HomeWork(OOP)Наследование

Figures.java

public abstract class Shape {
    
    public abstract double getPerimetr();
    public abstract double getArea();
    
}

public class Point {
    
    private double x;
    private double y;

    public Point(double x, double y) {
        this.x = x;
        this.y = y;
    }
    
    public Point() {
        super();
    }

    public double getX() {
        return x;
    }

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

    public double getY() {
        return y;
    }

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

    @Override
    public String toString() {
        return "Point{" + "x=" + x + ", y=" + y + '}';
    }
    
}

public class Triangle extends Shape {
    
    private Point a;
    private Point b;
    private Point c;

    public Triangle(Point a, Point b, Point c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }
    
    public Triangle() {
        super();
    }

    @Override
    public double getPerimetr() {
        double aB = (Math.sqrt((a.getX() * a.getX()) + (a.getY() + a.getY())));
        double aC = (Math.sqrt((b.getX() * b.getX()) + (b.getY() + b.getY())));
        double bC = (Math.sqrt((c.getX() * c.getX()) + (c.getY() + c.getY())));
        return aB + aC + bC;
    }

    @Override
    public double getArea() {
        double aB = (Math.sqrt((a.getX() * a.getX()) + (a.getY() + a.getY())));
        double aC = (Math.sqrt((b.getX() * b.getX()) + (b.getY() + b.getY())));
        double bC = (Math.sqrt((c.getX() * c.getX()) + (c.getY() + c.getY())));
        double poluP = (aB + aC + bC) / 2;
        return Math.sqrt(poluP * (poluP - aB) * (poluP - aC) * (poluP - bC));
    }

    @Override
    public String toString() {
        return "Triangle{" + "a=" + a + ", b=" + b + ", c=" + c + '}';
    }
    
}

public class Circle extends Shape {
    
    private Point a;
    private Point b;

    public Circle(Point a, Point b) {
        this.a = a;
        this.b = b;
    }
    
    public Circle() {
        super();
    }
    
    @Override
    public double getPerimetr() {
        double radius = Math.sqrt(((b.getX() * b.getX()) - (a.getX() * a.getX())) + ((b.getY() + b.getY()) - (a.getY() * a.getY())));
        return 2 * Math.PI * radius;
    }

    @Override
    public double getArea() {
        double radius = Math.sqrt(((b.getX() * b.getX()) - (a.getX() * a.getX())) + ((b.getY() + b.getY()) - (a.getY() * a.getY())));
        return Math.PI * Math.pow(radius, 2);
    }

    @Override
    public String toString() {
        return "Circle{" + "a=" + a + ", b=" + b + '}';
    }
    
}

public class Square extends Shape {
    
    private Point a;
    private Point b;
    private Point c;

    public Square(Point a, Point b, Point c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }
    
    public Square() {
        super();
    }

    @Override
    public double getPerimetr() {
        double aB = (Math.sqrt((a.getX() * a.getX()) + (a.getY() + a.getY())));
        double aC = (Math.sqrt((b.getX() * b.getX()) + (b.getY() + b.getY())));
        double cD = aB;
        double bD = aC;
        return aB + aC + cD + bD;
    }

    @Override
    public double getArea() {
        double aB = (Math.sqrt((a.getX() * a.getX()) + (a.getY() + a.getY())));
        double aC = (Math.sqrt((b.getX() * b.getX()) + (b.getY() + b.getY())));
        double cD = aB;
        double bD = aC;
        return aB * aC;
    }

    @Override
    public String toString() {
        return "Square{" + "a=" + a + ", b=" + b + ", c=" + c + '}';
    }
    
}

import java.util.Arrays;

/**
 *
 * @author kamaz
 */
public class Board {
    
    private Shape[] dc = new Shape[4];
    
    public Board(Shape[] dc) {
        this.dc = dc;
    }

    public Board() {
        super();
    }

    public Shape[] getDc() {
        return dc;
    }

    public void setDc(Shape[] dc) {
        this.dc = dc;
    }
    
    public void setFigure(Shape sp, int index) {
        for(int i = 0; i < dc.length; i++) {
            if((i == index) && (dc[i] == null)) {
                dc[i] = sp;
                System.out.println("Figure: " + sp + " in index: " + i );
            } 
            else if ((i == index) && (dc[i] != null)){
                System.out.println(i + " ячейка занята другой фигурой");
            }
        }
    }
    
    public void deleteFigure(Shape sp, int index) {
        for(int i = 0; i < dc.length; i++) {
            if((i == index) && (dc[i] != null)) {
                dc[i] = null;
                System.out.println("Фигура удалена из ячейки");
            } else if ((i == index) && (dc[i] == null)) {
                System.out.println("Удалять нечего");
            }
        }
    }
    
    public void setAllFigures(Shape sp) {
        for(int i = 0; i < dc.length; i++) {
            if(dc[i] == null) {
                dc[i] = sp;
                if(i == 3) {
                    System.out.println("Ячейки заполнены фигурами");
                }
            break;
            }
        }
    }
    
    public void deleteAllFifures() {
        for(int i = 0; i < dc.length; i++) {
            if(dc[i] != null) {
                dc[i] = null;
                    if(i == 3) {
                    System.out.println("Фигуры удалены");
                    }
            }
        }
    }
    
    public void getInfoFigure() {
        for(int i = 0; i < dc.length; i++) {
            if(dc[i] != null) {
                System.out.println(dc[i] + " размещена в ячейке " + i);
                System.out.println("Площадь фигуры: " + dc[i].getArea());
                System.out.println("Периметр фигуры: " + dc[i].getPerimetr());
            }
        }
    }
    
    public void getSummPerimetr() {
        double n = 0;
        for(int i = 0; i < dc.length; i++) {
            if(dc[i] != null) {
                n += dc[i].getPerimetr();
            }
        }
        System.out.println("Сумма периметров: " + n);
    }
    
    public void getSummArea() {
        double n = 0;
        for(int i = 0; i < dc.length; i++) {
            if(dc[i] != null) {
                n += dc[i].getArea();
            }
        }
        System.out.println("Сумма площадей: " + n);
    }

    @Override
    public String toString() {
        return "Board{" + "dc=" + Arrays.toString(dc) + '}';
    }
    
}


public class Main {
    
    public static void main(String[] args) {
        
        Point a = new Point(5, 3);
        Point b = new Point(6, 6);
        Point c = new Point(2, 7);
        
        Triangle f = new Triangle(a, b, c);
        
        Circle g = new Circle(a, b);
        
        Square h = new Square(a, b, c);
        
        System.out.println(h.getArea());
        System.out.println(h.getPerimetr());
        System.out.println(h);
        System.out.println("---------------");
        
        System.out.println(g.getArea());
        System.out.println(g.getPerimetr());
        System.out.println(g);
        System.out.println("---------------");
        
        System.out.println(f.getPerimetr());
        System.out.println(f.getArea());
        System.out.println(f);
        System.out.println("---------------");
        
        Board br = new Board();
        br.setFigure(f, 1);
        br.setFigure(g, 0);
        System.out.println(br);
        System.out.println("---------------ff");
        
        Board dr = new Board();
        dr.setAllFigures(h);
        dr.setAllFigures(f);
        dr.setAllFigures(g);
        dr.setAllFigures(h);
        System.out.println(dr);
        System.out.println("---------------");
        
        dr.getInfoFigure();
        System.out.println(dr);
        System.out.println("---------------");
        
        dr.getSummArea();
        System.out.println(dr);
        System.out.println("---------------");
        
        dr.getSummPerimetr();
        System.out.println(dr);
        System.out.println("---------------");
        
        dr.deleteAllFifures();
        dr.deleteAllFifures();
        dr.deleteAllFifures();
        dr.deleteAllFifures();
        System.out.println(dr);
    }
    
}