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                [TOC] # 類加載機制與反射 ## 反射機制的概念 反射是 Java 中一個非常強大的工具,能夠方便我們創建更加靈活的代碼,這些代碼可以在運行時進行裝載。 類中有什么信息,利用反射機制就能獲得什么信息,不過有前提,必須知道類的全名。 > 但是使用反射對系統的開銷是比較大的。
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