Car class

package tester1;

public class Car {

    private int number, speed;

    public int getNumber() {
        return number;
    }

    public void setNumber(int n) {
        number = n;
    }

    public int getSpeed() {
        return speed;
    }

    public void increase() {
        speed++;
        }

    public void decrease() {
        speed--;
        }
    public void stop() {
        speed=0;
        }

    public void print() {
        System.out.println("your car number is: "+number);
        System.out.println("your speed is: " + speed);
    }

}