Integer is wrapper class and int is primitive data type.Always prefer using Integer in ArrayList. Share. ... <看更多>

How To Create An ArrayList of Integers | ArrayList in Java Tutorial. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. ... <看更多>

public static int sumScores(ArrayList<Integer> scoreBoard) { int sum = 0; for (int x: scoreBoard) { sum += x; } return sum; } ... ... <看更多>

import java.util.ArrayList; import java.util.List; public class ListReturn6 { public static List getSubList(List<Integer> list) ... ... <看更多>

Write a method that returns the union of two array lists of integers using the following header: *. * public static ArrayList<Integer> ... ... <看更多>