一、基礎知識

在學習Java之前要先了解計算機基礎知識，然後再學習Java，同時也要熟知DOS常用命令、Java概述、JDK環境安裝配置、環境變數配置，當JDK和環境變數配置完畢後，你便可以編寫Java程式。

二、程式設計格式

此時你需要了解程式設計的具體流程，在開發過程中要文字“註釋”，也要掌握“關鍵詞”的使用時注意事項，對“識別符號、常量與變數、資料型別、運算子、流程控制語句、陣列、方法”要理解並能熟練使用。

三、物件導向

生活中隨處可見的事物便是物件，物件分為“靜態部門和動態部分”，想要真正瞭解Java物件導向，你要對“物件導向思想、類與物件、成員變數和區域性變數、匿名物件、封裝、this關鍵字、構造方法、繼承、多型、抽象類、介面、 內部類”能夠理解，在開發中能夠熟練使用。

四、常用類

在程式設計中，合理和充分利用類庫提供的類和介面，不僅可以完成字串處理、繪圖、網路應用、數學計算等多方面的工作，而且可以大大提高程式設計效率，使程式簡練、易懂。所以你要熟練掌握“Object類、Scanner類、String類、StringBuffer類、StringBuilder類、Arrays類、基本包裝類、正規表示式、Math類、Random類、System類、Date類、DateFormate類、Calendar類，及其常用方法”在開發中能夠運營好應用程式介面。

五、集合與IO

集合是存放資料的容器，在學習Java中要清楚知道“什麼是集合？陣列與集合有什麼區別，集合類的特點，掌握Collection介面、Iterator介面、List介面、ListIterator介面、ArrayList類、Vector類、LinkedList類、泛型、Set介面、HashSet類、Map介面、HashMap類、LinkedHashMap類等。”而IO是輸出的藉口，Java.io是Java的核心庫，你需要了解“異常、File類、IO流”，程式設計中也會涉及到“多執行緒、網路程式設計、反射”，所以你也要熟悉它們的應用。

六、J2EE

這一點在學習中必須知曉，在Java開發中Core;">模型。
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集合是存放資料的容器，在學習Java中要清楚知道“什

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