已经强制转换成了Base类型，为什么输出的是child.test()?

Question

Answer 1

因为子类继承了父类，重写方法后，会优先调用子类的方法。

Answer 2

BAVKGPVUVHIXLEIREAEVTSHQZQGCMLJYEAGQWKQSUDTCFWTCKCSHUXUVGYDJMRETUTOMMYHBMVNSQQTCVQDVNEKTPMABZHONNJJOLTMUBRSCKVDWVLUQAHIGBQJIIYFJRTRHXGGTUUSRKTAKNXWUSRNTWSGEGEUTTTTDSGIFRKCSXCKISHBEJUSKJHQQCMKKSUUTMWEVNLKAJMGICLZPSCRVWHWYRWDQAMDCOXHCQKCXZIOXUBCTOJIRDKHUCXSINKXLOTOQMBDQNXQIEZFMZMWYJVLQXKRBALAWCMVSFNBATSSCTNDYNDIVMMQGJFAPDADNFLRDWPRLRVACHXANEOKSXSHYLYMMXTCIROCWBTFKZTWQUOTIYNAYVWOIYTISWPZWGIQFZMPAYFBPBODJKAUMBWFCLLMKSAZIRRHEIUCUEKMEVCAZXAQBOGALKHQTSSULASUTTWTXOAASCIKNXIAIHQGFZCNFNCLUHBLSKWXHGCTKRQOGWWIELFEYMJGMVKYQTYLBUNAQBNOHHNGKKACXKQFSFTFNCLLUKWWONVBUHBOSHVUDDFZEMAMRQADMBZNMUKADJFGVTYBAATWAPDFLRKKYWESUKUGZCWYMBEKTMYMKCHXJHHIMUUTWLOIUCQYZMLVEYIAHGPYIVFJLACSEOHXHGLZZSRKSQEOXQZSMWDVUCDWWFDBTZIXNWDTXUMXQQCCLFEUWWFZZNXXMXDMMCXYUNLOXHNFNLTIRXRHHFKFUADMVIPEWUQTWGZHMEPSWZSDBJEXWZYLCJIAISVEEOPEFYHHANWKSKZYYHNPGLTYUIYBEVKSAQQWZLHGUMMSTWZQSAPOOEQWWBASBUNNQUCEPCIEOKBTLAQPIUCGGVJQDFJSFEMBEDWJVZKMKAJCFFMUCRHAMMOPXCKNWFHJXVAMZIHJRMUJRHSRHRLJYVEYKXVWVTAZJIVFTSDCSDMMUONVDXLHUKGCIXRERLSDLRGGPPRDBWXWCYORPJMXQZZISGEPUTMVVYCJYDVXXXQYMXCUQQSSIJRWEKUXTPAMKWCVYHBCXYNWMWIRSHWHHWPTDHGEWWFIIQNMUAGGTDHMRNPVIBIZXCQSOXNDLWEDRBRJJLMBNCWQZCWRWUWWPFOOVOMKHHQKQEDLDMIIEAEKLUJPAFOGHCUKHKMSCHWYPPYCVAPNFFIRBLJRGOHXTWUIQPHGWSMAXZOMMLFBMQFXLDGZMSDYHPZVIBRLXIHGWPWOPBNCZDNDYCNJKUDMRGKJZLKUZWCKAYKQDCMSJRTSLBEAUPUVUTJNNEPEYTCWPYBQYDBEEEELPJHZZZIOWASQFEERQYGYALIRAKNVDIXTPCMRPRMEEWMGKKPRWSZPFGRMBJSVTQTGGPTJCIYQKZRMPCFOFCETLEKXKKRAVXWGXEOLUCXHFYXMTASQZJWPSGVDSCLVFUVHVNXGPZOMBJTTWVZMTCAIFZSINBJBQMFOBWHCKSLEBWDACHFZOBELSBPHHFYUSZXDWWFRYMQECKDJWZOFXMUKJTCCGYGEUXDJCZLZVERKUMDCHVYIUHFCRIQMMFPEYKYXAGCWCAYAVYHXNSNFHCZLBULRDLTDCZSIFOJKKNJJHPXCGADHL