Is there a shortcut to add (in fact append ) an array of int to an ArrayList? for the following example
是否有一个快捷方式可以将一个int数组添加（实际上是附加）到ArrayList中？对于以下示例
ArrayList<Integer> list=new ArrayList<Integer>();
int[] ints={2,4,5,67,8};
Or do I have to add the elements of ints one by one to list?
或者我必须逐个添加整数元素列表？
1 个解决方案
#1
5
Using Arrays.asList(ints) as suggested by others won't work (it'll give a list of int[] rather than a list of Integer).
使用其他人建议的Arrays.asList（ints）将不起作用（它将给出int []列表而不是Integer列表）。
The only way I can think of is to add the elements one by one:
我能想到的唯一方法是逐个添加元素：
for (int val : ints) {
list.add(val);
}
If you can turn your int[] into Integer[], then you can use addAll():
如果你可以将int []转换为Integer []，那么你可以使用addAll（）：
list.addAll(Arrays.asList(ints));
#1
5
Using Arrays.asList(ints) as suggested by others won't work (it'll give a list of int[] rather than a list of Integer).
使用其他人建议的Arrays.asList（ints）将不起作用（它将给出int []列表而不是Integer列表）。
The only way I can think of is to add the elements one by one:
我能想到的唯一方法是逐个添加元素：
for (int val : ints) {
list.add(val);
}
If you can turn your int[] into Integer[], then you can use addAll():
如果你可以将int []转换为Integer []，那么你可以使用addAll（）：
list.addAll(Arrays.asList(ints));