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24. Jan. 2012 · Collections.addAll is a better way to go, as it simply iterates through given items adding all of them to the list, while with Arrays.asList you would create a temporary List object to achieve the same result. –
2. Jan. 2019 · List addAll () Method in Java with Examples. This method appends all of the elements in the specified collection to the end of this list, in the order that they are returned by the specified collection’s iterator. Syntax: Parameters: This function has a single parameter, i.e, Collection c, whose elements are to be appended to the list.
Class ArrayList<E>. Resizable-array implementation of the List interface. Implements all optional list operations, and permits all elements, including null. In addition to implementing the List interface, this class provides methods to manipulate the size of the array that is used internally to store the list.
24. Juli 2023 · execメソッドで、addAllメソッドを使っています。 最初にfruits1変数・fruits2変数に対して、3つの文字列でリストを作成しています。 次の処理で、fruits1リストからaddAllメソッドを呼び出しています。 引数として 渡しているのは、追加したいリスト になります。
addAll() 方法将给定集合中的所有元素添加到 arraylist 中。 addAll() 方法的语法为： arraylist.addAll(int index, Collection c) 注 ：arraylist 是 ArrayList 类的一个对象。 参数说明： index（可选参数）- 表示集合元素插入处的索引值; c - 要插入的集合元素
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