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24 gen 2012 · Collections.addAll is what you want. Collections.addAll(myArrayList, '+', '-', '*', '^'); Another option is to pass the list into the constructor using Arrays.asList like this: List<Character> myArrayList = new ArrayList<Character>(Arrays.asList('+', '-', '*', '^'));
25 ott 2022 · addAll(Collection <? extends E> c): This method appends all the elements from the given collection to the end of the list. The order of insertion depends on the order in which the collection iterator returns them. addAll(int index, Collection <? extends E> c): we can use this method to insert elements from a collection at the given index.
6 ago 2017 · 0. add is used when you need to add single element into collection. addAll is used when you want to add all elements from source collection to your collection. In this particular case you're using ArrayList without specifying a generic argument, so ArrayList<Object> is assumed.
20 mag 2019 · Collections addAll () method in Java with Examples - GeeksforGeeks. Last Updated : 20 May, 2019. The addAll () method of java.util.Collections class is used to add all of the specified elements to the specified collection. Elements to be added may be specified individually or as an array.
