Java用Arrays.asList初始化ArrayList实例方法

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);
    }
}

Map<String, List<CronTrigger>> tMap = new HashMap<String, List<CronTrigger>>();
tMap.put(name, Arrays.asList(new CronTrigger[] { trigger }));

Arrays.class:
 @SafeVarargs
  public static <T> List<T> asList(T... a) {
    return new ArrayList<>(a);
  }
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private static class ArrayList<E> extends AbstractList<E>
    implements RandomAccess, java.io.Serializable
  {
    private static final long serialVersionUID = -2764017481108945198L;
    private final E[] a;
    ArrayList(E[] array) {
      if (array==null)
        throw new NullPointerException();
      a = array;
    }
.....