2.6.2

public abstract class Figure {
    private float x;
    private float y;

    public Figure(float x, float y) {
        this.x = x;
        this.y = y;
    }

    public void setY(float y) {
        this.y = y;
    }

    public void setX(float x) {
        this.x = x;
    }

    public float getY() {
        return y;
    }

    public float getX() {
        return x;
    }

    public abstract float getArea();

    public abstract float getPerimeter();
}

public class Rectangle extends Figure implements Moveable {
    private float height;
    private float width;

    public Rectangle(float x, float y, float height, float width) {
        super(x, y);
        this.height = height;
        this.width = width;
    }

    @Override
    public float getArea() {
        return this.height * this.width;
    }

    @Override
    public float getPerimeter() {
        return 2*(this.width + this.height);
    }

    @Override
    public void move(float dx, float dy) {
        this.setX(this.getX()+dx);
        this.setY(this.getY()+dy);
    }

    @Override
    public void resize(float koeff) {
        this.height *= koeff;
        this.width *= koeff;
    }

    @Override
    public String toString() {
        return "Rectangle\n" +
                "Center: (" + (this.getX() + this.width/2) + ", " + (this.getY() + this.height/2) + ")\n" +
                "Height: " + this.height + "\n" +
                "Width: " + this.width;

    }
}

public class Circle extends Figure implements Moveable {
    private float radius;
    private static final float pi = (float)Math.PI;

    public Circle(float x, float y, float radius) {
        super(x, y);
        this.radius = radius;
    }

    @Override
    public float getArea() {
        return pi * radius * radius;
    }

    @Override
    public float getPerimeter() {
        return 2 * pi * radius;
    }

    @Override
    public void move(float dx, float dy) {
        this.setX(this.getX()+dx);
        this.setY(this.getY()+dy);
    }

    @Override
    public void resize(float koeff) {
        this.radius *= koeff;
    }

    @Override
    public String toString() {
        return "Circle\n" +
        "Center: (" + this.getX() + ", " + this.getY() + ")\n" +
        "Radius: " + this.radius;
    }
}

public interface Moveable {
    void move(float dx, float dy);

    void resize(float koeff);
}