15ãæã750æé
Javaã¯ãããšäœã®é¢ä¿ãããã®ã§ããããïŒ ç§ãåããŠããçç£æœèšã§ã¯ãäžåžãã 1C ãå匷ããããã«å§ããããŸããããã®ãœãããŠã§ã¢ã¯èª°ããç¥ã£ãŠããŸãããªãã ãã§ããïŒYouTube ãéã㊠1C ã®ã¬ãã¹ã³ãèŠã€ããŠãèŠèŽãå§ããŸãããã¬ãã¹ã³èªäœã«å ããŠã1C ã«é¢é£ãããããªããã£ãŒãã«è¡šç€ºããå§ããŸããããã®ãã¡ã® 1 ã€ã¯ãã1C ããã°ã©ããŒãšããŠæã« 30 äžã皌ãæ¹æ³ããšãããã®ã§ãããç§ã¯ 2002 幎ããã€ã³ã¿ãŒããããå©çšããŠãããä¿¡ããããªãã»ã©ã®ãéã«é¢ããããŸããŸãªæŽŸæãªèŠåºããããããèŠãŠããŸãããã¯ãªãã¯ããŠãã ãããã§ããç§ã¯ãã®äººãä¿¡ããŸããã圌ã®ååã¯ã¬ãªã³ãã§ãã»ã€ãªã€ã§ããçµéšè±å¯ãªäººæãéçºãµãŒãã¹ãæäŸããŸããã¢ã¹ã¯ã¯ã§ã¯æ絊ã¯2500ã«ãŒãã«ã§ãé±30æéåããŠãããããããç§ã¯å¥ã®ãããªãèŠãŠããŸãå¥ã®ãããªãèŠãŸãããçµå±ã圌㯠3 ãæã§ä»äºãèŠã€ããæåéãæåã® 1 幎ã§æ 100 件ã«éããŸãããããã«ã圌ã«ããã°ãé©åãªåŠç¿æŠç¥ãéžæããã°ããããããæ©ãéæã§ããããã§ããããã«é¢ããããã€ãã®ã¬ãã¹ã³ãé²é³ããŸãããç®ãèŒããŸãããå幎床ã¯10äžã«ãŒãã«ããã¡ãããç§ã¯åœŒã®ãããªé«åºŠãªæè¡æè²ãåããŠããªããšæã£ãŠããŸããããããŠäžè¬çã«ãããããç§ã¯æããªã®ã§ãããã«è²»ããæéã¯å°ãªããªããŸãããã®ãããæåã®ä»äºã«å°±ãåã«6ãæéå匷ããæºåãã§ããŠããŸãããã€ãªã€ã¯ç§ã«ãšã£ãŠãæ¬äººãç¥ããªãã£ãæå°è
ãšãªã£ãŠãããŸããã圌ã¯ãããªã®äžã§ããæ¯æ¥åŠç¿ããããšãã 1 ã€ã®ã«ãŒã«ã説æããŸãããåºçºã§ããåŠç¿ããã®ã¯ããã»ã©ç°¡åã§ã¯ãªãããšãããããŸãããæéãçµã€ã«ã€ããŠãç§ã®éäžåã¯äœäžããŠãããŸãããã§ãç§ã¯ã€ãªã€ãä¿¡ããŠããšã«ããæ¯æ¥å匷ããŸãããç§ã¯ã1æ¥15åããå°ããªããšããå§ããŸããã2019幎12æã®ããšã§ãããããäžåºŠã«1æéãã€å匷ãå§ããããããããæ«æããŠããŸãã§ããããããããéåžžã«å°ããªè² è·ã®ãããã§ãç§ã¯ç¶ããã®ã«ååãªäœåãæã¡ãŸãããç¿æ
£ãã©ãã«ãŒãã€ã³ã¹ããŒã«ããŸããé»è©±ã«ãã21æ¥éã§ãããããã°ã©ãã³ã°1Cããéè¬ãã¡ãªã¿ã«ãæçµçã«ã¯60æ¥ã»ã©è²»ãããŸãããããäžåºŠ YouTube ã«ã¢ã¯ã»ã¹ãããšãIlya 㯠javarush ã³ãŒã¹ã䜿çšã㊠Java ã®åŠç¿ãå§ãããšèšããŸããããã®ãããžã§ã¯ãã«ã€ããŠãšãŠãç±å¿ã«è©±ããŠãããã®ã§ãç§ãèå³ãæã¡ãŸãããç§ã¯åå ããŠç¡æã¬ãã«ãã¯ãªã¢ããŸãããããããç§ã«ãšã£ãŠãã®è³Œèªæã¯é«äŸ¡ã«æããŸãããçå£ã«èããã€ããã¯ãªãã£ããçµå±ã®ãšãããJava ã¯ãæ¬ç©ã®ããšã³ãžãã¢ã®ããã®èšèªã§ãããç§ã¯ãéã皌ãããã£ãã®ã§ãã1 幎éã®å²åŒã¯ 1 æã«å°çããŸãããã£ãã®5800ã«ãŒãã«ããã®æãŸã§ã«ãå°ãªããšãä»åŸ5ã7幎ã¯åœãé¢ããããšããé¡æããããŸããããããŠCISã®å€ã§ã¯èª°ã1Cãå¿
èŠãšããŸãããã€ãŸãã1C ã¯ããåçŽãªãã¹ã®ããã«èŠããŸããããå¶éããããŸãããJava ã¯ããè€éã§ããããã€ã移è¡ããå¯èœæ§ããããŸããã€ã³ã¿ãŒããããjavarushãèªãã§ããŸããç§ã¯ã倧å€æ°ã®äººãæåã® 2 幎éã®åŠç¿äžã« Java ããã°ã©ããŒãšããŠã®æåã®ä»äºãèŠã€ããããšãã§ããããšã«æ°ã¥ããŸãããjavarush ã®å¹Žéãµãã¹ã¯ãªãã·ã§ã³ã賌å
¥ããŸããã1CãšJavaãåæã«å匷ããããšã«ããŸãããåŠç¿ã«éäžããåãéãããããšèšãããããã¢ããŒããã¯ããã¯ã25åé䜿çšããŸãããã€ãŸãã1 ç§ã«ã¯ 25 åãJava ã«ã¯ 25 åããããŸããããã»ã©å€ãã¯ãããŸããããæ¯æ¥ã§ããã€ãªã€ã1C瀟ãå
¬ç¶ãšå±ãå§ãã2020幎ã®æ¥ãç§ã¯ãã§ã«ãã«ãã³ã® 1C ã¹ã¯ãŒã«ãæ°ãæã§ä¿®äºããŠããŸãã1C:ãããã§ãã·ã§ãã«ãåãã«è¡ãããšããŠããŸããããããããã¹ãŠã®é·æãšçæãæ¯èŒæ€èšããçµæã1C ã®å匷ããã㊠Java ã«éäžããããšã«ããŸããã2020幎9æãŸã§ã¯1æ¥60ïœ90åã»ã©å匷ããŠããŸããããã®æãŸã§ã«ãç§ã¯ãã¢ããŒããã¯ããã¯ã®å¥ã®ã¢ããªã±ãŒã·ã§ã³ãååŸããŠããŸããããããã§ãä»äºãšå匷ãäž¡ç«ãããªãããæã«çŽ30æéãå匷ã«è²»ããããšããããŒã¿ããããŸãã8ææ«ã«ãç§ãJavaã§äœããããŠããããšãæããã«ãªããŸããããã®æãã§ã«ã¬ãã«20ã«ãªã£ãŠããŸãããç§ã¯äž¡èŠªã«ãæåã®ä»äºã«å°±ãåã«åŠæ¥ãçµãããŸã§ã®ãéãæŽå©ããŠãããããã«é Œã¿ãŸããã圌ãã¯ç§ãã¡ããµããŒãããŠãããŠããšãŠãæè¬ããŠããŸãã1æ¥çŽ3æéã®ã¢ã¯ãã£ãã©ãŒãã³ã°ã¯2021幎3æäžæ¬ãŸã§ç¶ãããä»äºãæ¢ãè©Šã¿ãããã€ããããŸããã2020幎10æãããžã¥ãã¢æ±äººãžã®å¿åãéå§ããŸãããç§ãåããŠé¢æ¥ã«åŒã°ããã®ã¯ã2021 幎 2 æ 12 æ¥ã§ããããããŠãæåã®é¢æ¥ã«ã¯ã2 åç®ã3 åç®ããããŸã...5 åç®ã®é¢æ¥ã§ãç§ã¯æ¡çšãããŸãããç§ã®ååºå€æ¥ã¯3æ23æ¥ã§ããä»æ¥ã¯7æ4æ¥ãè©Šçšæéãçµäºããã®ã§ãã®noteãæžããŠããã®ã¯ãä»ã®æåäºäŸãå
¥åŠããæåã®å°±è·ãŸã§ã©ã®ãããªéãæ©ãã¹ãããæããŠãããŠããããã§ããä»åºŠã¯ç§ããããäŒããçªã§ãã ç§ã®å
çãã¡ ç§ã«ç¥èãäžããŠãããçŽ æŽãããå
çãã¡ã®ååãæããã®ãç§ã®çŸ©åã ãšèããŠããŸãããç§ã¯åœŒããå人çã«ã¯ç¥ããŸããã ã¶ãŠã«ã»ãã¬ã°ãããçŽ æŽãããå
çã§ããã¬ãã« 20 以éã« Javarush ãå®äºãã圌ã®ã³ãŒã¹ãJAVA - Get a Black Belt!ããèŠèŽããŸããã¯ããã«ç°¡åã§ããéåžžã«å
å®ããã³ãŒã¹ã§ããç°¡åãªèšèã§ãæ倧éã®æ©èœãç°¡åãªäŸãçŠããã«èª¬æããŸãã圌ã®ãåçŽè
ã®ããã®æ¥ãã³ãŒã¹ãèŠãŠããã®æ¥ã®ãã¡ã«è³Œå
¥ãã1ãæã§å®äºããŸãããåå¿è
ã® Java ããã°ã©ããŒãããã 2 ã€ã®ã³ãŒã¹ãã¹ãããããã®ã¯å€§ããªééãã§ããOracleã«é¢ããè¬åº§ã®äžéšãèŠèŽããŸããã ãã€ã«ã»ã¢ãªã·ã§ããåå¿è
åãã® 52 ã® YouTube ãããªã¯ãJava ã®åºæ¬æŠå¿µãç解ããã®ã«åœ¹ç«ã¡ãŸããç§ã¯ã³ãŒã¹å
šäœãèŠèŽãã次ã«é«åºŠãªã¢ã«ãŽãªãºã ãšããŒã¿æ§é ãèŠèŽããŸãããã¬ãã« 10 ãŸã§ã®åå¿è
éçºè
ã¯ãNail ã«ééããããšã«ãªããŸãããã€ã«ã¯ãç°¡åãªããšãç°¡åãªèšèã§èª¬æããã®ãäžçªåŸæã§ããããéããä»äºã«æè¬ããŸããæ¥ã³ãŒã¹ãå
å®ããŠãããŸãã®ã§ããã²ãè¶ããã ããããããŠãããã git ã«é¢ããå¯äžã®ã³ãŒã¹ã Nail ã®äœåã§ãã ã€ã¯ã³ã»ãŽããŽã¡ãã20åã®ãããªææ¥ã§ã¯ã«ããŒã§ããªãããŒãã«åºäŒã£ãç¬éã«ãç§ã¯ã€ã¯ã³ã®è¬çŸ©ãç¥ããŸãããæ°ãæéãç§ã¯åœŒã®è¬çŸ©ãæ¯æ¥90åéèŠèŽããŸãããç£æ¥çšããã°ã©ãã³ã°ã«ã€ããŠãã㪠ã¬ãã¹ã³ã§ããã»ã©è©³çŽ°ã«è©³ããæããŠããã人ã¯ããŸãããç§ã¯ãGolovach æ°ã®æåž«ããã®é¢è±ã¯ CIS Java ã³ãã¥ããã£ã«ãšã£ãŠå€§ããªæ倱ã§ãããšå¿ããä¿¡ããŠããŸããã¯ãŒãã£ãæ»ã£ãŠããŠãã ããã Evgeniy Tikhonov ç§ã¯å匷ã®åãã«ãZhenya ã® Java ã«é¢ãã itvdn è¬çŸ©ã³ãŒã¹ãèŠèŽããŸãããåŸæã¯ããŠããŸããããç ããªããªãããã«ç®ã«ããããçªã£èŸŒãã ãšããããããŸãã Sergey Nemchinsky ãã®ç·ã¯ãåå¿è
ã®éçºè
ãæãã€ããããããªã YouTube äžã®ãã¹ãŠã®è³ªåã«çããŸããã圌ã®ãããªãã¹ããªãŒã ã¯ãçå£ã«ä»äºãæ¢ãå§ãããšãã«æ¬åœã«åœ¹ã«ç«ã¡ãŸãã ã€ã³ã¿ãã¥ãŒã®ãã¿ãŒã³ãé²é³ã«é¢ããæ
å ±ãæ¢ãå§ãããšã Evgeniy Suleymanov Zhenya ãçŸããŸããAlexander Petrov ãã®äººã¯ Java ã«ã€ããŠæãå€ãã®ã¬ãã¹ã³ãæã£ãŠãããçŽ 400 åãããŸããæã
ããã·ã¢ã® YouTube ã§åœŒä»¥å€ã®èª°ãåãäžããŠããªããããã¯ã«ééããããšããããŸãã ããã³ã»ã¬ãã£ã ãšã€ãªã¢ã³ãã¡ããå Žåã«ãã£ãŠã¯ãåé¡ã«ãã£ãŠã¯ããã·ã¢ã®ã€ã³ã¿ãŒãããäžã§äœãèŠã€ãããªãã£ãããè³æã®å質ãäœãã£ããããããšããããŸããNaveen ã¯ç°¡åãªè±èªã話ãã®ã§ãéåžžã¯ãã¹ãŠã«ã¢ã¯ã»ã¹ã§ããŸããã¹ããªãŒã API ãšããŠã¯ æªããªããã¬ã€ãªã¹ãã§ããç§ã¯æ¬ãââå
šéš èªãã ããšããããŸãããã·ã«ããå²åŠãJavaãåŠã¶ãèªãã§ã¿ãŸããã Javarush javarush ã䜿ããã«ãJava ã§ããã°ã©ãã³ã°ããŒãããåŠã¶æ¹æ³ã¯æ³åã§ããŸãããæ¬åœã§ãããç§ãä¹ãè¶ããªããã°ãªããªãã£ã978ã®èª²é¡ã¯ã©ãã«ãããŸãããããã°ã©ãã³ã°ã®ç·Žç¿ãããªããã°ããã°ã©ããŒã«ãªãããšã¯ã§ããŸãããã¯ãããã¬ãŒã ã¯ãŒã¯ãš SQL ã¯å¥ã
ã«åŠã¶å¿
èŠããããŸããã¯ããç§ãæ°ããéã«ç«ã€éçŸã®ããã«èŠãŠããã¿ã¹ã¯ãããã€ãããã§ããããã¯ããç§ãã³ã¡ã³ãã§ãç§ãã¡ã¯ãããªããšãçµéšããŠããªãããšæ³£ãèšãèšããŸãããããã§ããjavarush ã¯å¿
é ã§ãã ã³ãŒããŠã©ãŒãº ããæ¥ãJava éçºè
ã®å人ãç§ã«åé¡ãéã£ãŠããŸãããéæšæºçãªãµã€ã¯ã«ãäœæããŸãããããŸããããäžåšçšã§ããããããŠåœŒã¯ç§ã«ã¿ã¹ã¯ãäžããŸãããããšãã°ããµã€ãºã 3 à 3 æ¡ã® 2 次å
é
åã®ã¹ãã€ã©ã«å
å¡«ã§ã: 123,894,765 ã€ãŸãã4x4 ãŸã㯠5x5 ã®ä»»æã®æ°å€ãå
¥åãšããŠååŸããŸããã¡ãœããã¯é
åãåããå¿
èŠããããŸããäžè¬çã«ãç§ã¯ãããç解ããã®ã¯17æ¥åŸã§ãããããããç§ã¯æ¯æ¥ãã®äœæ¥ã«åãçµãã§ããããã§ã¯ãããŸããããããŠãcodewars ã«éããæ¯æ¥æå㯠8 çŽã次㫠7 çŽã次㫠6 çŽã解ããŸãããåèšã§çŽ 150 åã®åé¡ã解ããŸãããcodewar ã§ãã¢ã«ãŽãªãºã ã®æžãæ¹ãåå¥ã«åŠã¶å¿
èŠãããããšãããããŸãããããã¯äŸ¿å©ã§ãã ããã ãããžã§ã¯ã ç°¡åã«èšããšãAWS äžã® MySQL ã䜿çšãã Spring ã® CRUD ã§ãããAmazon ã¯ãåŠç¿ã®ããã« 1 幎éç¡æã®ãµãŒããŒãæäŸããŠããŸããä»ã§ã¯ããã¹ãŠã®åå¿è
éçºè
ã¯ã³ã³ãããŒã©ãŒã䜿çšã㊠CRUD ãæžãã¹ãã ãšæããŸããgetãpostãputãdelete ã¡ãœãããå¿
ãèšè¿°ããŠãã ããã ä»äºãèŠã€ããã®ã¯ é·ã話ã§ããäœã¶æãã®éãç§ã¯æåŠã ããåããŸãããããããç§ã®åšãã®äººã¯çããé¢æ¥ã«é»è©±ããªãã£ãããããã¯æªãå±¥æŽæžã ããšèšãç¶ããŸãããã¯ããçµéšã®ãªãå±¥æŽæžã¯è¯ãå Žåãããã°æªãå ŽåããããŸããå±¥æŽæžã®æžãæ¹ã«ã€ããŠã¯ãYouTube 㧠Hunters ãŸã㯠Nemchinsky ã«ããæšå¥šäºé
ãå¿
ãã芧ãã ãããç§èªèº«ã代衚ããŠããã®æã«å匷ããããšãã¹ãŠãå±¥æŽæžã«æžãå ãããšã ãèšã£ãŠãããŸããç§ã¯æéãè²»ããããã¯ãããžãŒã®ææ°ãªã¹ããæçš¿ãã人äºãç§ãé©ä»»ãã©ãããããã«å€æã§ããããã«ããŸããããã°ããããŠãå±¥æŽæžã«1幎éç¬åŠã§å匷ããŠããããšãæããã«ãªã£ããšãããã©ãŒã ãžã®èšå
¥ãæè¡çãªã¿ã¹ã¯ã®å®è¡ãæ±ããããå Žåãè¯å®çãªåå¿ããããŸããããããŸã§ã¯æåŠãããããŸããã§ããã2æ12æ¥ã®èªçæ¥ã«zoomã§åé¢æ¥ãã¡ãã£ãšæãã£ãã§ããStream API ã«ã€ããŠã¯ãŸã£ããç¥ããŸããã§ãããç§ã¯ããæãã§ãããäžè¬ã«ã圌ã®è³ªåãžã®çãã¯æªãã£ãã圌ãã¯ç§ãé£ããŠè¡ããŸããã§ãããããããæåã®é¢æ¥ã®åŸã1é±éåŸã«2åç®ã®é¢æ¥ãè¡ãããŸãããæ¯é±ãããäŒæ¥ãç§ãã¡ãäŒè©±ã«æåŸ
ããŠãããŸããããã ããããæž¡ãæ¹æ³ãåŠã°ãªããã°ãªããŸããã§ãããç§ã¯æ··ä¹±ãã質åããã¹ãŠæžãçããŠå匷ãå§ããŸãããèªåã®ç解ããç¯å²ã§èªåã®èšèã§æžããŸããããžã¥ãã¢ã®æ±äººã ãã§ãªãã1幎ãã3幎ãŸã§ã®çµéšãå¿
èŠãªããããæ¡ä»¶ã«å¯Ÿå¿ããããã«ãªããŸããã3æ19æ¥ã«ã¯5件ã®é¢æ¥ãäºå®ãããŠãããæ£çŽã«èšããšã4å倱æããåŸã¯ãŸããŸãã ãšæããŸãããã§ããæ¡çšããããŸã§ã¯ç¶ããã€ããã§ããããªãã£ã¹ã«æ¥ãŸãããç§ã¯äººäºéšã«äŒã£ãŠã圌ãããŒã ãªãŒããŒã«çŽ¹ä»ããŸãããç§ãã¡ã¯åº§ããŸããããããã質çãå§ãŸããšæããŸããããããããã©ããããããéããŠãã¿ã¹ã¯: ãè¿ã get ã³ã³ãããŒã©ãŒãäœæããŸã...ããšã€ã³ã¿ãã¥ã¢ãŒã¯èšããŸãããç§ã¯ã³ã³ãããŒã©ãŒãäœæããæ°åã§çµã¿ç«ãŠãŸããããããŠGoogleã䜿ããŸããããã£ããããæ°åãç¥ã£ãŠããŸãã? ããã§ãã³ã³ãããŒã©ãŒã¯æ°åã®ã€ã³ããã¯ã¹ãååŸããæ£ããæ°å€ãè¿ãããã«ããŸããããã ããããã§ã¯æ€çŽ¢ã䜿çšã§ããªããªããŸããã¢ãªã·ã§ããééããŠããã®ã§ãããã« 15 åããããŸãããã¯ãããã®åé¡ã¯ç§èªèº«ã§è§£æ±ºããŸããã3çªç®ã®ã¿ã¹ã¯ã¯ããã«é£ãããæŠéãã§ãã詳现ã¯çããŸãããæ¥ä»å€æŽãå·§åŠã«èšç®ããå¿
èŠããããŸãããããã§ç§ã¯é·ãéè¡ãè©°ãŸããŸããããåé¡ãå解ããæ¹æ³ã瀺ããããã解決ããæ¹æ³ã説æããã³ãŒãã®çŽååãå»æ£ããŸãããé¢æ¥å®ã¯ãä»äºãããããããã®ã§ããããã€åž°ããã®ã§ããïŒæææ¥ã§ããïŒããšå°ããŸãããäžå®ãæããŸããããŸãã§äœãã®éº»è¬ãçãããããã§ãããç§ã¯ããªãã¡ãŒãå¿
èŠã§ãããšèšããŸããããããã§ã¯ã人äºéšãæææ¥ã«ãªãã¡ãŒãéããç«ææ¥ã«åºãŠããŸããã ä»äº 3æ23æ¥ç«ææ¥ãåºå€ããŸãããã©ããããããã¢ãã¿ãŒ 2 å°ãubuntuãã¢ã¯ã»ã¹æš©ãä»äžãããŸãããååãå©ããŠãããŠããã¹ãŠã®è³ªåã«çããŠãããŸãããç§ã¯ãã4ã¶æåããŠããŸãããã¡ãããã³ãŒã¹ãéããŠç£æ¥çšããã°ã©ãã³ã°ã®çµéšãç©ãããšã¯ã§ããŸãããå
¥ç€Ÿåæ¥ããããã«ã«ãªãããšã¯ã§ããŸãããåããŠã®ä»äºã«å°±ãã人ãžã®ã¢ããã€ã¹: æ倧éã®çµæãçã¿åºãããã«åªããå£æ°ã¯å°ãªãããŸããããããå€ãã®ã¿ã¹ã¯ãããéãå®äºããŸãã圌ãã¯ééããªããããèŠãŠæè¬ããããªããè¿œãæããããªããªãã§ãããããæ°è»œã«ã質åãã ããã40åãæ¢ãŸã£ãŠãã®ãïŒååã«ã©ãããã°åé²ã§ããããå°ããŠãã ãããããã§ããªãã¯ããŒã ã«ãªããŸããããã®åŸã圌ãã¯ããªãã«é£çµ¡ããŸããæåã®ä»äºã«å°±ããŸã§ã« 15 ãæããããçŽ 750 æéã®ãã¬ãŒãã³ã°ãåããŸãããjavarush ã³ãã¥ããã£ãšããŒã ã«å€å€§ãªæè¬ãç³ãäžããŸããè¬çŸ©ãåé¡ã®äžã«ããã³ã¡ã³ããå¿
ãèªãã§ãã ããã
GO TO FULL VERSION