circletest3.java

来自「Java Application, Circle test」· Java 代码 · 共 46 行

package Project1;
import java.text.DecimalFormat;
import javax.swing.JOptionPane;

public class CircleTest3 {

   public static void main( String[] args )
   {
      // instantiate Circle object
      LineClass line = new LineClass( 37, 43, 2.5 );

      // get Circle3's initial x-y coordinates and radius
      String output = "X coordinate is " + circle.getX() +
         "\nY coordinate is " + circle.getY() +
         "\nRadius is " + circle.getRadius();

      circle.setX( 35 );         // set new x-coordinate
      circle.setY( 20 );         // set new y-coordinate
      circle.setRadius( 4.25 );  // set new radius

      // get String representation of new circle value
      output += "\n\nThe new location and radius of circle are\n" +
         circle.toString();

      // format floating-point values with 2 digits of precision
      DecimalFormat twoDigits = new DecimalFormat( "0.00" );

      // get Circle's diameter
      output += "\nDiameter is " +
         twoDigits.format( circle.getDiameter() );

      // get Circle's circumference
      output += "\nCircumference is " +
         twoDigits.format( circle.getCircumference() );

      // get Circle's area
      output += "\nArea is " + twoDigits.format( circle.getArea() );

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

      System.exit( 0 );

   } // end method main

} // end class CircleTest3