P0huber

package com.javarush.task.task13.task1314;

import java.awt.*;
import static java.awt.Color.GRAY;

/* 
Большая лисица — это такая лисица
*/

public class Correct {

P0huber

public class MultipleInheritance {
    public static void main(String[] args) throws Exception {}

    interface Person {
        void use(Person person);
        void startToWork();}

    interface Workable {
        boolean wantsToGetExtraWork();}

P0huber

public class BeerInBar {
    public static void main(String[] args) throws Exception {}

    public interface Drink {
        void askMore(String message);
        void sayThankYou();
        boolean isReadyToGoHome();}

    public interface Alcohol extends Drink {
        boolean READY_TO_GO_HOME = false;

P0huber

public class MinAndIndex {
    public static void main(String[] args) throws Exception {
        int[] data = new int[]{1, 2, 3, 5, -2, -8, 0, 77, 5, 5};
        Pair<Integer, Integer> result = getMinimumAndIndex(data);
        System.out.println("Minimum is " + result.x);
        System.out.println("Index of minimum element is " + result.y);}

    public static Pair<Integer, Integer> getMinimumAndIndex(int[] array) {
        if (array == null || array.length == 0) {
            return new Pair<Integer, Integer>(null, null);}

P0huber

public class Implementation {
    public static void main(String[] args) {}

    public interface Fly {
        public void fly();}
    public interface Move {
        public void move();}
    public interface Eat {
        public void eat();}

P0huber

public class InheritanceFromAbstractClass {
    public static void main(String[] args) {}

    public static abstract class Pet {
        public abstract String getName();
        public abstract Pet getChild();}

    public static class Cat extends Pet{ // inheritance from abstract class and implementations of methods
        public String getName(){return "Timmy";}
        public Pet getChild(){return new Cat();}}

P0huber

public class AbstractWork {
    public static void main(String[] args) {}

    public static abstract class Animal {  // is subclassed by class Cow
        public abstract String getName();} // is implemented in class Cow

    public static class Cow extends Animal{ // class inheritance occurs
        public String getName(){
            return "I`m a cow Marry almost :)";} // the implementation occurs
    }

P0huber

public class ThreeMAX {
    public static void main(String[] args) {

    }
    public static int max(int a, int b){return Math.max(a, b);}
    public static long max(long a, long b){return Math.max(a, b);}
    public static double max(double a, double b){return (a > b)? a : b;}
}
/*Три метода и максимум
Написать public static методы: int max(int, int), long max(long, long), double max(double, double).

P0huber

public class MethodOverloading {
    public static void main(String[] args) {
        Integer b = 1000;
        print(10);
        print(b); // method overloading with Integer parameter
    }
    public static void print(int a){}
    public static void print(Integer b){}
}
/*Int и Integer

P0huber

public class PolymorphismInstanceof {
    public static void main(String[] args) {
        System.out.println(getObjectType(new Cow()));
        System.out.println(getObjectType(new Dog()));
        System.out.println(getObjectType(new Whale()));
        System.out.println(getObjectType(new Pig()));}

    public static String getObjectType(Object o) {
        if(o instanceof Cow) return "Корова"; // we`re checking "o" instances of "Cow" or no
        if (o instanceof Dog) return "Собака";