[Solved] Expected ‘}’ but eof found [closed]

by


Your static block is off, and you’re missing any import(s). Java doesn’t have a named dictionary parameter syntax, it should look something like

private static Set<Book> books; // do not use raw-types

static {
    books = new HashSet<>(); // diamond operator
    books.add(new Book(1, "C++", 10, "ABC")); // need to close the .add() call
    books.add(new Book(2, "Java", 20, "DEF"));
}

public static Set<Book> allBooks() {
    return books;
}

And make sure you 

import java.util.HashSet;
import java.util.Set;

solved Expected ‘}’ but eof found [closed]