Hi Friend,

For Bar Chart and Pie Chart, please visit the following links:

http://www.roseindia.net/java/example/java/swing/draw-simple-bar-chart.shtml

http://www.roseindia.net/java/example/java/swing/draw-pie-chart.shtml

continue................

To draw Line Chart, try the following code:

import java.awt.*;
import java.awt.font.*;
import java.awt.geom.*;
import javax.swing.*;

public class LineGraph extends JPanel {
double[] data = { 10,8, 7, 6, 6, 4, 12, 8 };
final int space = 20;
final int yspace = 3;

protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
draw(g2);
Point2D.Double point = null;
for(int j = 0; j < data.length; j++) {
g2.setPaint(Color.red);
Point2D.Double p2d = view(j, data[j]);
g2.fill(new Ellipse2D.Double(p2d.x-2, p2d.y-2, 4, 4));
if(point != null) {
g2.setPaint(Color.red);
g2.draw(new Line2D.Double(point, p2d));
}
point = p2d;
}
}
private Point2D.Double view(double x, double y) {
double w = getWidth();
double h = getHeight();
double tx = space;
double ty = h-space;
AffineTransform at = AffineTransform.getTranslateInstance(tx, ty);
double xScale = (w - 2*space)/(data.length-1);
int max = (int)Math.ceil(getValue());
double yScale = (h - 2*space)/max;
at.scale(xScale, -yScale);
Point2D.Double point2d = new Point2D.Double();
at.transform(new Point2D.Double(x, y), point2d);
return point2d;
}
private void draw(Graphics2D g2) {
double w = getWidth();
double h = getHeight();
double xaxis = (w - 2*space)/(data.length-1);
int max = (int)Math.ceil(getValue());
double yaxis = (h - 2*space)/max;
g2.setPaint(new Color(220,230,240));
for(int j = 0; j <= data.length; j++) {
double x = space + j*xaxis;
g2.draw(new Line2D.Double(x, space, x, h-space));
}
for(int j = 0; j <= max; j++) {
double y = space + j*yaxis;
g2.draw(new Line2D.Double(space, y, w-space, y));
}
g2.setPaint(new Color(51,51,51));
g2.draw(new Line2D.Double(space, space, space, h-space));
for(int j = 0; j <= max; j++) {
double y = space + j*yaxis;
g2.draw(new Line2D.Double(space, y, space, y));
}
Font font = g2.getFont().deriveFont(14f);
g2.setFont(font);
FontRenderContext fontContext = g2.getFontRenderContext();
LineMetrics lm = font.getLineMetrics("0", fontContext);
for(int j = 0; j <= max; j++) {
String s = String.valueOf(max-j);
float y = (float)(space + j*yaxis + lm.getDescent());
float width = (float)font.getStringBounds(s, fontContext).getWidth();
float x = (float)(space - yspace - width);
g2.drawString(s, x, y);
}
g2.draw(new Line2D.Double(space, h-space, w-space, h-space));
for(int j = 0; j <= data.length; j++) {
double x = space + j*xaxis;
g2.draw(new Line2D.Double(x, h-space, x, h-space));
}
for(int j = 0; j <= data.length; j++) {
String s = String.valueOf(j);
float width = (float)font.getStringBounds(s, fontContext).getWidth();
float x = (float)(space + j*xaxis - width/2);
float y = (float)(h-space + yspace + lm.getAscent());
g2.drawString(s, x, y);
}
}

continue.....

private double getValue() {
double max = -Double.MAX_VALUE;
for(int j = 0; j < data.length; j++) {
if(data[j] > max)
max = data[j];
}
return max;
}
public static void main(String[] args) {
JFrame f = new JFrame("Line Chart");
f.getContentPane().add(new LineGraph());
f.setSize(400,400);
f.setLocation(200,200);
f.setVisible(true);
}
}

To draw the above charts using JFreeChart,please visit the following link:

http://www.roseindia.net/chartgraphs/index.shtml

Thanks