private String modelName;

    private int modelYear;

    private String color;

    private int maxSpeed;

    private int currentSpeed;

​

    {   // 인스턴스 초기화 블록

        this.currentSpeed = 0;

    }

    Car() {}

    Car(String modelName, int modelYear, String color, int maxSpeed) {

        this.modelName = modelName;

        this.modelYear = modelYear;

        this.color = color;

        this.maxSpeed = maxSpeed;

    }

    public int getSpeed() {

        return currentSpeed;

    }

}

​

public class prog {

    public static void main(String[] args) {

        Car myCar = new Car();                  // 인스턴스 생성

        System.out.println(myCar.getSpeed());   // 인스턴스 메소드의 호출

    }

}