import java.util.*; public class TestJcf{ public static void main(String []args){ List<Integer>list = new ArrayList<Integer>(50); Collections.addAll(list,1,2,3,4,5); Collections.sort(list); list.forEach(System.out::println); } } //可变参 /*public void addAll(List<Integer> list,Integer...data ){ for(Integer x:data){ list.add(x); } }*/