import java.awt.*;
public class MeterCanvas extends Canvas {
 String title = "Title to be Supplied";
 int minValue = 0, maxValue = 30, value = 15;
 public void paint(Graphics g) {
  // Set color:
  g.setColor(Color.blue);       
  // Obtain Dimension instance and draw:
  Dimension d = size(); 
  int meterWidth = d.width * 3 / 4;
  int dialPosition
   = meterWidth * (value - minValue) / (maxValue - minValue);
  int xOrigin = (d.width - meterWidth) / 2; 
  int yOrigin = d.height / 2;
  g.drawLine(xOrigin, yOrigin, xOrigin + meterWidth, yOrigin);
  g.drawLine(xOrigin + dialPosition, yOrigin,
             xOrigin + dialPosition, yOrigin - 10);
 }
 public Dimension minimumSize() {return new Dimension(150, 100);}
 public Dimension preferredSize() {return new Dimension(150, 100);}     
}