// Fig. 10.10: AbstractInheritanceTest.java
// Driver for shape, point, circle, cylinder hierarchy.
import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class AbstractInheritanceTest {

  public static void main( String args[] )
  {
    // set floating-point number format
    DecimalFormat twoDigits = new DecimalFormat( "0.00" );

    // create Point, Circle and Cylinder objects
    PointAsShape point = new PointAsShape( 7, 11 );
    CircleAsShape circle = new CircleAsShape( 22, 8, 3.5 );
    CylinderAsShape cylinder = new CylinderAsShape( 20, 30, 3.3, 10.75 );

    // obtain name and string representation of each object
    String output = point.getName() + ": " + point + "\n" +
                    circle.getName() + ": " + circle + "\n" +
                    cylinder.getName() + ": " + cylinder + "\n";

    Shape arrayOfShapes[] = new Shape[ 3 ];  // create Shape array

    // aim arrayOfShapes[ 0 ] at subclass Point object
    arrayOfShapes[ 0 ] = point;

    // aim arrayOfShapes[ 1 ] at subclass Circle object
    arrayOfShapes[ 1 ] = circle;

    // aim arrayOfShapes[ 2 ] at subclass Cylinder object
    arrayOfShapes[ 2 ] = cylinder;

    // loop through arrayOfShapes to get name, string
    // representation, area and volume of every Shape in array
    for ( int i = 0; i < arrayOfShapes.length; i++ ) {
      output += "\n\n" + arrayOfShapes[ i ].getName() + ": " +
                  arrayOfShapes[ i ].toString() + "\nArea = " +
                  twoDigits.format( arrayOfShapes[ i ].getArea() ) +
                  "\nVolume = " +
                  twoDigits.format( arrayOfShapes[ i ].getVolume() );
    }

    JOptionPane.showMessageDialog( null, output );  // display output

    System.exit( 0 );

  } // end main

} // end class AbstractInheritanceTest