public Book hasBook(Book k) {
for (Book q : BookList) {
if (k.equals(q)) {
return q;
}
}
return null;
}
public void removeAllBooksByList(List<Book> tmpBookList) {
for (Book k : BookList) {
for (Book tmpK : tmpBookList) {
if (k.equals(tmpK)) {
BookList.remove(k);
}
}
}
}
