Answers for "array to arraylist java"

java array to list

Integer[] spam = new Integer[] { 1, 2, 3 };
List<Integer> list = Arrays.asList(spam);

java list to array

String[] arr = list.toArray(new String[list.size()]);

Create ArrayList from array java

new ArrayList<>(Arrays.asList(array));

Create ArrayList from array java

new ArrayList<>(Arrays.asList(array))

java array to arraylist

List<Element> list = Arrays.asList(array);

array to arraylist java

ArrayList<Integer> list = new ArrayList<>(OtherList);
//it will copy all elements from OtherList to this one
//time complexity - O(n)