{"id":1804,"date":"2022-05-10T03:17:05","date_gmt":"2022-05-10T03:17:05","guid":{"rendered":"https:\/\/topviecit.vn\/blog\/?p=1804"},"modified":"2022-05-10T03:17:07","modified_gmt":"2022-05-10T03:17:07","slug":"abstract-class-la-gi","status":"publish","type":"post","link":"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/","title":{"rendered":"Abstract Class l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn ph\u00e2n bi\u1ec7t Abstract Class v\u00e0 Interface"},"content":{"rendered":"\n<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quen thu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean. Tuy v\u1eady, b\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 hi\u1ec3u v\u1ec1 <strong>Abstract Class l\u00e0 g\u00ec<\/strong> hay kh\u00f4ng? Hi\u1ec7n t\u1ea1i, c\u00f3 kh\u00e1 nhi\u1ec1u b\u1ea1n ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec3u r\u00f5 v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a Abstract Class l\u00e0 g\u00ec v\u00e0 th\u01b0\u1eddng nh\u1ea7m l\u1eabn v\u1edbi Interface. N\u1ebfu b\u1ea1n c\u0169ng \u0111ang t\u00ecm hi\u1ec3u v\u1ec1 kh\u00e1i ni\u1ec7m n\u00e0y, h\u00e3y c\u00f9ng <strong><a href=\"https:\/\/topviecit.vn\/\">topviecit.vn<\/a><\/strong> theo d\u00f5i ngay b\u00e0i vi\u1ebft d\u01b0\u1edbi \u0111\u00e2y.<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_63 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title \" >Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Tim_hieu_ve_Abstract_Class_la_gi\" title=\"T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?\">T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Abstract_Class_la_gi\" title=\"Abstract Class l\u00e0 g\u00ec?\">Abstract Class l\u00e0 g\u00ec?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Truong_hop_can_su_dung_Abstract_Class\" title=\"Tr\u01b0\u1eddng h\u1ee3p c\u1ea7n s\u1eed d\u1ee5ng Abstract Class\">Tr\u01b0\u1eddng h\u1ee3p c\u1ea7n s\u1eed d\u1ee5ng Abstract Class<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Su_khac_nhau_cua_Abstract_Class_va_Interface\" title=\"S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface\">S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Khac_nhau_ve_khai_niem\" title=\"Kh\u00e1c nhau v\u1ec1 kh\u00e1i ni\u1ec7m\">Kh\u00e1c nhau v\u1ec1 kh\u00e1i ni\u1ec7m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Khac_nhau_ve_dac_diem\" title=\"Kh\u00e1c nhau v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m\">Kh\u00e1c nhau v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/#Mot_so_diem_giong_va_khac_nhau_khac\" title=\"M\u1ed9t s\u1ed1 \u0111i\u1ec3m gi\u1ed1ng v\u00e0 kh\u00e1c nhau kh\u00e1c\">M\u1ed9t s\u1ed1 \u0111i\u1ec3m gi\u1ed1ng v\u00e0 kh\u00e1c nhau kh\u00e1c<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Tim_hieu_ve_Abstract_Class_la_gi\"><\/span><strong>T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>\u0110\u1ec3 hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec, b\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o ngay kh\u00e1i ni\u1ec7m c\u0169ng nh\u01b0 v\u00ed d\u1ee5 c\u1ee7a Abstract Class ngay sau \u0111\u00e2y:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Abstract_Class_la_gi\"><\/span><strong>Abstract Class l\u00e0 g\u00ec?<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Abstract Class \u2013 l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 m\u1ed9t l\u1edbp trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng OOP. Abstract Class s\u1ebd khai b\u00e1o 1 ho\u1eb7c nhi\u1ec1u method tr\u1eebu t\u01b0\u1ee3ng trong OOP. C\u00f3 th\u1ec3 g\u1ed3m method c\u1ee5 th\u1ec3 ho\u1eb7c method tr\u1eebu t\u01b0\u1ee3ng. \u0110\u1ed1i v\u1edbi Abstract Class 1 l\u1edbp th\u01b0\u1eddng s\u1ebd l\u00e0 method tr\u1eebu t\u01b0\u1ee3ng.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/nhung-cau-hoi-phong-van-lap-trinh-vien-hay-gap-nhat\/\">Kh\u00e1m ph\u00e1 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n l\u1eadp tr\u00ecnh vi\u00ean hay g\u1eb7p nh\u1ea5t<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-9.jpeg\" alt=\"T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?\" class=\"wp-image-1827\" title=\"T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-9.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-9-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-9-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>T\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec?<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh th\u1ef1c hi\u1ec7n OOP, 1 method tr\u1eebu t\u01b0\u1ee3ng trong Abstract Class s\u1ebd l\u00e0 m\u1ed9t method \u0111\u01b0\u1ee3c khai b\u00e1o kh\u00f4ng c\u00f3 tri\u1ec3n khai. M\u1ed9t Abstract Class s\u1ebd kh\u00f4ng th\u1ec3 t\u1ea1o \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c nh\u01b0ng n\u00f3 s\u1ebd c\u00f3 nhi\u1ec1u l\u1edbp con kh\u00e1c. Khi m\u1ed9t class tr\u1eebu t\u01b0\u1ee3ng nhi\u1ec1u l\u1edbp con, nh\u1eefng l\u1edbp n\u00e0y s\u1ebd cung c\u1ea5p tri\u1ec3n khai cho c\u00e1c method tr\u1eebu t\u01b0\u1ee3ng c\u1ee7a l\u1edbp cha.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Truong_hop_can_su_dung_Abstract_Class\"><\/span><strong>Tr\u01b0\u1eddng h\u1ee3p c\u1ea7n s\u1eed d\u1ee5ng Abstract Class<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0110\u1ec3 hi\u1ec3u h\u01a1n v\u1ec1 Abstract Class l\u00e0 g\u00ec, ch\u1eafc h\u1eb3n b\u1ea1n s\u1ebd th\u1eafc m\u1eafc tr\u01b0\u1eddng h\u1ee3p n\u00e0o n\u00ean s\u1eed d\u1ee5ng Abstract Class?<\/p>\n\n\n\n<p>Trong qu\u00e1 tr\u00ecnh l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng, b\u1ea1n c\u00f3 th\u1ec3 s\u1ebd v\u1ebd c\u00e1c \u0111\u01b0\u1eddng nh\u01b0 h\u00ecnh ch\u1eef nh\u1eadt, h\u00ecnh tr\u00f2n, \u0111\u01b0\u1eddng cong Bezier, \u0111\u01b0\u1eddng k\u1ebb,\u2026 Nh\u1eefng \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0y c\u00f3 t\u00ednh ch\u1ea5t nh\u1ea5t \u0111\u1ecbnh nh\u01b0 v\u1ecb tr\u00ed, m\u00e0u trong, m\u00e0u \u0111\u01b0\u1eddng vi\u1ec1n, \u0111\u1ecbnh h\u01b0\u1edbng,\u2026 Ch\u00fang c\u0169ng s\u1ebd c\u00f3 nh\u1eefng h\u00e0nh vi nh\u01b0 quay, di chuy\u1ec3n, v\u1ebd, \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc,\u2026<\/p>\n\n\n\n<p>Nh\u1eefng h\u00e0nh vi, t\u00ednh ch\u1ea5t n\u00e0y th\u01b0\u1eddng s\u1ebd gi\u1ed1ng nhau. M\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p kh\u00e1c s\u1ebd c\u1ea7n ph\u1ea3i \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc, v\u1ebd. Nh\u1eefng tr\u01b0\u1eddng h\u1ee3p n\u00e0y b\u1ea1n s\u1ebd c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng \u0111\u1ebfn Abstract Class \u0111\u1ec3 th\u1ef1c hi\u1ec7n n\u00f3.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Su_khac_nhau_cua_Abstract_Class_va_Interface\"><\/span><strong>S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>M\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 nhi\u1ec1u b\u1ea1n th\u01b0\u1eddng g\u1eb7p ph\u1ea3i khi t\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 nh\u1ea7m l\u1eabn n\u00f3 v\u1edbi Interface. Tuy nhi\u00ean, \u0111\u00e2y l\u00e0 2 kh\u00e1i ni\u1ec7m kh\u00e1c nhau. B\u1ea1n c\u00f3 th\u1ec3 tham kh\u1ea3o m\u1ed9t s\u1ed1 \u0111\u1eb7c \u0111i\u1ec3m kh\u00e1c nhau nh\u01b0 sau:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Khac_nhau_ve_khai_niem\"><\/span><strong>Kh\u00e1c nhau v\u1ec1 kh\u00e1i ni\u1ec7m<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u0110\u1ea7u ti\u00ean, c\u1ea7n ph\u1ea3i so s\u00e1nh v\u1ec1 \u0111i\u1ec3m kh\u00e1c nhau \u1edf kh\u00e1i ni\u1ec7m c\u1ee7a Interface v\u00e0 Abstract Class l\u00e0 g\u00ec. C\u1ee5 th\u1ec3:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Abstract Class: L\u00e0 l\u1edbp tr\u1eebu t\u01b0\u1ee3ng, c\u00f3 th\u1ec3 ri\u00eang ho\u1eb7c bao g\u1ed3m c\u1ea3 method tr\u1eebu t\u01b0\u1ee3ng ho\u1eb7c c\u1ee5 th\u1ec3.<\/li><li>Interface: L\u00e0 m\u1ed9t khu\u00f4n m\u1eabu \u2013 template c\u1ed1 \u0111\u1ecbnh. Interface kh\u00f4ng ph\u1ea3i l\u00e0 l\u1edbp \u0111\u1ed1i t\u01b0\u1ee3ng nh\u01b0 Abstract Class. Ph\u01b0\u01a1ng th\u1ee9c Interface s\u1ebd b\u1eaft bu\u1ed9c to\u00e0n b\u1ed9 l\u00e0 ph\u01b0\u01a1ng th\u1ee9c tr\u1eebu t\u01b0\u1ee3ng. C\u1ee5 th\u1ec3 h\u01a1n, nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c Interface c\u00f3 kh\u1ea3 n\u0103ng l\u00e0 public.<\/li><\/ul>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/nhung-cau-hoi-phong-van-lap-trinh-vien-hay-gap-nhat\/\">Kh\u00e1m ph\u00e1 nh\u1eefng c\u00e2u h\u1ecfi ph\u1ecfng v\u1ea5n l\u1eadp tr\u00ecnh vi\u00ean hay g\u1eb7p nh\u1ea5t<\/a><\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-10.jpeg\" alt=\"Kh\u00e1i ni\u1ec7m c\u1ee7a Abstract Class v\u00e0 Interface s\u1ebd kh\u00e1c nhau\" class=\"wp-image-1828\" title=\"Kh\u00e1i ni\u1ec7m c\u1ee7a Abstract Class v\u00e0 Interface s\u1ebd kh\u00e1c nhau\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-10.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-10-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-10-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>Kh\u00e1i ni\u1ec7m c\u1ee7a Abstract Class v\u00e0 Interface s\u1ebd kh\u00e1c nhau<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Khac_nhau_ve_dac_diem\"><\/span><strong>Kh\u00e1c nhau v\u1ec1 \u0111\u1eb7c \u0111i\u1ec3m<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>B\u00ean c\u1ea1nh kh\u00e1i ni\u1ec7m, Abstract Class v\u00e0 Interface c\u00f2n kh\u00e1c nhau v\u1ec1 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 sau:<\/p>\n\n\n\n<p><strong>Abstract Class c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m sau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>L\u00e0 m\u1ed9t class, ch\u1ee9a ph\u01b0\u01a1ng th\u1ee9c tr\u1eebu t\u01b0\u1ee3ng.<\/li><li>C\u00e1c l\u1edbp (class) k\u1ebf th\u1eeba m\u1ed9t Abstract Class c\u1ea7n ph\u1ea3i \u0111\u1ecbnh ngh\u0129a l\u1ea1i ph\u01b0\u01a1ng th\u1ee9c tr\u1eebu t\u01b0\u1ee3ng c\u1ee7a n\u00f3.<\/li><li>M\u1ed9t l\u1edbp (class) ch\u1ec9 c\u00f3 th\u1ec3 k\u1ebf th\u1eeba 1 l\u1edbp tr\u1eebu t\u01b0\u1ee3ng.<\/li><li>Trong Abstract Class s\u1ebd c\u00f3 2 lo\u1ea1i method l\u00e0 method th\u01b0\u1eddng v\u00e0 abstract method. Trong \u0111\u00f3, abstract method tr\u1ed1ng kh\u00f4ng c\u00f3 th\u1ef1c thi, c\u00f2n method th\u01b0\u1eddng s\u1ebd c\u00f3 th\u1ef1c thi.<\/li><li>Abstract Class kh\u00f4ng h\u1ed7 tr\u1ee3 \u0111a k\u1ebf th\u1eeba, kh\u00f4ng th\u1ec3 kh\u1edfi t\u1ea1o \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li><li>Ph\u01b0\u01a1ng th\u1ee9c Abstract kh\u00f4ng cho ph\u00e9p khai b\u00e1o n\u1ed9i dung, n\u00f3 ch\u1ec9 \u0111\u1ecbnh ngh\u0129a t\u00ean, tham s\u1ed1 \u0111\u1ea7u v\u00e0o.<\/li><li>M\u1ee9c truy c\u1eadp h\u00e0m c\u1ee7a Abstract Class ph\u1ea3i \u1edf protect ho\u1eb7c public. M\u1ee5c \u0111\u00edch \u0111\u1ec3 l\u1edbp k\u1ebf th\u1eeba \u0111\u1ecbnh ngh\u0129a l\u1ea1i thu\u1ed9c t\u00ednh c\u1ee7a l\u1edbp abstract kh\u00f4ng \u0111\u01b0\u1ee3c khai b\u00e1o.<\/li><\/ul>\n\n\n\n<p><strong>Interface c\u00f3 nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m nh\u01b0 sau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>L\u00e0 m\u1ed9t khu\u00f4n m\u1eabu, kh\u00f4ng ph\u1ea3i l\u00e0 l\u1edbp \u0111\u1ed1i t\u01b0\u1ee3ng.<\/li><li>\u0110\u1ec3 c\u00f3 th\u1ec3 khai b\u00e1o \u0111\u01b0\u1ee3c Interface, b\u1ea1n c\u1ea7n d\u00f9ng t\u1eeb kh\u00f3a c\u1ee7a Interface thay cho c\u00e1c t\u1eeb kh\u00f3a class.<\/li><li>T\u1ea5t c\u1ea3 c\u00e1c h\u00e0m c\u1ee7a Interface \u0111\u1ec1u \u0111\u01b0\u1ee3c \u1edf d\u1ea1ng khai b\u00e1o, kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a.<\/li><li>Interface l\u00e0 c\u1ea5u tr\u00fac trong l\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng (OOP), cho ph\u00e9p c\u00e1c l\u1edbp (class) c\u00f3 th\u1ec3 implements.<\/li><li>M\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng implement th\u00ec ph\u1ea3i khai b\u00e1o, \u0111\u1ecbnh ngh\u0129a \u0111\u01b0\u1ee3c t\u1ea5t c\u1ea3 c\u00e1c h\u00e0m c\u00f3 trong interface.<\/li><li>Interface kh\u00f4ng th\u1ec3 kh\u1edfi t\u1ea1o \u0111\u01b0\u1ee3c.<\/li><li>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f3 trong Interface b\u1eaft bu\u1ed9c ph\u1ea3i l\u00e0 ph\u01b0\u01a1ng th\u1ee9c tr\u1eebu t\u01b0\u1ee3ng.<\/li><li>Nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c c\u00f3 trong Interface s\u1ebd ch\u1ec9 \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a v\u1edbi kh\u1ea3 n\u0103ng public, kh\u00f4ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a n\u1ed9i dung.<\/li><li>M\u1ed9t class c\u00f3 th\u1ec3 implements \u0111\u01b0\u1ee3c nhi\u1ec1u interface. Interface c\u00f3 th\u1ec3 th\u1ef1c hi\u1ec7n extends v\u1edbi nhau.<\/li><\/ul>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/design-pattern-la-gi-nhung-ly-do-nen-su-dung-design-pattern\/\">Design Pattern L\u00e0 G\u00ec? Nh\u1eefng L\u00fd Do N\u00ean S\u1eed D\u1ee5ng Design Pattern<\/a><\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Mot_so_diem_giong_va_khac_nhau_khac\"><\/span><strong>M\u1ed9t s\u1ed1 \u0111i\u1ec3m gi\u1ed1ng v\u00e0 kh\u00e1c nhau kh\u00e1c<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>B\u00ean c\u1ea1nh nh\u1eefng \u0111\u1eb7c \u0111i\u1ec3m tr\u00ean, Abstract Class v\u00e0 Interface c\u0169ng s\u1ebd c\u00f3 m\u1ed9t s\u1ed1 \u0111i\u1ec3m kh\u00e1c v\u00e0 gi\u1ed1ng nhau nh\u01b0 sau:<\/p>\n\n\n\n<p><strong>Gi\u1ed1ng nhau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Kh\u00f4ng th\u1ec3 th\u1ef1c hi\u1ec7n t\u1ea1o m\u1ed9t bi\u1ebfn \u1edf c\u1ea3 Abstract Class v\u00e0 Interface.<\/li><li>C\u1ea3 Abstract Class v\u00e0 Interface \u0111\u1ec1 c\u00f3 t\u00ednh k\u1ebf th\u1eeba.<\/li><li>N\u1ebfu l\u00e0 ph\u01b0\u01a1ng th\u1ee9c Abstract s\u1ebd c\u1ea7n ph\u1ea3i \u0111\u01b0\u1ee3c khai b\u00e1o l\u1ea1i trong c\u00e1c l\u1edbp (class) con.<\/li><\/ul>\n\n\n\n<p><strong>Kh\u00e1c nhau:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c c\u00f3 trong Interview s\u1ebd lu\u00f4n lu\u00f4n \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 Abstract.<\/li><li>Nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c trong Abstract Class c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 Abstract ho\u1eb7c kh\u00f4ng ph\u1ea3i Abstract.<\/li><li>C\u00e1c ph\u01b0\u01a1ng th\u1ee9c c\u00f3 trong Interface lu\u00f4n lu\u00f4n ph\u1ea3i \u1edf d\u1ea1ng public. Ng\u01b0\u1ee3c l\u1ea1i, trong Abstract Class b\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ec3 public, protected ho\u1eb7c private.<\/li><\/ul>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"500\" src=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-11.jpeg\" alt=\"S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface\" class=\"wp-image-1829\" title=\"S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface\" srcset=\"https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-11.jpeg 800w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-11-640x400.jpeg 640w, https:\/\/topviecit.vn\/blog\/wp-content\/uploads\/2022\/05\/image-11-768x480.jpeg 768w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption><em>S\u1ef1 kh\u00e1c nhau c\u1ee7a Abstract Class v\u00e0 Interface<\/em><\/figcaption><\/figure><\/div>\n\n\n\n<p>Hy v\u1ecdng b\u00e0i vi\u1ebft tr\u00ean s\u1ebd gi\u00fap b\u1ea1n hi\u1ec3u h\u01a1n v\u1ec1 <strong>Abstract Class l\u00e0 g\u00ec<\/strong>, \u1ee9ng d\u1ee5ng \u0111\u01b0\u1ee3c Abstract Class trong c\u00f4ng vi\u1ec7c c\u1ee7a m\u00ecnh. \u0110\u1eebng qu\u00ean theo d\u00f5i c\u00e1c b\u00e0i vi\u1ebft kh\u00e1c thu\u1ed9c chuy\u00ean m\u1ee5c n\u00e0y \u0111\u1ec3 c\u1eadp nh\u1eadt th\u00eam c\u00e1c tin t\u1ee9c li\u00ean quan \u0111\u1ebfn <a href=\"https:\/\/www.topcv.vn\/viec-lam-it\"><strong>vi\u1ec7c l\u00e0m c\u00f4ng ngh\u1ec7 th\u00f4ng tin<\/strong><\/a>.<\/p>\n\n\n\n<p>>>>Xem th\u00eam: <a href=\"https:\/\/topviecit.vn\/blog\/product-backlog-la-gi\/\">Product Backlog l\u00e0 g\u00ec? \u0110\u1eb7c \u0111i\u1ec3m c\u1ee7a m\u1ed9t Product Backlog<\/a><\/p>\n\n\n\n<p class=\"has-text-align-right\"><em>H\u00ecnh \u1ea3nh: S\u01b0u t\u1ea7m<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>L\u1eadp tr\u00ecnh h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed9t kh\u00e1i ni\u1ec7m quen thu\u1ed9c \u0111\u1ed1i v\u1edbi c\u00e1c l\u1eadp tr\u00ecnh vi\u00ean. Tuy v\u1eady, b\u1ea1n c\u00f3 th\u1ef1c s\u1ef1 hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec hay kh\u00f4ng? Hi\u1ec7n t\u1ea1i, c\u00f3 kh\u00e1 nhi\u1ec1u b\u1ea1n ch\u01b0a th\u1ef1c s\u1ef1 hi\u1ec3u r\u00f5 v\u1ec1 b\u1ea3n ch\u1ea5t c\u1ee7a Abstract Class l\u00e0 g\u00ec v\u00e0 th\u01b0\u1eddng nh\u1ea7m l\u1eabn v\u1edbi [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":1808,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[86],"tags":[432,427,433],"class_list":["post-1804","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-chia-se-kinh-nghiem","tag-abstract-class-java","tag-abstract-class-la-gi","tag-abstract-class-trong-java-la-gi"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Abstract Class l\u00e0 g\u00ec? H\u01b0\u1edbng d\u1eabn ph\u00e2n bi\u1ec7t Abstract Class v\u00e0 Interface<\/title>\n<meta name=\"description\" content=\"M\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 nhi\u1ec1u b\u1ea1n th\u01b0\u1eddng g\u1eb7p ph\u1ea3i khi t\u00ecm hi\u1ec3u v\u1ec1 Abstract Class l\u00e0 g\u00ec \u0111\u00f3 ch\u00ednh l\u00e0 nh\u1ea7m l\u1eabn n\u00f3 v\u1edbi Interface.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/topviecit.vn\/blog\/abstract-class-la-gi\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Abstract Class l\u00e0 g\u00ec? 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