java多態(tài)
摘要:
多態(tài):在測試類中轉(zhuǎn)換 如:main類 Student s1 = new Student(); Person s2 = new Student(); Object s3 = new Student(); ((student)s2).eat 強制轉(zhuǎn)化:高轉(zhuǎn)低,從person類型(父類)轉(zhuǎn)化成studen 閱讀全文
posted @ 2025-03-30 16:55 小不點不愛睡覺 閱讀(5) 評論(0) 推薦(0)
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