Class Definition

Here is the miles per gallon program. Both the class Car and the testing class MilesPerGallon are in the same source file, so you don't need to say import Car like the previous page did. To keep the program short, user interaction has been left out.

import java.io.* ;

class Car
{
  // instance variables


  // constructor


  // methods

}

class MilesPerGallon
{
  public static void main( String[] args ) 
  {
    Car car = new Car( 32456, 32810, 10.6 );
    System.out.println( "Miles per gallon is " + car.calculateMPG() );
  }
}

The source file must be named MilesPerGallon.java after the name of the class that contains main().