A pie chart (or a circle chart) is a circular statistical graphic which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice (and consequently its central angle and area), is proportional to the quantity it represents.
- jfreeChart-1.0.19.jar
- jcommon-1.0.8.jar
- package com.kartik.pie;
public class DemoData {
private String name;
private String description;
private double data;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public double getData() {
return data;
}
Code 2:
package com.kartik.pie;
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import org.jfree.chart.plot.PiePlotState;
import org.jfree.chart.plot.RingPlot;
import org.jfree.data.general.PieDataset;
import org.jfree.text.TextUtilities;
import org.jfree.ui.TextAnchor;
public class CustomRingPlot extends RingPlot {
/**
*
*/
private static final long serialVersionUID = 1L;
private Font centerTextFont;
private Color centerTextColor;
private int total;
public CustomRingPlot(PieDataset dataset, Font centerTextFont,
Color centerTextColor) {
super(dataset);
this.centerTextFont = centerTextFont;
this.centerTextColor = centerTextColor;
}
public CustomRingPlot(PieDataset dataset, Font centerTextFont,
Color centerTextColor, int total) {
super(dataset);
this.centerTextFont = centerTextFont;
this.centerTextColor = centerTextColor;
this.total = total;
}
protected void drawItem(Graphics2D g2, int section, Rectangle2D dataArea,
PiePlotState state, int currentPass) {
super.drawItem(g2, section, dataArea, state, currentPass);
g2.setFont(this.centerTextFont);
g2.setPaint(Color.BLACK);
TextUtilities.drawAlignedString("Total Spendings", g2,
(float) dataArea.getCenterX(), (float) dataArea.getCenterY(),
TextAnchor.BOTTOM_CENTER);
g2.setPaint(this.centerTextColor);
g2.setFont(new Font(Font.SANS_SERIF, Font.HANGING_BASELINE, 14));
TextUtilities.drawAlignedString("$" + this.total, g2,
(float) dataArea.getCenterX(), (float) dataArea.getCenterY(),
TextAnchor.TOP_CENTER);
}
/*
* protected void drawItem(Graphics2D g2, int section, Rectangle2D dataArea,
* PiePlotState state, int currentPass) { super.drawItem(g2, section,
* dataArea, state, currentPass); g2.setFont(this.centerTextFont);
* g2.setPaint(Color.BLACK);
* TextUtilities.drawAlignedString("Total Spendings", g2, (float)
* dataArea.getCenterX(), (float) dataArea.getCenterY(),
* TextAnchor.BOTTOM_CENTER); g2.setPaint(this.centerTextColor);
* g2.setFont(new Font(Font.SANS_SERIF, Font.HANGING_BASELINE, 14));
* TextUtilities.drawAlignedString("$", g2, (float) dataArea.getCenterX(),
* (float) dataArea.getCenterY(), TextAnchor.TOP_CENTER); }
*/
}
Code 3:
package com.kartik.pie;
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.awt.Point;
import java.awt.geom.Rectangle2D;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.DecimalFormat;
import java.util.ArrayList;
import java.util.List;
import javax.swing.JPanel;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.labels.PieSectionLabelGenerator;
import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
import org.jfree.chart.plot.RingPlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleEdge;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;
import org.jfree.util.Rotation;
/**
* A simple demonstration application showing how to create a pie chart using
* data from a {@link DefaultPieDataset}.
*/
public class PieChartDemo2 extends ApplicationFrame {
private static int totalAmount=0;
/**
*
*/
private static final long serialVersionUID = 1L;
private static int maxSize=0;
/**
* Default constructor.
*
* @param title the frame title.
*/
public PieChartDemo2(String title) {
super(title);
setContentPane(createDemoPanel());
}
/**
*
*
* @return A sample dataset.
*/
private static PieDataset createDataset() {
DefaultPieDataset dataset = new DefaultPieDataset();
/*dataset.setValue("one", new Double(43.2));
dataset.setValue("two", new Double(10.0));
dataset.setValue("three", new Double(27.5));
dataset.setValue("four", new Double(17.5));
dataset.setValue("five", new Double(11.0));
dataset.setValue("six", new Double(19.4));
dataset.setValue("seven", new Double(43.2));*/
List<DemoData> data=setData();
totalAmount=sumOfValue(data);
dataset=getdata(data);
return dataset;
}
private static DefaultPieDataset getdata(List<DemoData> data){
DefaultPieDataset dataSet=new DefaultPieDataset();
for (DemoData demoData : data) {
dataSet.setValue(demoData.getName(), demoData.getData());
}
return dataSet;
}
private static int sumOfValue(List<DemoData> data){
int sum=0;
for (DemoData demoData : data) {
sum+=demoData.getData();
}
return sum;
}
private static List<DemoData> setData(){
List<DemoData> list=new ArrayList<DemoData>();
DemoData one=new DemoData();
one.setName("ONE");
one.setData( new Double(43.2));
list.add(one);
DemoData two=new DemoData();
two.setName("TWO");
two.setData(new Double(10.0));
list.add(two);
DemoData three=new DemoData();
three.setName("THREE");
three.setData( new Double(27.5));
list.add(three);
DemoData four=new DemoData();
four.setName("FOUR");
four.setData( new Double(17.5));
list.add(four);
DemoData five=new DemoData();
five.setName("FIVE");
five.setData( new Double(11.0));
list.add(five);
DemoData six=new DemoData();
six.setName("SIX");
six.setData( new Double(19.4));
list.add(six);
DemoData seven=new DemoData();
seven.setName("SEVEN");
seven.setData( new Double(9.2));
list.add(seven);
DemoData twenty=new DemoData();
twenty.setName("twentyOne");
twenty.setData( new Double(65.0));
list.add(twenty);
return list;
}
private static JFreeChart createChart(PieDataset dataset) {
//RingPlot plot = new RingPlot(dataset);
RingPlot plot = null;
//PiePlot plot = (PiePlot) chart.getPlot();
// plot = (RingPlot) chart.getPlot();
plot = new CustomRingPlot((PieDataset)dataset, new Font(Font.SANS_SERIF, Font.BOLD, 13), Color.BLUE,totalAmount);
JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT,
plot, true);
chart.setBackgroundPaint(new GradientPaint(new Point(100, 100),
Color.WHITE, new Point(100, 100), Color.WHITE));
plot.setNoDataMessage("No data available");
plot.setDirection(Rotation.ANTICLOCKWISE);
plot.setSectionDepth(0.50D); //this is required for circle radios
plot.setBaseSectionOutlineStroke(new BasicStroke(0.5f));
plot.setCircular(true);
plot.setSeparatorsVisible(false); //this is required otherwise inside circle lot of straight line will come
plot.setForegroundAlpha(1.0f); //this is required to display deep color inside pie chart
plot.setOutlinePaint(null); //this is required for circle border if comment this line
plot.setShadowPaint(null);
plot.setOuterSeparatorExtension(50);
plot.setInnerSeparatorExtension(50);
plot = setSectionPaintColors(plot);
LegendTitle legend = chart.getLegend();
legend.setPosition(RectangleEdge.RIGHT);//this is also required to display legend label
//legend.setFrame(BlockBorder.NONE); //this is required legend border if you need otherwise comments this line
Rectangle2D r2DD = new Rectangle2D.Double(0, 0, 5, 15);
plot.setLegendItemShape(r2DD);
/*StandardPieSectionLabelGenerator standardPieSectionLabelGenerator = new StandardPieSectionLabelGenerator(("{0}:{2}"),NumberFormat.getNumberInstance(), new DecimalFormat("0.0%"));
plot.setLabelGenerator(standardPieSectionLabelGenerator);*/
@SuppressWarnings("unchecked")
List<String> key=dataset.getKeys();
for (String string : key) {
if(string.length()>maxSize){
maxSize=string.length();
}
}
PieSectionLabelGenerator labelGenerator = new StandardPieSectionLabelGenerator("{2}{1}{0}", new DecimalFormat("0.00"), new DecimalFormat("0%") ){
private static final long serialVersionUID = 1L;
@SuppressWarnings("rawtypes")
@Override
protected Object[] createItemArray(PieDataset dataset, Comparable key) {
Object[] array = super.createItemArray(dataset, key);
Object[] array1 = new Object[array.length];
int count=0;
for (Object object : array) {
StringBuffer sss=new StringBuffer();
if(count == 1){
sss.append(object.toString());
sss=charSpace(sss,object.toString().length(),9);
}else if(count == 2){
sss=charDigit(sss,object.toString().length(),5);
sss.append(object.toString());
if(object.toString().length()==2){
sss=charSpaceDigit(sss,object.toString().length()+1,6);
}
else{
sss=charSpace(sss,object.toString().length(),6);
}
}else if(count == 0){
sss.append(object.toString().substring(0, 1).toUpperCase() + object.toString().substring(1,object.toString().length()).toLowerCase());
}else{
sss.append(object.toString());
}
array1[count] = sss.toString();
count++;
}
return array1;
}
};
plot.setLabelGenerator(null);
//plot.setLabelGenerator(labelGenerator); //this is required if you need display inside circle your description otherwise put null
plot.setLegendLabelGenerator(labelGenerator); //this is required to display legend label
chart.setPadding(new RectangleInsets(-6, 0, 0, 20)); //this is required for right side of legend space
chart.setBorderVisible(true);
chart.setBorderPaint(Color.WHITE);
chart.setBorderStroke(new BasicStroke(0.3f));
return chart;
}
/**
* Creates a panel for the demo (used by SuperDemo.java).
*
* @return A panel.
*/
public static JPanel createDemoPanel() {
JFreeChart chart = createChart(createDataset());
try {
ChartUtilities.writeChartAsPNG(new FileOutputStream(new File("D:\\sampleChart.png")) , chart, 400, 300);
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return new ChartPanel(chart);
}
private static RingPlot setSectionPaintColors(RingPlot plot) {
List<?> listOfData = plot.getDataset().getKeys();
String[] color = getColors();
if (color != null && color.length > 0) {
int count=0;
for (Object string : listOfData) {
plot.setSectionPaint((String)string,Color.decode(color[count]));
count++;
}
}
return plot;
}
private static String[] getColors() {
String[] colors ={"#41f46e", "#f47f41", "#5b2a44","#DF0096","#CF0096","#EE0096","#BBCCCC","#4286f4"};
return colors;
}
private static StringBuffer charSpace(StringBuffer sb,int datalength,int MaxSize){
if(datalength==MaxSize){
sb.append(" ");
return sb;
}else{
sb.append(" ");
return charSpace(sb,datalength+1,MaxSize);
}
}
private static StringBuffer charSpaceDigit(StringBuffer sb,int datalength,int MaxSize){
if(datalength==MaxSize){
sb.append(" ");
return sb;
}else{
sb.append(" ");
return charSpaceDigit(sb,datalength+1,MaxSize);
}
}
private static StringBuffer charDigit(StringBuffer sb,int datalength,int MaxSize){
if(datalength==2){
sb.append(" ");
return sb;
}
return sb;
}
/**
* Starting point for the demonstration application.
*
* @param args ignored.
*/
public static void main(String[] args) {
PieChartDemo2 demo = new PieChartDemo2("Pie Chart Demo 1");
demo.pack();
RefineryUtilities.centerFrameOnScreen(demo);
demo.setVisible(true);
}
}
OUTPUT:
I am Kartik Chandra Mandal from Bangalore, India. Working as software engineer in Java technology. Have good knowledge of OWASP and CSRF in security for applications and it's implementation in Java technology.