mechanic2.java

java2 primer plus一书源程序

public class Mechanic2
{
    public void service( Serviceable s )
    {
        s.changeOil();
        s.tuneUp();
    }

    public static void main( String[] args )
    {
        Porsche porsche = new Porsche();
        Pinto pinto = new Pinto();
        Mechanic1 mechanic = new Mechanic1();
        mechanic.service( porsche );
        mechanic.service( pinto );
    }
}