)
	public PieChartJPanel(){
		
	}

	
	public PieChartJPanel(String  title,List<String> elem,List<Float> value){
	  this.title=title;
	  this.elem=elem;
	  this.value=value;
	}

	
	private class PieChart extends JPanel{
		/**
		 * 
		 */
		private static final long serialVersionUID = 1L;


		private  PieDataset createDataset()throws Exception{
			if (elem.size() == 0) {
				JOptionPane.showMessageDialog(null, "柱状图显示数据不符合要求请重新设置", "",
						JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类 61行)");
			}

			if (elem.size() != value.size()) {
				JOptionPane.showMessageDialog(null, "柱状图显示数据不符合要求请重新设置", "",
						JOptionPane.INFORMATION_MESSAGE);
				throw new Exception("柱状图显示数据不符合要求请重新设置(PanelByHistogram 类 67行)");
			}
			
			DefaultPieDataset defaultpiedataset = new DefaultPieDataset();
			for (int i = 0; i < elem.size(); i++) {
				defaultpiedataset.setValue(elem.get(i), value.get(i));
			}

			return defaultpiedataset;
		}

		private  JFreeChart createChart(PieDataset piedataset){
		
			JFreeChart jfreechart = ChartFactory.createPieChart(title, piedataset, true, true, false);
			TextTitle t = jfreechart.getTitle();
			t.setFont(new Font("宋体", Font.BOLD, 30));// 标题文字

		//	TextTitle texttitle = jfreechart.getTitle();
		//	texttitle.setToolTipText("A title tooltip!");
			PiePlot pieplot = (PiePlot)jfreechart.getPlot();
			pieplot.setLabelFont(new Font("宋体", 0, 12));
			pieplot.setNoDataMessage("No data available");
			pieplot.setCircular(false);
			pieplot.setLabelGap(0.02D);
			jfreechart.getLegend().setItemFont(new Font("宋体", 0,10));
			return jfreechart;
		}

		
		private PieChart()throws Exception{
			super(new BorderLayout());
			JFreeChart jfreechart=createChart(createDataset());
			ChartPanel chartpanel = new ChartPanel(jfreechart);
//			chartpanel.setPreferredSize(new Dimension(600, 400));
			add(chartpanel);
		}
		
	}
	
	public  JPanel createPieChartPanel() throws Exception{
		return new PieChart();
	}
	
	public String getTitle() {
		return title;
	}
	public void setTitle(String title) {
		this.title = title;
	}
	public List<String> getElem() {
		return elem;
	}
	public void setElem(List<String> elem) {
		this.elem = elem;
	}
	public List<Float> getValue() {
		return value;
	}
	public void setValue(List<Float> value) {
		this.value = value;
	}
}

3.3 调用方式

PieChartJPanel PieChart = new PieChartJPanel();// 饼状图panel
PieChart.setTitle("饼状图");
PieChart.setElem(elem);
PieChart.setValue(value);
view.jScrollPane.setViewportView(PieChart.createPieChartPanel());
view.jScrollPane .updateUI();