Javaのオーバーロードを使った問題

class Book{ String title, size; int price; Book(String title, String size, int price){ this.title = title; this.size = size; this.price = price; } public String info(){ return title + " " + size; } public String info(String title){ return title + " " + size + " " + price +"円"; } public int info(String title, String size){ return price; } } ________________________________________________________ class Book_test{ public static void main(String[] args){ String[] title = {"図鑑","参考書","雑誌","地図"}; String[] size = {"B4", "A5", "A4", "A3"}; int[] price={4500, 1800, 600, 1400}; Book[] b = new Book[4]; for(int i=0; i