Java中使用Arrays.asList初始化ArrayList

package xiaoling;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
public class ListTest{
        public static void main(String[] args){
                List<List<Integer>> list = new ArrayList<>();
                for (int num=0; num<10; ++num){
                        list.add(new ArrayList(Arrays.asList(num, num+1)));
                }
                System.out.println(list);
        }
}

 运行结果为：[[0, 1], [1, 2], [2, 3], [3, 4], [4, 5], [5, 6], [6, 7], [7, 8], [8, 9], [9, 10]]

数组测试：

package xiaoling;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.List;
public class ListTest{
    public static void main(String[] args){
        List<List<Integer>> list = new ArrayList<>();
        for (int num=0; num<5; ++num){
            list.add(new ArrayList(Arrays.asList(num, num+1)));
        }
        System.out.println(list);

        int[] nums = new int[]{11, 12, 13, 14, 15};
        list.add(new ArrayList(Arrays.asList(nums)));
        System.out.println(list);

        Integer[] nums1 = new Integer[]{11, 12, 13, 14, 15};
        list.add(new ArrayList(Arrays.asList(nums1)));
        System.out.println(list);
    }
}

[[0, 1], [1, 2], [2, 3], [3, 4], [4, 5]]
[[0, 1], [1, 2], [2, 3], [3, 4], [4, 5], [[I@4defb0be]]
[[0, 1], [1, 2], [2, 3], [3, 4], [4, 5], [[I@4defb0be], [11, 12, 13, 14, 15]]