5.02 Java example gasoline detection

package woxihuan;

public  class Car {
             // Car fuel monitoring system
             // Define a class Car
             // Car: brand, average fuel consumption, mailbox capacity
             // What brand of car traveled how many kilometers, how many L of gasoline consumed, how many L left in the mailbox
         // get 
        public Car(String _name, Double _sal, int _volume, Double _distance) {
            name = _name;
            salt = _salt;
            volume = _volume;
            distance = _distance;
            operation = sal * distance;
            operation1 = volume - operation;
        }
        //set
        public Car() {
            name = " Audi " ;
            sal = 13.5 ;
            volume = 90;
            distance = 1.5;
            operation = sal * distance;
            operation1 = volume - operation;
            
        }
        
        private String name; // Brand 
        private  double sal; // Fuel consumption 
        private  int volume; // Capacity 
        private  double distance; // How many kilometers traveled 
        private  double operation; // Calculation consumption of gasoline 
        private  double operation1; // Calculation fuel tank remaining How many
        
        public void result() {System.out 
            .println (name + " Driving " + distance + " km, gas consumption: " + operation + " L, fuel tank remaining: " + operation1 + " L. " );
        }
        
        public String getName() {
            return name;
        }
        public void setName(String name) {
            this.name = name;
        }
}

package woxihuan;

public  class What {

    public static void main(String[] args) {
        //get
        Car e = new Car("奥迪a3" ,8.2 , 55 ,2.6);
        e.result();
        
        //set
        Car e2 = new Car();
        e2.setName( " Audi r8 " );
        e2.result();
        
                

    }

}