public int addNhanVien(NhanVien nv) { int result = 0; try { con = SQLConnection.getConnection(); pstmt = con.prepareStatement(sqlAddNhanVien); pstmt.setString(1, nv.getTen()); pstmt.setString(2, nv.getTenDangNhap()); pstmt.setString(3, nv.getMatKhau()); pstmt.setString(4, nv.getGhiChu()); result = pstmt.executeUpdate(); } catch (SQLException e) { e.printStackTrace(); } finally { SQLConnection.closeConnection(this.con); SQLConnection.closePrepareStatement(pstmt); } return result; }