7/23 실습(Generics)

<문제>

1. Customer (고객)

- 속성: private String name, private int age, private int point

, private ArrayList orders

- 생성자:

Customer (Sting location, int age, int point)

 

2. SpecialCustomer extends Customer

- 속성: private int bonus

 

3. Order

- 속성: private int orderNo, private String product, private String orderDt

- 생성자:

Order(int orderNo, String product, Date orderDt)

 

4. SpecialOrder extends Order

- 속성: private String gift(사은품)

---

// Order 자식만 사용가능

Customer> c1 = new Customer<>("홍길동", 30, 100);

Order o = new Order(1234, "정보보호론", "2019-07-01");

c1.addOrders(o);

 

// SpecialOrder만 선택가능

SpecialCustomer<SpecialOrder> c2 = new SpecialCustomer<>("김길동", 31, 150, 50);

SpecialOrder so = new SpecialOrder(1234, "정보보호론", "2019-07-01", "각티슈");

c2.addOrders(so);

 

ArrayList al = new ArrayList();

 

al.add(c1);

al.add(c2);

 

// Point로 Custoer 정렬, SpecialCustomer는 bonus를 더해준다

Collections.sort(al);

package Day190723;

import java.sql.Date;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;

class Customer<T extends Order> implements Comparable<Customer>{
	private String name;
	private int age;
	protected int point;
	private ArrayList orders = new ArrayList();

	Customer(String name, int age, int point){
		this.name = name;
		this.age = age;
		this.point = point;
	}
	
	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public int getPoint() {
		return point;
	}

	public void setPoint(int point) {
		this.point = point;
	}
	
	public ArrayList getOrders() {
		return orders;
	}

	public void setOrders(ArrayList orders) {
		this.orders = orders;
	}
	
	public void addOrders(Order o) {
		orders.add(o);
		
	}

	@Override
	public int compareTo(Customer o) {
		System.out.println("비교 - Customer" + this.name);
		int thisTotPoint = this.point;
		int paramTotPoint = 0;
		
		if(o instanceof SpecialCustomer) {
			paramTotPoint = o.getPoint() + ((SpecialCustomer)o).getBonus();
		}else {
			paramTotPoint = o.getPoint();
		}
		
		if(thisTotPoint < paramTotPoint) {
			return -1;
		}else if(thisTotPoint > paramTotPoint) {
			return 1;
		}
		return 0;
	}
	
	public String toString() {
		return name + "/" + age + "/" + point;
	}
	
}

class SpecialCustomer<T extends SpecialOrder> extends Customer<T>{
	private int bonus;

	SpecialCustomer(String name, int age, int point, int bonus){
		super(name, age, point);
		this.bonus = bonus;
	}
	
	public int getBonus() {
		return bonus;
	}

	public void setBonus(int bonus) {
		this.bonus = bonus;
	}
	
	@Override
	public int compareTo(Customer o) {
		System.out.println("비교 - SpecialCustomer" + super.getName());
		int thisTotPoint = super.getPoint() + bonus;
		int paramTotPoint = 0;
		
		if(o instanceof SpecialCustomer) {
			paramTotPoint = o.getPoint() + ((SpecialCustomer)o).getBonus();
		}else {
			paramTotPoint = o.getPoint();
		}
		
		if(thisTotPoint < paramTotPoint) {
			return -1;
		}else if(thisTotPoint > paramTotPoint) {
			return 1;
		}
		return 0;
	}
	
	public String toString() {
		return super.getName() + "/" + super.getAge() + "/" + super.getPoint() + "/" + bonus;
	}
}

class BonusSorting implements Comparator{
	@Override
	public int compare(Object arg0, Object arg1) {
		//SpecialCustomer 
		return 0;
	}
}


class Order{
	private int orderNo;
	private String product;
	private String orderDt;
	
	public int getOrderNo() {
		return orderNo;
	}

	public void setOrderNo(int orderNo) {
		this.orderNo = orderNo;
	}

	public String getProduct() {
		return product;
	}

	public void setProduct(String product) {
		this.product = product;
	}

	public String getOrderDt() {
		return orderDt;
	}

	public void setOrderDt(String orderDt) {
		this.orderDt = orderDt;
	}

	Order(int orderNo, String product, String orderDt){
		this.orderNo = orderNo;
		this.product = product;
		this.orderDt = orderDt;
	}
}

class SpecialOrder extends Order{
	private String gift;
	
	public String getGift() {
		return gift;
	}

	public void setGift(String gift) {
		this.gift = gift;
	}

	SpecialOrder(int orderNo, String product, String orderDt,String gift){
		super(orderNo, gift, gift);
		this.gift = gift;
	}
}


public class CustomerTest {

	public static void main(String[] args) {
		//Order 자식만 사용가능
		Customer<Order> c1 = new Customer<>("홍길동", 30 , 100);
		Order o = new Order(1234, "정보보호론", "2019-07-01");
		c1.addOrders(o);
		
		//SpecialOrder만 선택가능
		SpecialCustomer<SpecialOrder> c2 = new SpecialCustomer<>("김길동", 31, 10, 10);
		SpecialOrder so = new SpecialOrder(1234, "정보보호론", "2019-07-01", "각티슈");
		c2.addOrders(so);
		
		Customer<Order> c3 = new Customer<>("염민주", 25 , 10);
		Order o3 = new Order(1234, "정보보호론", "2019-07-01");
		c3.addOrders(o3);
		
		ArrayList al = new ArrayList();
		al.add(c1);
		al.add(c2);
		al.add(c3);
		
		//Point로 Customer 정렬, SpecialCustomer는 bonus를 더해준다.
		Collections.sort(al);
		System.out.println(al);
	}
}