스트림관련 코딩

스트림 관련 코딩

package chapter12;

import java.util.ArrayList;
import java.util.List;

public class TravelTest {

	public static void main(String[] args) {
		
		TravelCustomer customerLee = new TravelCustomer("이순신",40,100);
		TravelCustomer customerKim = new TravelCustomer("김유신",20,100);
		TravelCustomer customerHong = new TravelCustomer("홍길동",13,50);
		
		List<TravelCustomer> customerList = new ArrayList<TravelCustomer>();
		customerList.add(customerLee);
		customerList.add(customerHong);
		customerList.add(customerKim);
		
		System.out.println(customerList);
		
		customerList.stream().map(c->c.getName()).forEach(s->System.out.println(s));
		int total = customerList.stream().mapToInt(c->c.getPrice()).sum();
		System.out.println(total);
		
		customerList.stream().filter(c->c.getAge()>=20).map(c->c.getName()).sorted().forEach(s->System.out.println(s));
	}

}

package chapter12;

public class TravelCustomer {

	private String name;
	private int age;
	private int price;
	
	public TravelCustomer(String name, int age, int price) {
		this.name=name;
		this.age=age;
		this.price=price;
	}

	
	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 getPrice() {
		return price;
	}
	public void setPrice(int price) {
		this.price = price;
	}
	
	public String toString() {
		return name+","+age+","+price;
	}
}