Dynamically Labeling a pie chart (arc2d_pie)

Question

Can Somebody guide me how to Dynamically labling a pie chart inside or outside of it.Atpresent I am using rectangle color-code for labling at the top and left side of arch2d but its very confusing as the pie segments grows in number .I am submitting my source code for the pie chart for your reference.You are requested to please guide me with some concrete example as soon as possible .Thanks in advanceimport java.io.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.util.Random;
import java.sql.*;
import java.math.BigDecimal;
public class pie2d extends JPanel{
     Connection con;
     Statement stmt;
     Vector vc,conVector;
     int arraincrement,sum,pieMinusAngle,IntegerToInt;
     double sumAngle,allAngleSum;
     public void pie(Graphics g){
          try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String connection_string="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};Dbq=D:\\bhanu\\bhanu.mdb;DriverID=22";
con=DriverManager.getConnection(connection_string);
stmt=con.createStatement();
catch(Exception er){
     System.out.println("could not connect to database"+er);
vc=new Vector();
conVector=new Vector();
try{
     ResultSet res=stmt.executeQuery("select contractor,count(contractor)as totalcon from daily group by contractor");
System.out.println("Result set executed");
while(res.next()){
     String tovector=res.getString("totalcon");
     String contractor=res.getString("contractor");
     conVector.add(contractor);
     int stringToInt=Integer.parseInt(tovector);
     vc.add(stringToInt);
catch(Exception e){
     System.out.println("Result set error"+e);
          Graphics2D g2d=(Graphics2D)g;
          Random generator = new Random();
          g2d.setFont(new Font("Arial",Font.BOLD,15));
     int vectorsize=vc.size();
     for(int i=0;i<vectorsize;i++){
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
     int IntegerToInt=objToInt.intValue();
sum=sum+IntegerToInt;
     int pieAngle=360;
     for(int i=0;i<vectorsize;i++){
     System.out.println("sum is now :"+sum);     
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt);
     allAngleSum=allAngleSum+DivideAngle;
     if(allAngleSum<360){
     double sumCalculate=(360-allAngleSum)/vectorsize;
     for(int i=0;i<vectorsize;i++){
     System.out.println("sum is now :"+sum);     
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt)+sumCalculate;
     Object contractorObj=conVector.elementAt(i);
     String contractor=(String)contractorObj;
     int Rnewcolor=generator.nextInt(255);
     int Gnewcolor=generator.nextInt(255);
     int Bnewcolor=generator.nextInt(255);     
     g2d.setPaint(new Color(Rnewcolor,Gnewcolor,Bnewcolor));
     g2d.fill(new Arc2D.Double( 240, 200, 400, 400, sumAngle,DivideAngle, Arc2D.PIE ) );
     sumAngle=sumAngle+DivideAngle;
     String intToString=Integer.toString(IntegerToInt);
     if(i<7){
     g2d.fill(new Rectangle2D.Double(i*70,50,30,30));
     g2d.drawString(intToString,i*73,100);
     g2d.drawString(contractor,i*73,120);//top horizontal
     else{
          g2d.fill(new Rectangle2D.Double(20,i*40,30,30));
     g2d.drawString(intToString,55,i*42);
          g2d.drawString(contractor,75,i*42);
     if(allAngleSum>360){
     double sumCalculate=(allAngleSum-360)/vectorsize;
     for(int i=0;i<vectorsize;i++){
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt)-sumCalculate;
     Object contractorObj=conVector.elementAt(i);
     String contractor=(String)contractorObj;
     int Rnewcolor=generator.nextInt(255);
     int Gnewcolor=generator.nextInt(255);
     int Bnewcolor=generator.nextInt(255);     
     g2d.setPaint(new Color(Rnewcolor,Gnewcolor,Bnewcolor));
     g2d.fill(new Arc2D.Double( 240, 200, 400, 400, sumAngle,DivideAngle, Arc2D.PIE ) );
     sumAngle=sumAngle+DivideAngle;
     String intToString=Integer.toString(IntegerToInt);
     if(i<7){
     g2d.fill(new Rectangle2D.Double(i*70,50,30,30));
     g2d.drawString(intToString,i*73,100);
     g2d.drawString(contractor,i*73,120);//top horizontal
     else{
          g2d.fill(new Rectangle2D.Double(20,i*40,30,30));
     g2d.drawString(intToString,55,i*42);
          g2d.drawString(contractor,75,i*42);
     sum=0;
     sumAngle=0;
     allAngleSum=0;
     try{
          stmt.close();
          con.close();
     catch(Exception e){
          System.out.println("Could not close connections"+e);
     public void paintComponent(Graphics g){
          super.paintComponent(g);
          pie(g);
}

Answer 1

Can Somebody guide me how to Dynamically labling a pie chart inside or outside of it.Atpresent I am using rectangle color-code for labling at the top and left side of arch2d but its very confusing as the pie segments grows in number .I am submitting my source code for the pie chart for your reference.You are requested to please guide me with some concrete example as soon as possible .Thanks in advanceimport java.io.*;
import java.util.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.*;
import java.util.Random;
import java.sql.*;
import java.math.BigDecimal;
public class pie2d extends JPanel{
     Connection con;
     Statement stmt;
     Vector vc,conVector;
     int arraincrement,sum,pieMinusAngle,IntegerToInt;
     double sumAngle,allAngleSum;
     public void pie(Graphics g){
          try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
String connection_string="jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)};Dbq=D:\\bhanu\\bhanu.mdb;DriverID=22";
con=DriverManager.getConnection(connection_string);
stmt=con.createStatement();
catch(Exception er){
     System.out.println("could not connect to database"+er);
vc=new Vector();
conVector=new Vector();
try{
     ResultSet res=stmt.executeQuery("select contractor,count(contractor)as totalcon from daily group by contractor");
System.out.println("Result set executed");
while(res.next()){
     String tovector=res.getString("totalcon");
     String contractor=res.getString("contractor");
     conVector.add(contractor);
     int stringToInt=Integer.parseInt(tovector);
     vc.add(stringToInt);
catch(Exception e){
     System.out.println("Result set error"+e);
          Graphics2D g2d=(Graphics2D)g;
          Random generator = new Random();
          g2d.setFont(new Font("Arial",Font.BOLD,15));
     int vectorsize=vc.size();
     for(int i=0;i<vectorsize;i++){
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
     int IntegerToInt=objToInt.intValue();
sum=sum+IntegerToInt;
     int pieAngle=360;
     for(int i=0;i<vectorsize;i++){
     System.out.println("sum is now :"+sum);     
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt);
     allAngleSum=allAngleSum+DivideAngle;
     if(allAngleSum<360){
     double sumCalculate=(360-allAngleSum)/vectorsize;
     for(int i=0;i<vectorsize;i++){
     System.out.println("sum is now :"+sum);     
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt)+sumCalculate;
     Object contractorObj=conVector.elementAt(i);
     String contractor=(String)contractorObj;
     int Rnewcolor=generator.nextInt(255);
     int Gnewcolor=generator.nextInt(255);
     int Bnewcolor=generator.nextInt(255);     
     g2d.setPaint(new Color(Rnewcolor,Gnewcolor,Bnewcolor));
     g2d.fill(new Arc2D.Double( 240, 200, 400, 400, sumAngle,DivideAngle, Arc2D.PIE ) );
     sumAngle=sumAngle+DivideAngle;
     String intToString=Integer.toString(IntegerToInt);
     if(i<7){
     g2d.fill(new Rectangle2D.Double(i*70,50,30,30));
     g2d.drawString(intToString,i*73,100);
     g2d.drawString(contractor,i*73,120);//top horizontal
     else{
          g2d.fill(new Rectangle2D.Double(20,i*40,30,30));
     g2d.drawString(intToString,55,i*42);
          g2d.drawString(contractor,75,i*42);
     if(allAngleSum>360){
     double sumCalculate=(allAngleSum-360)/vectorsize;
     for(int i=0;i<vectorsize;i++){
     Object getInt=vc.elementAt(i);
     Integer objToInt=(Integer)getInt;
      IntegerToInt=objToInt.intValue();
     double DivideAngle=(double)((360/sum)*IntegerToInt)-sumCalculate;
     Object contractorObj=conVector.elementAt(i);
     String contractor=(String)contractorObj;
     int Rnewcolor=generator.nextInt(255);
     int Gnewcolor=generator.nextInt(255);
     int Bnewcolor=generator.nextInt(255);     
     g2d.setPaint(new Color(Rnewcolor,Gnewcolor,Bnewcolor));
     g2d.fill(new Arc2D.Double( 240, 200, 400, 400, sumAngle,DivideAngle, Arc2D.PIE ) );
     sumAngle=sumAngle+DivideAngle;
     String intToString=Integer.toString(IntegerToInt);
     if(i<7){
     g2d.fill(new Rectangle2D.Double(i*70,50,30,30));
     g2d.drawString(intToString,i*73,100);
     g2d.drawString(contractor,i*73,120);//top horizontal
     else{
          g2d.fill(new Rectangle2D.Double(20,i*40,30,30));
     g2d.drawString(intToString,55,i*42);
          g2d.drawString(contractor,75,i*42);
     sum=0;
     sumAngle=0;
     allAngleSum=0;
     try{
          stmt.close();
          con.close();
     catch(Exception e){
          System.out.println("Could not close connections"+e);
     public void paintComponent(Graphics g){
          super.paintComponent(g);
          pie(g);
}