Hier ist mein aktualisierter Code:

package car1;

public class Main

public static void main (String [] args)

Klasse HondaCivic implementiert Auto1

int speed = 0;
int rpm = 0;
int gear = 1;

public void speedUp(int Increment) {
    speed = speed + Increment;}

public void applyBrakes(int Decrement) {
    speed = speed - Decrement;}

public void changeRpm(int NewValue) {
    rpm = NewValue;}

public void changeGear(int NewValue) {
    gear = NewValue;}

public void printStates() {
    System.out.println("speed:"+speed+" rpm:"+rpm+" gear:"+gear);}

}

class CarDemo{
public void main(String[] args) {
    // Two different Cars
    HondaCivic car1 = new HondaCivic();
    HondaCivic car2 = new HondaCivic();
    // Methods for cars
    car1.speedUp(30);
    car1.changeGear(3);
    car1.changeRpm(3000);
    car1.applyBrakes(15);
    car1.printStates();

    car2.speedUp(30);
    car2.changeGear(3);
    car2.changeRpm(2000);
    car2.applyBrakes(15);
    car2.speedUp(5);
    car2.changeGear(1);
    car2.printStates();
}

}}}

Die Anwendung zeigt die Ausgabe nicht an. Ich habe keine Ahnung, was ich tun soll. Irgendein Rat