Why am I getting this error?

java_unit_test:6: error:cannot find symbol1 Item item; ^ symbol: class Item location: class UNITTEST 1 error [ERROR] did not compile; check the compiler stack trace field for more info

Heres my code:

public class Book { private String title; private String author; private int pages; private int year; public Book(String title, String author, int pages, int year) { this.title = title; this.author = author; this.pages = pages; this.year = year; } public int getYear() { return year; } public String getAuthor() { return author; } public String getTitle() { return title; } public int getPages() { return pages; } public String basicInfo() { return getTitle() + ", by " + getAuthor(); }