package test01;
abstract public class Car{
　protected double gas;//private double gas;
　public Car(){
　　gas = 0.0;
　}
　public void setGas( double g ){
　　gas = g;
　}
　abstract public void show();
}
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package test02;
public class RealCar extends test01.Car{
　public void show(){
　　System.out.println( "ガスは" + gas );
　}
}
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class meinnHoge{
　static public void main( String[] args ){
　　test02.RealCar car = new test02.RealCar();
　　car.show();
　}
}