laba2

public class AccessExample {
    public static void main(String[] args) {
        // обращение к полям с разными режимами доступа
        Cube c = new Cube(5,4,3);
        c.print();
        System.out.println(c.width);
        System.out.println(c.depth);
    }
}

public class Chair extends Object {
    private String color;
    String material;
    double age;
    public Chair(String material, double age, String color) {
        this.material = material;
        this.age = age;
        this.color = color;
    }
    @Override
    public String toString()  {
        System.out.println("color: "+this.color + ", material: " + this.material + ", age: " + this.age);
        return "";
    }
}

public class Cube {
    public double width;
    private double height;
    protected double depth;
    public Cube(double width, double height, double depth) {
        this.width = width;
        this.height = height;
        this.depth = depth;
    }
    public void print(){ System.out.println(this.width + " | " +
                        this.height +" | "
                        + this.depth);
    }
}

public class Furniture {
    static String material;
    double age;
    public Furniture() {}
    public Furniture(String material, double age) {
        this.material = material;
        this.age = age;
    }
    public void print() {
        System.out.println("Furniture: ");
        System.out.println("material: " +
        this.material + "; age: " + this.age);
    }
}

public class InheritanceExample {
    public static void main(String[] args){
        Furniture furniture = new Furniture("wood",2.5);
        furniture.print();
        Chair chair = new Chair("aluminum", 1.3, "beige");
        System.out.println(chair.material);
        chair.toString();
    }
}

public class OverloadExample {
    public static void main(String[] args) {
        Plant p1 = new Plant();
        Plant p2 = new Plant("tulip", "red");
        Plant p3 = new Plant("cactus");
        Plant p4 = new Plant("rose", "white", "Holland", false);
        p1.print();
        p2.print();
        p3.print();
        p4.print();
    }
}

public class Plant {
    private String type;
    private String color;
    private String existenceArea;
    private Boolean rare;
    public Plant() {}
    public Plant(String type, String color) {
        this.type = type;
        this.color = color;
}
    public Plant(String type) {
        this.type = type;
        }
    public Plant(String type, String color, String existenceArea) {
        this.type = type;
        this.color = color;
        this.existenceArea = existenceArea;
    }
    public Plant(String type, String color, String existenceArea, Boolean rare) {
        this.type = type;
        this.color = color;
        this.existenceArea = existenceArea;
        this.rare = rare;
    }
    public void print(){
        System.out.println("type: " + this.type + "; color: " + this.color + "; existing area " + this.existenceArea + "; rare " + this.rare);
    }
}

public class Spy {
    public String name;
    private String realName;
    private Integer squad;
    private void getSpyInfo(){
        System.out.println(this.realName + " " + this.squad);
    }
    public void print(){
        System.out.println(this.name);
    }
    public void setName(String name){
        this.name = name;
    }
    public void setRealName(String realName){
        this.realName = realName;
    }
    public void setSquad(Integer squad){
        this.squad = squad;
    }
    public String getName(){
        return this.name;
    }
    public String getRealName(){
        return this.realName;
    }
    public Integer getSquad(){
        return this.squad;
    }
}
public class SpyAccess {
    public static void main(String[] args) {
        Spy spy = new Spy();
        spy.setName("James");
        spy.setRealName("James Bond");
        spy.setSquad(7);
        spy.print();
        // spy.getSpyInfo(); вызовет ошибку
        System.out.println(spy.getName());
        System.out.println(spy.getRealName());
        System.out.println(spy.getSquad());
        System.out.println(spy.name);
        //System.out.println(spy.squad); вызовет ошибку
        //System.out.println(spy.realName); вызовет ошибку
    }
}

public class StaticCheck {
    public static void main(String[] args) {
        while (true){
            StaticContainer.operation();
            if (StaticContainer.counter > 100){
                System.out.println(StaticContainer.counter);
                break;
            }
        }
    }
}

public class StaticContainer {
    static Integer counter = 0;
    public static void operation(){
        counter +=3;
    }
}

public class StaticExample {
    static int result;
    public static void main(String[] args){
        int[] array = {-3, 20, 5, 16, 27};
        for (int value: array) {
            result = (value % 4 == 0) ? 1 : 0;
            System.out.println(result);
        }
        Triangle t1 = new Triangle(3);
        Triangle t2 = new Triangle(4);
        Triangle.checkTriangles(t1,t2);
    }
}

public class Triangle {
    public double side; // сторона
    public Triangle(double side) {
        this.side = side;
    }

    public double area(){
        return(Math.sqrt(3)/4)*Math.pow(this.side,2);
    }
    public static void checkTriangles(Triangle triangle1, Triangle triangle2) {
        double area1 = triangle1.area();
        double area2 = triangle2.area();
        if (area1 == area2) {
            System.out.println("Треугольники равны");
        }
        else if (area1 > area2) {
            System.out.println("Первый     треугольник больше второго");
        }
        else {System.out.println("Второй треугольник больше первого");
        }
    }
}