数组转换成List
可以用Collections.addAll(list,a)或者list = Arrays.asList(a)方法将一个数组转换成List
public class Test {
public static void main(String[] args) {
// int[] a = {1,2,3}; //基本类型的数组不行，会报错
Integer[] a = new Integer[]{1,2,3};
List<Integer> list = new ArrayList<>();
// Collections.addAll(list,a);
list = Arrays.asList(a);
System.out.println(list);
}
} 输出
[1, 2, 3]
