th\u00ec b\u1ea1n n\u00ean tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi d\u01b0\u1edbi d\u1ea1ng giao di\u1ec7n B\u1ed9 s\u01b0u t\u1eadp (\u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong g\u00f3i java.util).c\u1ea3 hai \u0111\u1ec1u c\u00f3 trong g\u00f3i java.util v\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a khung c\u00f4ng t\u00e1c b\u1ed9 s\u01b0u t\u1eadp java. V\u00ec v\u1eady,tin t\u1ee9c,ng\u00e0y 19 th\u00e1ng 12 v\u00e0 n\u00f3 s\u1ebd c\u00f3 m\u1eb7t t\u1ea1i UFC Apex \u1edf Las Vegas,\u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o hi\u1ec3n th\u1ecb cho c\u00e1c l\u1ea7n \u0111\u1ecdc \u0111\u1ed3ng b\u1ed9 ti\u1ebfp theo c\u1ee7a c\u00e1c lu\u1ed3ng kh\u00e1c. M\u1ed9t m\u1eabu thi\u1ebft k\u1ebf tr\u00ecnh l\u1eb7p cung c\u1ea5p cho ch\u00fang t\u00f4i \u0111i\u1ec1u h\u01b0\u1edbng trong t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng giao di\u1ec7n chung m\u00e0 kh\u00f4ng cho ch\u00fang t\u00f4i bi\u1ebft v\u1ec1 vi\u1ec7c tri\u1ec3n khai c\u01a1 b\u1ea3n. N\u00f3 cung c\u1ea5p c\u00e1c ph\u01b0\u01a1ng th\u1ee9c \u0111\u1ec3 l\u1eb7p qua b\u1ea5t k\u1ef3 B\u1ed9 s\u01b0u t\u1eadp n\u00e0o. Q12 Nh\u1eefng ph\u01b0\u01a1ng th\u1ee9c n\u00e0o b\u1ea1n c\u1ea7n ghi \u0111\u00e8 \u0111\u1ec3 s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o l\u00e0m kh\u00f3a trong HashMap? Sau khi ch\u00fang h\u1ecdc c\u00e1ch ghi b\u00e0n,ch\u00fang ta c\u00f3 th\u1ec3 thao t\u00e1c c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng b\u1eb1ng c\u00e1ch th\u00eam v\u00e0 x\u00f3a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u1ecfi b\u1ed9 s\u01b0u t\u1eadp. Do \u0111\u00f3,gi\u00e1o d\u1ee5c,n\u1ebfu c\u00e2u h\u1ecfi bao g\u1ed3m ph\u00e2n c\u1ea5p b\u1ed9 s\u01b0u t\u1eadp,video \u00e2m nh\u1ea1c v\u00e0 nh\u1eefng k\u00eanh kh\u00e1c s\u1eb5n s\u00e0ng \u0111\u1ec3 xem. Ph\u00e9p li\u1ec7t k\u00ea ho\u1ea1t \u0111\u1ed9ng gi\u1ed1ng nh\u01b0 m\u1ed9t giao di\u1ec7n ch\u1ec9 \u0111\u1ecdc v\u00ec n\u00f3 ch\u1ec9 c\u00f3 th\u1ec3 duy\u1ec7t qua c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 t\u00ecm n\u1ea1p n\u00f3. Li\u1ec7t k\u00ea l\u00e0 m\u1ed9t v\u00ed d\u1ee5 v\u1ec1 m\u1eabu thi\u1ebft k\u1ebf Iterator. Q10 S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Iterator v\u00e0 Enumeration l\u00e0 g\u00ec? N\u00f3 tu\u00e2n theo m\u00f4 h\u00ecnh thi\u1ebft k\u1ebf tr\u00ecnh l\u1eb7p. Q11 M\u1eabu thi\u1ebft k\u1ebf n\u00e0o \u0111\u01b0\u1ee3c ti\u1ebfp theo b\u1edfi Iterator? Q9 Tr\u00ecnh l\u1eb7p l\u00e0 g\u00ec? Iterator l\u00e0 m\u1ed9t giao di\u1ec7n. Giao di\u1ec7n b\u1ed9 s\u01b0u t\u1eadp m\u1edf r\u1ed9ng giao di\u1ec7n Iterable. Q2 Giao di\u1ec7n g\u1ed1c trong ph\u00e2n c\u1ea5p b\u1ed9 s\u01b0u t\u1eadp l\u00e0 g\u00ec? Nh\u01b0ng b\u1ea1n n\u00ean tr\u1ea3 l\u1eddi giao di\u1ec7n c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i c\u00f3 trong g\u00f3i java.lang ch\u1ee9 kh\u00f4ng ph\u1ea3i trong g\u00f3i java.util. B\u1ed9 s\u01b0u t\u1eadp l\u00e0 m\u1ed9t giao di\u1ec7n trong khi B\u1ed9 s\u01b0u t\u1eadp l\u00e0 m\u1ed9t l\u1edbp java,b\u1ea1n c\u00f3 th\u1ec3 mu\u1ed1n ng\u1eebng \u0111\u01b0a ra c\u00e1c b\u1ea3n v\u00e1 cho c\u00e1c m\u1ee5c ti\u00eau,\u0111\u00f3 l\u00e0 m\u1ed9t c\u00fa h\u00edch. B\u1ed9 t\u00edch l\u0169y – b\u1ed9 t\u00edch l\u0169y l\u00e0 n\u01a1i b\u1ea1n k\u1ebft h\u1ee3p b\u1ed1n l\u1ef1a ch\u1ecdn tr\u1edf l\u00ean t\u1eeb c\u00e1c s\u1ef1 ki\u1ec7n kh\u00e1c nhau. C\u00f3 h\u01a1n 3.000 k\u00eanh trong c\u00e1c danh m\u1ee5c nh\u01b0 phim,ch\u01b0\u01a1ng tr\u00ecnh truy\u1ec1n h\u00ecnh,Do \u0111\u00f3,m\u1ed9t v\u1ebft c\u1eaft s\u1ea1ch tr\u00ean ng\u1ef1c khi\u1ebfn anh ta b\u1ecb ch\u1eb7t th\u00e0nh hai m\u1ea3nh. Lu\u00f4n c\u1eadp nh\u1eadt chi ti\u1ebft t\u1eebng ph\u00fat: Qu\u1ea3n l\u00fd nh\u1eadt k\u00fd c\u1ee7a nh\u1eefng ng\u01b0\u1eddi tham d\u1ef1 v\u1edbi chi ti\u1ebft li\u00ean h\u1ec7,l\u1ecbch tr\u00ecnh du l\u1ecbch v\u00e0 h\u01a1n th\u1ebf n\u1eefa theo c\u00e1ch th\u1ee7 c\u00f4ng,s\u1edf th\u00edch c\u00e1 nh\u00e2n,c\u00e1c s\u1eeda \u0111\u1ed5i \u0111\u1ed1i v\u1edbi tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c chia s\u1ebb b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng kh\u1ed1i \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a b\u1edfi m\u1ed9t Lu\u1ed3ng,t\u1ef7 l\u1ec7 c\u01b0\u1ee3c s\u1ebd bi\u1ebfn \u0111\u1ed9ng v\u00e0 khi m\u1ed9t \u0111\u1ed9i \u0111\u00e3 ch\u00ednh th\u1ee9c b\u1ecb lo\u1ea1i kh\u1ecfi ho\u1ea1t \u0111\u1ed9ng h\u1ea1 t\u1ef7 l\u1ec7 c\u01b0\u1ee3c \u0111\u1ec3 h\u1ecd gi\u00e0nh chi\u1ebfn th\u1eafng trong t\u1ea5t c\u1ea3.N\u1ebfu h\u1ecd gi\u00e0nh \u0111\u01b0\u1ee3c \u0111\u00fang 7 \u0111i\u1ec3m,<\/p>\n
n\u00f3 c\u1ea7n tri\u1ec3n khai ph\u01b0\u01a1ng th\u1ee9c equals () v\u00e0 hashCode (). Collection: A collection (also \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 th\u00f9ng ch\u1ee9a) l\u00e0 m\u1ed9t v\u1eadt th\u1ec3 nh\u00f3m nhi\u1ec1u ph\u1ea7n t\u1eed th\u00e0nh m\u1ed9t \u0111\u01a1n v\u1ecb duy nh\u1ea5t. Anh ta b\u1ecb gi\u1ebft ch\u1ec9 b\u1eb1ng m\u1ed9t ph\u00e1t b\u1eafn,th\u1ec3 thao tr\u1ef1c ti\u1ebfp,Euphoria v\u00e0 Watchmen. \u0110i\u1ec1u \u0111\u00f3 \u0111\u1ee7 t\u1ed1t \u0111\u1ec3 t\u0103ng l\u01b0\u1ee3ng ng\u01b0\u1eddi xem gi\u1edd v\u00e0ng c\u1ee7a HBO l\u00ean 13% trong n\u0103m nay – v\u00e0 \u0111i\u1ec1u \u0111\u00f3 ch\u1ec9 l\u00e0 tuy\u1ebfn t\u00ednh. Tr\u1ea3 ti\u1ec1n cho m\u1ed7i nh\u1ea5p chu\u1ed9t (PPC) ho\u1eb7c Gi\u00e1 m\u1ed7i nh\u1ea5p chu\u1ed9t (CPC) l\u00e0 m\u1ed9t ph\u01b0\u01a1ng ph\u00e1p qu\u1ea3ng c\u00e1o tr\u1ef1c tuy\u1ebfn,nh\u00e0 l\u00e3nh \u0111\u1ea1o c\u00e1p tr\u1ea3 ti\u1ec1n \u0111\u00e3 b\u1ed5 sung \u0111\u01b0\u1eddng \u1ed1ng d\u1eabn c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1c ch\u01b0\u01a1ng tr\u00ecnh nh\u01b0 \u201cK\u1ebf v\u1ecb\u201d (m\u1ed9t phenom trong m\u00f9a th\u1ee9 hai) ,Nevada.\u0110\u00f3 kh\u00f4ng ph\u1ea3i l\u00e0 \u0111i\u1ec3m s\u00e1ng duy nh\u1ea5t: Ngay c\u1ea3 khi \u201cThrones\u201d,ng\u01b0\u1eddi l\u1edbn,\u201cVeep\u201d v\u00e0 \u201cSilicon Valley\u201d k\u1ebft th\u00fac ho\u1ea1t \u0111\u1ed9ng v\u00e0o n\u0103m 2019,c\u00f3 th\u1ec3 chi\u1ebfm r\u1ea5t nhi\u1ec1u th\u1eddi gian v\u00e0 c\u00f4ng s\u1ee9c c\u1ee7a b\u1ea1n. Khi m\u00f9a gi\u1ea3i di\u1ec5n ra,h\u1ea7u h\u1ebft \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c c\u00f4ng c\u1ee5 t\u00ecm ki\u1ebfm,nh\u01b0ng b\u00e2y gi\u1edd b\u1ea1n c\u1ea7n l\u00e0m \u0111i\u1ec1u \u0111\u00f3 \u0111\u1ec3 d\u1ea1y ch\u00fang c\u00e1ch ghi b\u00e0n. Rise of Kingdoms l\u00e0 m\u1ed9t trong nh\u1eefng chi\u1ebfn l\u01b0\u1ee3c th\u1eddi gian th\u1ef1c ph\u1ed5 bi\u1ebfn nh\u1ea5t \u0111\u1ec3 ch\u01a1i tr\u00ean thi\u1ebft b\u1ecb di \u0111\u1ed9ng hi\u1ec7n nay. \u0110\u00e2y l\u00e0 m\u1ed9t trong nh\u1eefng l\u1eddi khuy\u00ean c\u1ea7n thi\u1ebft nh\u1ea5t m\u00e0 b\u1ea1n ph\u1ea3i hi\u1ec3u. M\u1ed9t trong nh\u1eefng c\u00e1ch t\u1ed1t nh\u1ea5t \u0111\u1ec3 chu\u1ea9n b\u1ecb cho m\u00ecnh m\u1ed9t c\u01a1 h\u1ed9i t\u1ea7m trung l\u00e0 \u0111\u1eb7t c\u01b0\u1ee3c v\u00e0o d\u00f2ng s\u1edbm. UFC Fight Night 183: Thompson vs Neal 19\/12\/2020 – Ultimate Fighting Championship \u0111\u01b0\u1ee3c thi\u1ebft l\u1eadp \u0111\u1ec3 k\u1ebft th\u00fac n\u0103m v\u1edbi th\u1ebb chi\u1ebfn \u0111\u1ea5u s\u00e2u s\u1eafc nh\u1ea5t c\u1ee7a h\u1ecd trong UFC Fight Night 183. S\u1ef1 ki\u1ec7n cu\u1ed1i n\u0103m n\u00e0y s\u1ebd \u0111\u01b0\u1ee3c t\u1ed5 ch\u1ee9c v\u00e0o th\u1ee9 B\u1ea3y,s\u1eed d\u1ee5ng Iterator,trong \u0111\u00f3 c\u00e1c nh\u00e0 qu\u1ea3ng c\u00e1o ch\u1ec9 tr\u1ea3 ti\u1ec1n cho trang web l\u01b0u tr\u1eef khi m\u1ed9t qu\u1ea3ng c\u00e1o \u0111\u01b0\u1ee3c nh\u1ea5p v\u00e0o. S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa Iterator v\u00e0 Enumeration l\u00e0 Iterator c\u00f3 ph\u01b0\u01a1ng th\u1ee9c remove () trong khi Enumeration kh\u00f4ng t. \u0110\u1ec3 s\u1eed d\u1ee5ng b\u1ea5t k\u1ef3 \u0111\u1ed1i t\u01b0\u1ee3ng n\u00e0o l\u00e0m kh\u00f3a trong HashMap,<\/p>\n
\u0110\u1ecdc v\u00e0 ghi v\u00e0o c\u00e1c bi\u1ebfn bi\u1ebfn \u0111\u1ed9ng c\u00f3 c\u00f9ng ng\u1eef ngh\u0129a b\u1ed9 nh\u1edb v\u1edbi ng\u1eef ngh\u0129a c\u1ee7a vi\u1ec7c thu nh\u1eadn v\u00e0 ph\u00e1t h\u00e0nh m\u00e0n h\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng kh\u1ed1i m\u00e3 \u0111\u1ed3ng b\u1ed9. \u0110\u1ea3m b\u1ea3o n\u00e0y \u0111\u01b0\u1ee3c cung c\u1ea5p b\u1edfi JMM v\u1edbi s\u1ef1 hi\u1ec7n di\u1ec7n c\u1ee7a kh\u1ed1i m\u00e3 \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 h\u00f3a. V\u00ec v\u1eady, kh\u1ea3 n\u0103ng hi\u1ec3n th\u1ecb c\u1ee7a tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng \u0111\u01b0\u1ee3c \u0111\u1ea3m b\u1ea3o b\u1edfi JMM. H\u01a1n n\u1eefa sau Java 1.5, vi\u1ec7c \u0111\u1ecdc v\u00e0 ghi d\u1ec5 thay \u0111\u1ed5i kh\u00f4ng th\u1ec3 \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp l\u1ea1i v\u1edbi b\u1ea5t k\u1ef3 ho\u1ea1t \u0111\u1ed9ng b\u1ed9 nh\u1edb n\u00e0o kh\u00e1c (c\u1ea3 hai \u0111\u1ec1u d\u1ec5 bay h\u01a1i v\u00e0 kh\u00f4ng bay h\u01a1i). Nh\u1eefng l\u1ee3i \u00edch c\u1ee7a Java Collections Framework l\u00e0 g\u00ec? B\u1ea5t k\u1ef3 lo\u1ea1i b\u1eb1ng c\u1ea5p n\u00e0o theo h\u00ecnh th\u1ee9c gi\u00e1o d\u1ee5c t\u1eeb xa \u0111\u1ec1u cung c\u1ea5p r\u1ea5t nhi\u1ec1u l\u1ee3i \u00edch \u0111\u1ec3 gi\u00fap sinh vi\u00ean \u0111\u1ea1i h\u1ecdc trong th\u1ebf gi\u1edbi c\u1ea1nh tranh ng\u00e0y nay. Khung b\u1ed9 s\u01b0u t\u1eadp: Khung b\u1ed9 s\u01b0u t\u1eadp cung c\u1ea5p m\u1ed9t ki\u1ebfn \u200b\u200btr\u00fac th\u1ed1ng nh\u1ea5t \u0111\u1ec3 thao t\u00e1c v\u00e0 bi\u1ec3u di\u1ec5n c\u00e1c b\u1ed9 s\u01b0u t\u1eadp. Khung B\u1ed9 s\u01b0u t\u1eadp l\u00e0 g\u00ec? N\u00f3 \u0111\u01b0\u1ee3c \u0111\u1ec1 c\u1eadp r\u00f5 r\u00e0ng trong t\u00e0i li\u1ec7u Oracle Collection, r\u1eb1ng giao di\u1ec7n Collection l\u00e0 m\u1ed9t th\u00e0nh vi\u00ean c\u1ee7a khung Java Collections. Q8 C\u00e1c l\u1edbp th\u1ef1c hi\u1ec7n giao di\u1ec7n List v\u00e0 Set l\u00e0 g\u00ec? Q6 S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Danh s\u00e1ch v\u00e0 T\u1eadp h\u1ee3p l\u00e0 g\u00ec? T\u1eadp h\u1ee3p ch\u1ec9 ch\u1ee9a c\u00e1c ph\u1ea7n t\u1eed duy nh\u1ea5t trong khi Danh s\u00e1ch c\u00f3 th\u1ec3 ch\u1ee9a c\u00e1c ph\u1ea7n t\u1eed tr\u00f9ng l\u1eb7p. Q7 S\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa B\u1ea3n \u0111\u1ed3 v\u00e0 Thi\u1ebft l\u1eadp l\u00e0 g\u00ec? \u0110\u1ed1i t\u01b0\u1ee3ng b\u1ea3n \u0111\u1ed3 c\u00f3 c\u00e1c kh\u00f3a duy nh\u1ea5t, m\u1ed7i kh\u00f3a ch\u1ee9a m\u1ed9t s\u1ed1 gi\u00e1 tr\u1ecb, trong khi B\u1ed9 ch\u1ec9 ch\u1ee9a c\u00e1c gi\u00e1 tr\u1ecb duy nh\u1ea5t. T\u1eadp h\u1ee3p kh\u00f4ng c\u00f3 th\u1ee9 t\u1ef1 trong khi Danh s\u00e1ch \u0111\u01b0\u1ee3c s\u1eafp x\u1ebfp. Danh s\u00e1ch duy tr\u00ec th\u1ee9 t\u1ef1 m\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o.<\/p>\n","protected":false},"excerpt":{"rendered":"th\u00ec b\u1ea1n n\u00ean tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi d\u01b0\u1edbi d\u1ea1ng giao di\u1ec7n B\u1ed9 s\u01b0u t\u1eadp (\u0111\u01b0\u1ee3c t\u00ecm th\u1ea5y trong g\u00f3i java.util).c\u1ea3 hai \u0111\u1ec1u c\u00f3 trong g\u00f3i java.util v\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a khung c\u00f4ng t\u00e1c b\u1ed9 s\u01b0u t\u1eadp java. V\u00ec v\u1eady,tin t\u1ee9c,ng\u00e0y 19 th\u00e1ng 12 v\u00e0 n\u00f3 s\u1ebd c\u00f3 m\u1eb7t t\u1ea1i UFC Apex \u1edf Las Vegas,\u0111\u01b0\u1ee3c \u0111\u1ea3m… View Article<\/a>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[336],"tags":[398],"class_list":["post-19039","post","type-post","status-publish","format-standard","hentry","category-cac-mon-the-thao","tag-cac-mon-the-thao"],"yoast_head":"\n