package com.zetcode;

import java.util.HashSet;

import java.util.Objects;

import java.util.Set;

// Generic method

class Car {

private String name;

private int price;

public Car(String name, int price) {

this.name = name;

this.price = price;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public int getPrice() {

return price;

}

public void setPrice(int price) {

this.price = price;

}

@Override

public String toString() {

return "Car{" + "name=" + name + ", price=" + price + '}';

}

@Override

public int hashCode() {

int hash = 5;

hash = 79 * hash + Objects.hashCode(this.name);

hash = 79 * hash + this.price;

return hash;

}

@Override

public boolean equals(Object obj) {

if (this == obj) {

return true;

}

if (obj == null) {

return false;

}

if (getClass() != obj.getClass()) {

return false;

}

final Car other = (Car) obj;

if (this.price != other.price) {

return false;

}

return Objects.equals(this.name, other.name);

}

}

public class GenericMethodEx {

public static void main(String[] args) {

Set<String> words = new HashSet<>();

words.add("blue");

words.add("pen");

words.add("dog");

words.add("narrow");

Set<String> words2 = new HashSet<>();

words.add("blue");

words.add("pencil");

words.add("forest");

words.add("narrow");

Set<String> res = union(words, words2);

System.out.println(res);

Set<Car> cars = new HashSet<>();

cars.add(new Car("Volvo", 23144));

cars.add(new Car("Mazda", 20500));

cars.add(new Car("Mercedes", 50000));

Set<Car> cars2 = new HashSet<>();

cars.add(new Car("Volvo", 23144));

cars.add(new Car("Mazda", 20500));

cars.add(new Car("Skoda", 9800));

Set<Car> res2 = union(cars, cars2);

res2.forEach(System.out::println);

}

public static <E> Set<E> union(Set<E> s1, Set<E> s2) {

Set<E> result = new HashSet<>(s1);

result.addAll(s2);

return result;

}

}