{"id":4087,"date":"2026-03-25T19:35:43","date_gmt":"2026-03-25T11:35:43","guid":{"rendered":"https:\/\/www.go2posts.com\/vn\/state-diagrams-managing-complex-object-lifecycles\/"},"modified":"2026-03-25T19:35:43","modified_gmt":"2026-03-25T11:35:43","slug":"state-diagrams-managing-complex-object-lifecycles","status":"publish","type":"post","link":"https:\/\/www.go2posts.com\/vn\/state-diagrams-managing-complex-object-lifecycles\/","title":{"rendered":"H\u01b0\u1edbng d\u1eabn OOAD: Bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p"},"content":{"rendered":"

Trong b\u1ed1i c\u1ea3nh ph\u1ee9c t\u1ea1p c\u1ee7a Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u01b0\u1edbng \u0110\u1ed1i t\u01b0\u1ee3ng (OOAD), h\u00e0nh vi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng th\u01b0\u1eddng quan tr\u1ecdng kh\u00f4ng k\u00e9m c\u1ea5u tr\u00fac c\u1ee7a n\u00f3. Trong khi bi\u1ec3u \u0111\u1ed3 l\u1edbp \u0111\u1ecbnh ngh\u0129a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 g\u00ec,l\u00e0<\/em>, bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u1ecbnh ngh\u0129a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ngl\u00e0m<\/em>theo th\u1eddi gian. Vi\u1ec7c qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p nghi\u00eam ng\u1eb7t \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a c\u00e1c chuy\u1ec3n ti\u1ebfp, \u0111\u1ea3m b\u1ea3o r\u1eb1ng h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau. H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 c\u01a1 ch\u1ebf c\u1ee7a bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i, t\u1eadp trung v\u00e0o c\u00e1ch ch\u00fang mang l\u1ea1i s\u1ef1 r\u00f5 r\u00e0ng cho c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u1ed9ng n\u01a1i c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i quy\u1ebft \u0111\u1ecbnh ch\u1ee9c n\u0103ng.<\/p>\n

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\"Hand-drawn<\/figure>\n<\/div>\n

\ud83c\udfaf Hi\u1ec3u v\u1ec1 V\u00f2ng \u0111\u1eddi \u0110\u1ed1i t\u01b0\u1ee3ng<\/h2>\n

M\u1ecdi \u0111\u1ed1i t\u01b0\u1ee3ng trong m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m \u0111\u1ec1u t\u1ed3n t\u1ea1i trong m\u1ed9t kho\u1ea3ng th\u1eddi gian c\u1ee5 th\u1ec3, di chuy\u1ec3n qua c\u00e1c giai \u0111o\u1ea1n kh\u00e1c nhau t\u1eeb khi \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ebfn khi b\u1ecb h\u1ee7y b\u1ecf. H\u00e0nh tr\u00ecnh n\u00e0y kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng tuy\u1ebfn t\u00ednh. C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng th\u01b0\u1eddng chuy\u1ec3n \u0111\u1ed5i qua l\u1ea1i gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i d\u1ef1a tr\u00ean logic n\u1ed9i b\u1ed9 ho\u1eb7c c\u00e1c s\u1ef1 ki\u1ec7n b\u00ean ngo\u00e0i. N\u1ebfu kh\u00f4ng c\u00f3 m\u1ed9t m\u00f4 h\u00ecnh r\u00f5 r\u00e0ng, c\u00e1c chuy\u1ec3n ti\u1ebfp n\u00e0y c\u00f3 th\u1ec3 tr\u1edf n\u00ean r\u1ed1i r\u1eafm, d\u1eabn \u0111\u1ebfn c\u00e1c l\u1ed7i kh\u00f3 theo d\u00f5i.<\/p>\n

H\u00e3y xem x\u00e9t m\u1ed9t h\u1ec7 th\u1ed1ng giao d\u1ecbch ng\u00e2n h\u00e0ng. M\u1ed9t y\u00eau c\u1ea7u thanh to\u00e1n kh\u00f4ng ch\u1ec9 \u0111\u01a1n gi\u1ea3n di chuy\u1ec3n t\u1eeb “\u0110ang ch\u1edd” sang “Ho\u00e0n th\u00e0nh.” N\u00f3 c\u00f3 th\u1ec3 \u0111i v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i nh\u01b0 “\u0110ang x\u1eed l\u00fd,” “Th\u1ea5t b\u1ea1i,” “\u0110\u00e3 ho\u00e0n ti\u1ec1n,” ho\u1eb7c “\u0110ang tranh ch\u1ea5p.” M\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ec1u mang theo c\u00e1c quy\u1ec1n h\u1ea1n v\u00e0 h\u00e0nh vi c\u1ee5 th\u1ec3. V\u00ed d\u1ee5, m\u1ed9t kho\u1ea3n thanh to\u00e1n “\u0110\u00e3 ho\u00e0n ti\u1ec1n” kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c x\u1eed l\u00fd l\u1ea1i, trong khi m\u1ed9t kho\u1ea3n thanh to\u00e1n “\u0110ang ch\u1edd” c\u00f3 th\u1ec3 b\u1ecb h\u1ee7y.<\/p>\n

C\u00e1c kh\u00eda c\u1ea1nh ch\u00ednh c\u1ee7a qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi bao g\u1ed3m:<\/p>\n

    \n
  • X\u00e1c \u0111\u1ecbnh Tr\u1ea1ng th\u00e1i:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c ch\u1ebf \u0111\u1ed9 ri\u00eang bi\u1ec7t m\u00e0 m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 t\u1ed3n t\u1ea1i.<\/li>\n
  • K\u00edch ho\u1ea1t S\u1ef1 ki\u1ec7n:<\/strong> X\u00e1c \u0111\u1ecbnh nguy\u00ean nh\u00e2n g\u00e2y ra vi\u1ec7c chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c.<\/li>\n
  • \u0110i\u1ec1u ki\u1ec7n B\u1ea3o v\u1ec7:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c r\u00e0ng bu\u1ed9c logic ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng tr\u01b0\u1edbc khi m\u1ed9t chuy\u1ec3n ti\u1ebfp x\u1ea3y ra.<\/li>\n
  • H\u00e0nh \u0111\u1ed9ng:<\/strong> X\u00e1c \u0111\u1ecbnh c\u00e1c thao t\u00e1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n khi v\u00e0o, r\u1eddi kh\u1ecfi ho\u1eb7c ho\u00e0n th\u00e0nh m\u1ed9t tr\u1ea1ng th\u00e1i.<\/li>\n<\/ul>\n

    B\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a c\u00e1c y\u1ebfu t\u1ed1 n\u00e0y, c\u00e1c ki\u1ebfn tr\u00fac s\u01b0 v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft chung v\u1ec1 h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng. M\u00f4 h\u00ecnh t\u01b0 duy chung n\u00e0y gi\u00fap gi\u1ea3m s\u1ef1 m\u01a1 h\u1ed3 v\u00e0 t\u1ea1o \u0111i\u1ec1u ki\u1ec7n thu\u1eadn l\u1ee3i cho vi\u1ec7c giao ti\u1ebfp gi\u1eefa c\u00e1c b\u00ean li\u00ean quan.<\/p>\n

    \u2699\ufe0f C\u00e1c Th\u00e0nh ph\u1ea7n C\u1ed1t l\u00f5i c\u1ee7a Bi\u1ec3u \u0111\u1ed3 Tr\u1ea1ng th\u00e1i<\/h2>\n

    Bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n tr\u1ef1c quan c\u1ee7a M\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n (FSM). N\u00f3 bao g\u1ed3m c\u00e1c k\u00fd hi\u1ec7u v\u00e0 b\u1ed9 k\u1ebft n\u1ed1i c\u1ee5 th\u1ec3 \u0111\u1ec3 th\u1ec3 hi\u1ec7n lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n. Vi\u1ec7c hi\u1ec3u c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 x\u00e2y d\u1ef1ng c\u00e1c m\u00f4 h\u00ecnh ch\u00ednh x\u00e1c.<\/p>\n

    1. Tr\u1ea1ng th\u00e1i<\/h3>\n

    M\u1ed9t tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c t\u00ecnh hu\u1ed1ng trong v\u00f2ng \u0111\u1eddi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng, n\u01a1i n\u00f3 \u0111\u00e1p \u1ee9ng m\u1ed9t s\u1ed1 \u0111i\u1ec1u ki\u1ec7n, th\u1ef1c hi\u1ec7n m\u1ed9t s\u1ed1 ho\u1ea1t \u0111\u1ed9ng ho\u1eb7c ch\u1edd \u0111\u1ee3i m\u1ed9t s\u1ef1 ki\u1ec7n n\u00e0o \u0111\u00f3. C\u00e1c tr\u1ea1ng th\u00e1i th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng c\u00e1c h\u00ecnh ch\u1eef nh\u1eadt bo tr\u00f2n.<\/p>\n

      \n
    • Tr\u1ea1ng th\u00e1i \u0110\u01a1n gi\u1ea3n:<\/strong> C\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u01a1 b\u1ea3n kh\u00f4ng th\u1ec3 ph\u00e2n t\u00e1ch th\u00eam.<\/li>\n
    • Tr\u1ea1ng th\u00e1i T\u1ed5ng h\u1ee3p:<\/strong> C\u00e1c tr\u1ea1ng th\u00e1i ch\u1ee9a c\u00e1c tr\u1ea1ng th\u00e1i con, cho ph\u00e9p m\u00f4 h\u00ecnh h\u00f3a theo c\u1ea5p b\u1eadc.<\/li>\n
    • Tr\u1ea1ng th\u00e1i Kh\u1edfi \u0111\u1ea7u:<\/strong> \u0110i\u1ec3m b\u1eaft \u0111\u1ea7u c\u1ee7a v\u00f2ng \u0111\u1eddi, th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c.<\/li>\n
    • Tr\u1ea1ng th\u00e1i K\u1ebft th\u00fac:<\/strong> \u0110i\u1ec3m k\u1ebft th\u00fac c\u1ee7a v\u00f2ng \u0111\u1eddi, th\u01b0\u1eddng l\u00e0 m\u1ed9t h\u00ecnh tr\u00f2n \u0111en \u0111\u1eb7c n\u1eb1m b\u00ean trong m\u1ed9t h\u00ecnh tr\u00f2n kh\u00e1c.<\/li>\n<\/ul>\n

      2. Chuy\u1ec3n ti\u1ebfp<\/h3>\n

      Chuy\u1ec3n ti\u1ebfp x\u00e1c \u0111\u1ecbnh s\u1ef1 di chuy\u1ec3n t\u1eeb tr\u1ea1ng th\u00e1i n\u00e0y sang tr\u1ea1ng th\u00e1i kh\u00e1c. Ch\u00fang \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n v\u00e0 c\u00f3 th\u1ec3 li\u00ean quan \u0111\u1ebfn c\u00e1c h\u00e0nh \u0111\u1ed9ng ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7.<\/p>\n

        \n
      • S\u1ef1 ki\u1ec7n:<\/strong> M\u1ed9t \u0111i\u1ec1u g\u00ec \u0111\u00f3 x\u1ea3y ra (v\u00ed d\u1ee5: ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p chu\u1ed9t, b\u1ed9 \u0111\u1ebfm th\u1eddi gian c\u1ee7a h\u1ec7 th\u1ed1ng, tin nh\u1eafn \u0111\u1ebfn).<\/li>\n
      • \u0110i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7:<\/strong> M\u1ed9t bi\u1ec3u th\u1ee9c logic Boolean ph\u1ea3i \u0111\u00e1nh gi\u00e1 l\u00e0 \u0111\u00fang \u0111\u1ec3 chuy\u1ec3n ti\u1ebfp x\u1ea3y ra.<\/li>\n
      • H\u00e0nh \u0111\u1ed9ng:<\/strong> M\u1ed9t thao t\u00e1c \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n trong qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp (khi v\u00e0o, khi ra, ho\u1eb7c trong khi).<\/li>\n<\/ul>\n

        3. C\u00e1c n\u00fat giao<\/h3>\n

        C\u00e1c n\u00fat giao \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00e1c \u0111i\u1ec3m \u0111\u1ecbnh tuy\u1ebfn n\u01a1i nhi\u1ec1u chuy\u1ec3n ti\u1ebfp h\u1ed9i t\u1ee5 ho\u1eb7c ph\u00e2n k\u1ef3. Ch\u00fang \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 qu\u1ea3n l\u00fd logic ph\u1ee9c t\u1ea1p m\u00e0 kh\u00f4ng l\u00e0m r\u1ed1i bi\u1ec3u \u0111\u1ed3 b\u1eb1ng c\u00e1c m\u0169i t\u00ean d\u01b0 th\u1eeba.<\/p>\n

        \ud83d\udccb Tr\u1ea1ng th\u00e1i so v\u1edbi L\u1edbp so v\u1edbi Chu\u1ed7i<\/h2>\n

        \u0110\u1ec3 hi\u1ec3u s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i ph\u00f9 h\u1ee3p \u1edf \u0111\u00e2u trong quy tr\u00ecnh thi\u1ebft k\u1ebf t\u1ed5ng th\u1ec3, vi\u1ec7c so s\u00e1nh ch\u00fang v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c s\u1ebd r\u1ea5t h\u1eefu \u00edch. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y ph\u00e1c th\u1ea3o tr\u1ecdng t\u00e2m ch\u00ednh v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng cho m\u1ed7i lo\u1ea1i bi\u1ec3u \u0111\u1ed3.<\/p>\n\n\n\n\n\n\n\n
        Lo\u1ea1i bi\u1ec3u \u0111\u1ed3<\/th>\nTr\u1ecdng t\u00e2m ch\u00ednh<\/th>\nPh\u00f9 h\u1ee3p nh\u1ea5t cho<\/th>\n<\/tr>\n<\/thead>\n
        Bi\u1ec3u \u0111\u1ed3 L\u1edbp<\/strong><\/td>\nC\u1ea5u tr\u00fac v\u00e0 Thu\u1ed9c t\u00ednh<\/td>\nX\u00e1c \u0111\u1ecbnh c\u00e1c m\u00f4 h\u00ecnh d\u1eef li\u1ec7u, m\u1ed1i quan h\u1ec7 v\u00e0 k\u1ebf th\u1eeba.<\/td>\n<\/tr>\n
        Bi\u1ec3u \u0111\u1ed3 Chu\u1ed7i<\/strong><\/td>\nT\u01b0\u01a1ng t\u00e1c theo th\u1eddi gian<\/td>\nTr\u1ef1c quan h\u00f3a lu\u1ed3ng tin nh\u1eafn gi\u1eefa c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng cho m\u1ed9t k\u1ecbch b\u1ea3n c\u1ee5 th\u1ec3.<\/td>\n<\/tr>\n
        Bi\u1ec3u \u0111\u1ed3 Tr\u1ea1ng th\u00e1i<\/strong><\/td>\nH\u00e0nh vi n\u1ed9i b\u1ed9<\/td>\nM\u00f4 h\u00ecnh h\u00f3a logic v\u00f2ng \u0111\u1eddi, c\u00e1c r\u00e0ng bu\u1ed9c v\u00e0 h\u00e0nh vi ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ea1ng th\u00e1i.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

        Trong khi bi\u1ec3u \u0111\u1ed3 l\u1edbp cung c\u1ea5p b\u1ed9 khung, bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i cung c\u1ea5p c\u01a1 b\u1eafp v\u00e0 h\u1ec7 th\u1ea7n kinh. Ch\u00fang \u0111\u1eb7c bi\u1ec7t c\u00f3 gi\u00e1 tr\u1ecb khi logic c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i c\u1ee7a n\u00f3.<\/p>\n

        \ud83e\udde9 Thi\u1ebft k\u1ebf cho s\u1ef1 ph\u1ee9c t\u1ea1p<\/h2>\n

        C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01a1n gi\u1ea3n c\u00f3 m\u1ed9t v\u00e0i tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1c chuy\u1ec3n ti\u1ebfp \u0111\u01a1n gi\u1ea3n. Tuy nhi\u00ean, c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p \u0111\u00f2i h\u1ecfi c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a ti\u00ean ti\u1ebfn \u0111\u1ec3 duy tr\u00ec s\u1ef1 r\u00f5 r\u00e0ng. Khi v\u00f2ng \u0111\u1eddi tr\u1edf n\u00ean ph\u1ee9c t\u1ea1p, vi\u1ec7c ch\u1ec9 d\u1ef1a v\u00e0o c\u00e1c bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i ph\u1eb3ng s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c h\u00ecnh \u1ea3nh gi\u1ed1ng nh\u01b0 m\u00ec spaghetti, v\u1ed1n kh\u00f4ng th\u1ec3 b\u1ea3o tr\u00ec \u0111\u01b0\u1ee3c.<\/p>\n

        1. Tr\u1ea1ng th\u00e1i ph\u00e2n c\u1ea5p (Tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p)<\/h3>\n

        C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p th\u01b0\u1eddng c\u00f3 c\u00e1c h\u00e0nh vi con b\u00ean trong m\u1ed9t tr\u1ea1ng th\u00e1i r\u1ed9ng h\u01a1n. V\u00ed d\u1ee5, m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01a1n h\u00e0ng c\u00f3 th\u1ec3 \u1edf tr\u1ea1ng th\u00e1i “\u0110ang x\u1eed l\u00fd”. B\u00ean trong “\u0110ang x\u1eed l\u00fd”, n\u00f3 c\u00f3 th\u1ec3 l\u00e0 “\u0110ang x\u00e1c minh”, “\u0110ang v\u1eadn chuy\u1ec3n” ho\u1eb7c “\u0110 \u0111\u00f3ng g\u00f3i”. Vi\u1ec7c s\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p cho ph\u00e9p b\u1ea1n nh\u00f3m c\u00e1c tr\u1ea1ng th\u00e1i con n\u00e0y d\u01b0\u1edbi m\u1ed9t tr\u1ea1ng th\u00e1i cha.<\/p>\n

          \n
        • L\u1ee3i \u00edch:<\/strong>Gi\u1ea3m s\u1ef1 l\u1ed9n x\u1ed9n v\u1ec1 m\u1eb7t tr\u1ef1c quan v\u00e0 qu\u1ea3n l\u00fd \u0111\u1ed9 ph\u1ee9c t\u1ea1p.<\/li>\n
        • H\u00e0nh \u0111\u1ed9ng v\u00e0o\/ra:<\/strong>B\u1ea1n c\u00f3 th\u1ec3 \u0111\u1ecbnh ngh\u0129a c\u00e1c h\u00e0nh \u0111\u1ed9ng ch\u1ea1y khi v\u00e0o tr\u1ea1ng th\u00e1i cha (tr\u01b0\u1edbc c\u00e1c tr\u1ea1ng th\u00e1i con) v\u00e0 khi tho\u00e1t ra (sau c\u00e1c tr\u1ea1ng th\u00e1i con).<\/li>\n<\/ul>\n

          2. Tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed<\/h3>\n

          Khi m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p, n\u00f3 th\u01b0\u1eddng c\u1ea7n nh\u1edb l\u1ea1i v\u1ecb tr\u00ed m\u00e0 n\u00f3 \u0111\u00e3 d\u1eebng l\u1ea1i. Tr\u1ea1ng th\u00e1i l\u1ecbch s\u1eed l\u01b0u gi\u1eef tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng.<\/p>\n

            \n
          • L\u1ecbch s\u1eed n\u00f4ng:<\/strong>Quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng c\u1ee7a tr\u1ea1ng th\u00e1i cha.<\/li>\n
          • L\u1ecbch s\u1eed s\u00e2u:<\/strong>Quay tr\u1edf l\u1ea1i tr\u1ea1ng th\u00e1i con ho\u1ea1t \u0111\u1ed9ng cu\u1ed1i c\u00f9ng c\u1ee7a m\u1ed9t tr\u1ea1ng th\u00e1i con n\u1eb1m trong h\u1ec7 th\u1ed1ng ph\u00e2n c\u1ea5p.<\/li>\n<\/ul>\n

            3. V\u00f9ng tr\u1ef1c giao (\u0111\u1ed3ng th\u1eddi)<\/h3>\n

            M\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng qu\u1ea3n l\u00fd nhi\u1ec1u v\u00f2ng \u0111\u1eddi \u0111\u1ed9c l\u1eadp c\u00f9ng l\u00fac. V\u00ed d\u1ee5, m\u1ed9t thi\u1ebft b\u1ecb y t\u1ebf c\u00f3 th\u1ec3 theo d\u00f5i \u201cT\u00ecnh tr\u1ea1ng b\u1ec7nh nh\u00e2n\u201d v\u00e0 \u201cPin thi\u1ebft b\u1ecb\u201d m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp. C\u00e1c v\u00f9ng tr\u1ef1c giao cho ph\u00e9p b\u1ea1n chia m\u1ed9t tr\u1ea1ng th\u00e1i th\u00e0nh nhi\u1ec1u v\u00f9ng con \u0111\u1ed9c l\u1eadp ho\u1ea1t \u0111\u1ed9ng song song.<\/p>\n

              \n
            • Tri\u1ec3n khai:<\/strong>\u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n tr\u1ef1c quan b\u1eb1ng m\u1ed9t \u0111\u01b0\u1eddng n\u00e9t \u0111\u1ee9t chia t\u00e1ch tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p.<\/li>\n
            • \u0110\u1ed3ng b\u1ed9 h\u00f3a:<\/strong>C\u00e1c chuy\u1ec3n \u0111\u1ed5i c\u00f3 th\u1ec3 c\u1ea7n x\u1ea3y ra gi\u1eefa c\u00e1c v\u00f9ng \u0111\u1ec3 ph\u1ed1i h\u1ee3p h\u00e0nh vi.<\/li>\n<\/ul>\n

              \ud83d\udee0\ufe0f Quy tr\u00ecnh thi\u1ebft k\u1ebf<\/h2>\n

              Vi\u1ec7c t\u1ea1o bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t h\u00e0nh \u0111\u1ed9ng v\u1ebd ng\u1eabu nhi\u00ean. N\u00f3 tu\u00e2n theo m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn c\u00f3 c\u1ea5u tr\u00fac \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 h\u1eefu \u00edch.<\/p>\n

              B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng<\/h3>\n

              Ch\u1ecdn \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u1ef1c th\u1ec3 c\u1ee5 th\u1ec3 c\u1ea7n qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi. Kh\u00f4ng ph\u1ea3i \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o c\u0169ng c\u1ea7n bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i. H\u00e3y t\u1eadp trung v\u00e0o c\u00e1c th\u1ef1c th\u1ec3 c\u00f3 \u0111\u1ed9 ph\u1ee9c t\u1ea1p h\u00e0nh vi \u0111\u00e1ng k\u1ec3.<\/p>\n

              B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i kh\u1edfi \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac<\/h3>\n

              L\u1eadp b\u1ea3n \u0111\u1ed3 c\u00e1c \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u1ee7a v\u00f2ng \u0111\u1eddi. \u0110\u1ea3m b\u1ea3o b\u1ea1n t\u00ednh \u0111\u1ebfn c\u00e1c k\u1ecbch b\u1ea3n m\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 b\u1ecb k\u1ebft th\u00fac s\u1edbm ho\u1eb7c b\u1ecb h\u1ee7y b\u1ecf.<\/p>\n

              B\u01b0\u1edbc 3: Li\u1ec7t k\u00ea t\u1ea5t c\u1ea3 c\u00e1c tr\u1ea1ng th\u00e1i c\u00f3 th\u1ec3<\/h3>\n

              C\u00f4ng b\u1ed1 danh s\u00e1ch t\u1ea5t c\u1ea3 c\u00e1c \u0111i\u1ec1u ki\u1ec7n h\u1ee3p l\u1ec7 m\u00e0 \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 n\u1eafm gi\u1eef. S\u1eed d\u1ee5ng c\u00e1c chuy\u00ean gia trong l\u0129nh v\u1ef1c \u0111\u1ec3 x\u00e1c th\u1ef1c danh s\u00e1ch n\u00e0y. C\u00e1c l\u1ed7i ph\u1ed5 bi\u1ebfn bao g\u1ed3m b\u1ecf s\u00f3t tr\u1ea1ng th\u00e1i ho\u1eb7c nh\u1ea7m l\u1eabn gi\u1eefa c\u00e1c tr\u1ea1ng th\u00e1i kh\u00e1c nhau.<\/p>\n

              B\u01b0\u1edbc 4: X\u00e1c \u0111\u1ecbnh c\u00e1c chuy\u1ec3n \u0111\u1ed5i v\u00e0 s\u1ef1 ki\u1ec7n<\/h3>\n

              V\u1ebd c\u00e1c m\u0169i t\u00ean n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i. G\u1eafn nh\u00e3n cho m\u1ed7i m\u0169i t\u00ean b\u1eb1ng s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t. \u0110\u1eb7t c\u00e2u h\u1ecfi: \u201c\u0110i\u1ec1u g\u00ec g\u00e2y ra s\u1ef1 thay \u0111\u1ed5i n\u00e0y?\u201d v\u00e0 \u201cS\u1ef1 thay \u0111\u1ed5i n\u00e0y c\u00f3 th\u1ec3 x\u1ea3y ra t\u1eeb m\u1ecdi tr\u1ea1ng th\u00e1i kh\u00f4ng?\u201d<\/p>\n

              B\u01b0\u1edbc 5: Th\u00eam \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7<\/h3>\n

              Tinh ch\u1ec9nh c\u00e1c chuy\u1ec3n \u0111\u1ed5i b\u1eb1ng c\u00e1ch th\u00eam logic. N\u1ebfu m\u1ed9t chuy\u1ec3n \u0111\u1ed5i ch\u1ec9 x\u1ea3y ra trong c\u00e1c \u0111i\u1ec1u ki\u1ec7n d\u1eef li\u1ec7u c\u1ee5 th\u1ec3, h\u00e3y th\u00eam m\u1ed9t \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 trong d\u1ea5u ngo\u1eb7c (v\u00ed d\u1ee5: “[s\u1ed1 d\u01b0 > 0]<\/code>).<\/p>\n

              B\u01b0\u1edbc 6: X\u00e1c \u0111\u1ecbnh c\u00e1c h\u00e0nh \u0111\u1ed9ng<\/h3>\n

              X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c d\u1ee5ng ph\u1ee5. D\u1eef li\u1ec7u n\u00e0o \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt? Th\u00f4ng b\u00e1o n\u00e0o \u0111\u01b0\u1ee3c g\u1eedi? Nh\u1eadt k\u00fd n\u00e0o \u0111\u01b0\u1ee3c ghi? \u0110i\u1ec1u n\u00e0y li\u00ean k\u1ebft s\u01a1 \u0111\u1ed3 v\u1edbi logic th\u1ef1c thi.<\/p>\n

              \u26a0\ufe0f Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 gi\u1ea3i ph\u00e1p<\/h2>\n

              Ngay c\u1ea3 nh\u1eefng nh\u00e0 thi\u1ebft k\u1ebf gi\u00e0u kinh nghi\u1ec7m c\u0169ng g\u1eb7p ph\u1ea3i th\u00e1ch th\u1ee9c khi m\u00f4 h\u00ecnh h\u00f3a v\u00f2ng \u0111\u1eddi. Nh\u1eadn di\u1ec7n s\u1edbm nh\u1eefng c\u00e1i b\u1eaby n\u00e0y s\u1ebd ti\u1ebft ki\u1ec7m \u0111\u00e1ng k\u1ec3 c\u00f4ng s\u1ee9c t\u00e1i c\u1ea5u tr\u00fac v\u1ec1 sau.<\/p>\n

                \n
              • S\u1ef1 b\u00f9ng n\u1ed5 tr\u1ea1ng th\u00e1i:<\/strong> T\u1ea1o ra qu\u00e1 nhi\u1ec1u tr\u1ea1ng th\u00e1i ph\u00e2n nh\u00e1nh kh\u00f4ng ki\u1ec3m so\u00e1t \u0111\u01b0\u1ee3c.
                Gi\u1ea3i ph\u00e1p:<\/em> S\u1eed d\u1ee5ng tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p \u0111\u1ec3 nh\u00f3m c\u00e1c h\u00e0nh vi t\u01b0\u01a1ng t\u1ef1 v\u00e0 tr\u1eebu t\u01b0\u1ee3ng h\u00f3a logic chung.<\/li>\n
              • Chuy\u1ec3n ti\u1ebfp treo:<\/strong> \u0110\u1ec3 c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng c\u00f3 chuy\u1ec3n ti\u1ebfp \u0111i ra (ch\u1ebft c\u1ee9ng).
                Gi\u1ea3i ph\u00e1p:<\/em> Xem x\u00e9t t\u1eebng tr\u1ea1ng th\u00e1i \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o c\u00f3 \u0111\u01b0\u1eddng d\u1eabn \u0111\u1ebfn tr\u1ea1ng th\u00e1i cu\u1ed1i c\u00f9ng ho\u1eb7c tr\u1ea1ng th\u00e1i kh\u00f4i ph\u1ee5c h\u1ee3p l\u1ec7.<\/li>\n
              • S\u1ef1 ki\u1ec7n ng\u1ea7m \u0111\u1ecbnh:<\/strong> Gi\u1ea3 \u0111\u1ecbnh c\u00e1c s\u1ef1 ki\u1ec7n x\u1ea3y ra m\u00e0 kh\u00f4ng \u0111\u1ecbnh ngh\u0129a ch\u00fang.
                Gi\u1ea3i ph\u00e1p:<\/em> Li\u1ec7t k\u00ea r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c k\u00edch ho\u1ea1t b\u00ean ngo\u00e0i v\u00e0 k\u00edch ho\u1ea1t b\u00ean trong.<\/li>\n
              • Logic ch\u1ed3ng ch\u00e9o:<\/strong> C\u00f3 nhi\u1ec1u chuy\u1ec3n ti\u1ebfp k\u00edch ho\u1ea1t c\u00f9ng m\u1ed9t h\u00e0nh \u0111\u1ed9ng m\u00e0 kh\u00f4ng ph\u00e2n bi\u1ec7t.
                Gi\u1ea3i ph\u00e1p:<\/em> H\u1ee3p nh\u1ea5t c\u00e1c h\u00e0nh \u0111\u1ed9ng khi c\u00f3 th\u1ec3 ho\u1eb7c s\u1eed d\u1ee5ng h\u00e0nh \u0111\u1ed9ng v\u00e0o\/ra trong c\u00e1c tr\u1ea1ng th\u00e1i.<\/li>\n<\/ul>\n

                \ud83e\uddea X\u00e1c th\u1ef1c v\u00e0 ki\u1ec3m th\u1eed<\/h2>\n

                S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 m\u1ed9t b\u1ea3n \u0111\u1eb7c t\u1ea3. N\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c th\u1ef1c d\u1ef1a tr\u00ean h\u00e0nh vi th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng. C\u00e1c chi\u1ebfn l\u01b0\u1ee3c ki\u1ec3m th\u1eed ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c tr\u1ea1ng th\u00e1i v\u00e0 chuy\u1ec3n ti\u1ebfp \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a.<\/p>\n

                \u0110\u1ed9 bao ph\u1ee7 tr\u1ea1ng th\u00e1i<\/h3>\n

                \u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed bao ph\u1ee7 m\u1ecdi tr\u1ea1ng th\u00e1i trong s\u01a1 \u0111\u1ed3. \u0110i\u1ec1u n\u00e0y x\u00e1c minh r\u1eb1ng \u0111\u1ed1i t\u01b0\u1ee3ng c\u00f3 th\u1ec3 v\u00e0o v\u00e0 duy tr\u00ec trong m\u1ecdi \u0111i\u1ec1u ki\u1ec7n \u0111\u00e3 \u0111\u1ecbnh ngh\u0129a.<\/p>\n

                \u0110\u1ed9 bao ph\u1ee7 chuy\u1ec3n ti\u1ebfp<\/h3>\n

                Ki\u1ec3m th\u1eed m\u1ecdi m\u0169i t\u00ean k\u1ebft n\u1ed1i c\u00e1c tr\u1ea1ng th\u00e1i. X\u00e1c minh r\u1eb1ng s\u1ef1 ki\u1ec7n k\u00edch ho\u1ea1t chuy\u1ec3n ti\u1ebfp \u0111\u00fang v\u00e0 c\u00e1c \u0111i\u1ec1u ki\u1ec7n b\u1ea3o v\u1ec7 ch\u1eb7n c\u00e1c chuy\u1ec3n ti\u1ebfp kh\u00f4ng h\u1ee3p l\u1ec7.<\/p>\n

                X\u1eed l\u00fd ngo\u1ea1i l\u1ec7<\/h3>\n

                M\u00f4 h\u00ecnh h\u00f3a nh\u1eefng g\u00ec x\u1ea3y ra khi s\u1ef1 c\u1ed1 x\u1ea3y ra. Th\u00eam c\u00e1c tr\u1ea1ng th\u00e1i cho c\u00e1c k\u1ecbch b\u1ea3n \u201cL\u1ed7i\u201d ho\u1eb7c \u201cTh\u1eed l\u1ea1i\u201d. M\u1ed9t s\u01a1 \u0111\u1ed3 v\u00f2ng \u0111\u1eddi m\u1ea1nh m\u1ebd ph\u1ea3i x\u1eed l\u00fd c\u00e1c l\u1ed7i m\u1ed9t c\u00e1ch tinh t\u1ebf.<\/p>\n

                \ud83d\udd04 C\u00e1c m\u1eabu th\u1ef1c thi<\/h2>\n

                Vi\u1ec7c chuy\u1ec3n \u0111\u1ed5i s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i th\u00e0nh m\u00e3 y\u00eau c\u1ea7u m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn k\u1ef7 lu\u1eadt. M\u1ee5c ti\u00eau l\u00e0 gi\u1eef cho logic t\u00e1ch bi\u1ec7t kh\u1ecfi d\u1eef li\u1ec7u c\u1ed1t l\u00f5i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n

                1. M\u1eabu State<\/h3>\n

                M\u1eabu thi\u1ebft k\u1ebf State \u0111\u00f3ng g\u00f3i h\u00e0nh vi cho t\u1eebng tr\u1ea1ng th\u00e1i v\u00e0o c\u00e1c l\u1edbp ri\u00eang bi\u1ec7t. \u0110\u1ed1i t\u01b0\u1ee3ng ch\u00ednh \u1ee7y th\u00e1c h\u00e0nh vi cho \u0111\u1ed1i t\u01b0\u1ee3ng tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i. \u0110i\u1ec1u n\u00e0y gi\u00fap lo\u1ea1i b\u1ecf logic \u0111i\u1ec1u ki\u1ec7n (if\/switch) kh\u1ecfi l\u1edbp ch\u00ednh.<\/p>\n

                2. Logic Switch-Case<\/h3>\n

                \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng \u0111\u01a1n gi\u1ea3n h\u01a1n, bi\u1ebfn tr\u1ea1ng th\u00e1i k\u1ebft h\u1ee3p v\u1edbi c\u1ea5u tr\u00fac switch-case l\u00e0 hi\u1ec7u qu\u1ea3. M\u1eb7c d\u00f9 k\u00e9m linh ho\u1ea1t h\u01a1n M\u1eabu State, n\u00f3 d\u1ec5 b\u1ea3o tr\u00ec h\u01a1n \u0111\u1ed1i v\u1edbi c\u00e1c lu\u1ed3ng tuy\u1ebfn t\u00ednh.<\/p>\n

                3. H\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n<\/h3>\n

                C\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p th\u01b0\u1eddng x\u1eed l\u00fd s\u1ef1 ki\u1ec7n m\u1ed9t c\u00e1ch b\u1ea5t \u0111\u1ed3ng b\u1ed9. Vi\u1ec7c tri\u1ec3n khai h\u00e0ng \u0111\u1ee3i s\u1ef1 ki\u1ec7n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c chuy\u1ec3n \u0111\u1ed5i \u0111\u01b0\u1ee3c x\u1eed l\u00fd theo \u0111\u00fang th\u1ee9 t\u1ef1 x\u1ea3y ra, ng\u0103n ng\u1eeba c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ea1nh tranh.<\/p>\n

                \ud83d\udcc8 B\u1ea3o tr\u00ec v\u00e0 Ph\u00e1t tri\u1ec3n<\/h2>\n

                Y\u00eau c\u1ea7u ph\u1ea7n m\u1ec1m thay \u0111\u1ed5i. V\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng c\u0169ng kh\u00f4ng ngo\u1ea1i l\u1ec7. M\u1ed9t bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c t\u00e0i li\u1ec7u h\u00f3a t\u1ed1t \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t t\u00e0i s\u1ea3n s\u1ed1ng \u0111\u1ed9ng, ph\u00e1t tri\u1ec3n c\u00f9ng v\u1edbi h\u1ec7 th\u1ed1ng.<\/p>\n

                  \n
                • Ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n:<\/strong>H\u00e3y coi bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i nh\u01b0 m\u00e3 ngu\u1ed3n. L\u01b0u tr\u1eef ch\u00fang trong c\u00e1c h\u1ec7 th\u1ed1ng ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n \u0111\u1ec3 theo d\u00f5i c\u00e1c thay \u0111\u1ed5i theo th\u1eddi gian.<\/li>\n
                • Ph\u00e2n t\u00edch t\u00e1c \u0111\u1ed9ng:<\/strong>Khi th\u00eam m\u1ed9t tr\u1ea1ng th\u00e1i m\u1edbi, h\u00e3y ki\u1ec3m tra t\u1ea5t c\u1ea3 c\u00e1c chuy\u1ec3n \u0111\u1ed5i v\u00e0o v\u00e0 ra \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n.<\/li>\n
                • T\u00e1i c\u1ea5u tr\u00fac:<\/strong>N\u1ebfu m\u1ed9t bi\u1ec3u \u0111\u1ed3 tr\u1edf n\u00ean qu\u00e1 d\u00e0y \u0111\u1eb7c, h\u00e3y chia c\u00e1c tr\u1ea1ng th\u00e1i t\u1ed5ng h\u1ee3p th\u00e0nh c\u00e1c th\u1ef1c th\u1ec3 ri\u00eang bi\u1ec7t ho\u1eb7c gi\u1edbi thi\u1ec7u c\u00e1c l\u1edbp tr\u1eebu t\u01b0\u1ee3ng m\u1edbi.<\/li>\n<\/ul>\n

                  \ud83d\udca1 \u0110i\u1ec3m ch\u00ednh c\u1ea7n ghi nh\u1edb<\/h2>\n

                  Bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 c\u00f4ng c\u1ee5 c\u01a1 b\u1ea3n \u0111\u1ec3 qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p trong Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u01b0\u1edbng \u0110\u1ed1i t\u01b0\u1ee3ng. Ch\u00fang cung c\u1ea5p m\u1ed9t h\u1ee3p \u0111\u1ed3ng tr\u1ef1c quan r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng h\u00e0nh x\u1eed theo th\u1eddi gian.<\/p>\n

                  B\u1eb1ng c\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i, chuy\u1ec3n \u0111\u1ed5i v\u00e0 s\u1ef1 ki\u1ec7n, c\u00e1c nh\u00f3m c\u00f3 th\u1ec3:<\/p>\n

                    \n
                  • Gi\u1ea3m s\u1ef1 m\u01a1 h\u1ed3 trong y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng.<\/li>\n
                  • X\u00e1c \u0111\u1ecbnh s\u1edbm c\u00e1c \u0111i\u1ec3m t\u1eafc ngh\u1ebdn v\u00e0 c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng th\u1ec3 truy c\u1eadp.<\/li>\n
                  • H\u1ed7 tr\u1ee3 giao ti\u1ebfp gi\u1eefa c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt v\u00e0 phi k\u1ef9 thu\u1eadt.<\/li>\n
                  • C\u1ea3i thi\u1ec7n ph\u1ea1m vi ki\u1ec3m th\u1eed b\u1eb1ng c\u00e1ch \u00e1nh x\u1ea1 logic th\u00e0nh c\u00e1c \u0111\u01b0\u1eddng d\u1eabn tr\u1ef1c quan.<\/li>\n<\/ul>\n

                    Vi\u1ec7c \u00e1p d\u1ee5ng k\u1ef7 lu\u1eadt n\u00e0y kh\u00f4ng lo\u1ea1i b\u1ecf s\u1ef1 ph\u1ee9c t\u1ea1p, nh\u01b0ng n\u00f3 gi\u00fap qu\u1ea3n l\u00fd \u0111\u01b0\u1ee3c s\u1ef1 ph\u1ee9c t\u1ea1p \u0111\u00f3. Khi c\u00e1c h\u1ec7 th\u1ed1ng ph\u00e1t tri\u1ec3n, nhu c\u1ea7u v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a h\u00e0nh vi c\u00f3 c\u1ea5u tr\u00fac ng\u00e0y c\u00e0ng t\u0103ng. \u0110\u1ea7u t\u01b0 th\u1eddi gian v\u00e0o c\u00e1c bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i ch\u00ednh x\u00e1c s\u1ebd mang l\u1ea1i l\u1ee3i \u00edch v\u1ec1 \u0111\u1ed9 tin c\u1eady v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

                    H\u00e3y nh\u1edb c\u1eadp nh\u1eadt c\u00e1c bi\u1ec3u \u0111\u1ed3 th\u01b0\u1eddng xuy\u00ean. M\u1ed9t bi\u1ec3u \u0111\u1ed3 l\u1ed7i th\u1eddi c\u00f2n t\u1ec7 h\u01a1n l\u00e0 kh\u00f4ng c\u00f3 bi\u1ec3u \u0111\u1ed3 n\u00e0o c\u1ea3. C\u00e1c cu\u1ed9c r\u00e0 so\u00e1t \u0111\u1ecbnh k\u1ef3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u00f4 h\u00ecnh v\u1eabn ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c h\u00e0nh vi th\u1ef1c t\u1ebf c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

                    Trong b\u1ed1i c\u1ea3nh ph\u1ee9c t\u1ea1p c\u1ee7a Ph\u00e2n t\u00edch v\u00e0 Thi\u1ebft k\u1ebf H\u01b0\u1edbng \u0110\u1ed1i t\u01b0\u1ee3ng (OOAD), h\u00e0nh vi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng th\u01b0\u1eddng quan tr\u1ecdng kh\u00f4ng k\u00e9m c\u1ea5u tr\u00fac c\u1ee7a n\u00f3.…<\/p>\n","protected":false},"author":1,"featured_media":4088,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i cho v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p | H\u01b0\u1edbng d\u1eabn OOAD","_yoast_wpseo_metadesc":"T\u00ecm hi\u1ec3u c\u00e1ch s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng trong thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng. Bao g\u1ed3m c\u00e1c chuy\u1ec3n \u0111\u1ed5i, tr\u1ea1ng th\u00e1i v\u00e0 c\u00e1ch x\u1eed l\u00fd s\u1ef1 ph\u1ee9c t\u1ea1p m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[105],"tags":[103,104],"class_list":["post-4087","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-object-oriented-analysis-and-design","tag-academic","tag-object-oriented-analysis-and-design"],"yoast_head":"\nBi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i cho v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p | H\u01b0\u1edbng d\u1eabn OOAD<\/title>\n<meta name=\"description\" content=\"T\u00ecm hi\u1ec3u c\u00e1ch s\u1eed d\u1ee5ng bi\u1ec3u \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng trong thi\u1ebft k\u1ebf h\u01b0\u1edbng \u0111\u1ed1i t\u01b0\u1ee3ng. 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