car.java

程序练习中包括书中实例程序代码和练习中要用到的代码,是压缩文件

package examples.inheritance;

/** A class used to demonstrate inheritance concepts
  */
public class Car extends Vehicle {

   private static final int NUMBER_OF_WHEELS = 4;

   private int passengers;

   /** Class constructor
     * @param p number of passengers
     * @param r range in kilometers
     */
   public Car( int p, int r ) {
      super( NUMBER_OF_WHEELS, r );
      passengers = p;
   }

   /** Represent the object as a string
     * @return The object as a String
     */
   public String toString() {
      return( super.toString() + " Passengers: "
              + passengers );
   }
}