public class QuanLyThuVien { int n; TaiLieu taiLieu[]; public void input() { Scanner scan = new Scanner(System.in); System.out.print("Nhap so tai lieu: "); n = Integer.parseInt(scan.nextLine()); taiLieu = new TaiLieu[n]; for (int i = 0; i < n; i++) { System.out.pr...