public class Book {
	
	String title;
	String author;
	int price;
	
	public Book() {
		this.title = "タイトル未設定";
		this.author = "著者未設定";
		this.price = 0;
		
	}
	public Book(String title, String author, int price) {
		this.title = title;
		this.author = author;
		this.price = price;
		
			
		}
		
	public void output() {
		System.out.println(this.title);
		System.out.println(this.author);
		System.out.println(this.price);
	}
}