Object:所有類的超類 · book · 看云

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## 概述 java中的Object是所有類的始祖.java中的所有類都是由它派生而來. ## equals 對于基本類型 "==" 比較的是值是否相等.對于引用類型"=="比較的是內存地址是否相等.對于字符串類型equals()比較的是值是否相等(String類對equals進行了重寫). Object類的equals() 比較的是內存地址.

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