// Fig. 9.16: CylinderTest.java // Testing class Cylinder. import java.text.DecimalFormat; import javax.swing.JOptionPane; public class CylinderTest { public static void main( String[] args ) { // create Cylinder object Cylinder cylinder = new Cylinder( 12, 23, 2.5, 5.7 ); // get Cylinder's initial x-y coordinates, radius and height String output = "X coordinate is " + cylinder.getX() + "\nY coordinate is " + cylinder.getY() + "\nRadius is " + cylinder.getRadius() + "\nHeight is " + cylinder.getHeight(); cylinder.setX( 35 ); // set new x-coordinate cylinder.setY( 20 ); // set new y-coordinate cylinder.setRadius( 4.25 ); // set new radius cylinder.setHeight( 10.75 ); // set new height // get String representation of new cylinder value output += "\n\nThe new location, radius and height of cylinder are\n" + cylinder.toString(); // format floating-point values with 2 digits of precision DecimalFormat twoDigits = new DecimalFormat( "0.00" ); // get Cylinder's diameter output += "\n\nDiameter is " + twoDigits.format( cylinder.getDiameter() ); // get Cylinder's circumference output += "\nCircumference is " + twoDigits.format( cylinder.getCircumference() ); // get Cylinder's area output += "\nArea is " + twoDigits.format( cylinder.getArea() ); // get Cylinder's volume output += "\nVolume is " + twoDigits.format( cylinder.getVolume() ); JOptionPane.showMessageDialog( null, output ); // display output System.exit( 0 ); } // end main } // end class CylinderTest