package werewolf; import org.junit.Test; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.List; /** * @author wangtonghe * @date 2017/8/29 23:26 */ public class ListTest { @Test public void test(){ List<String> src = new ArrayList<>(); src.add("asd"); List<String> dest = new ArrayList<>(Arrays.asList(new String[src.size()])); Collections.copy(dest,src); System.out.println(dest); } @Test public void test2(){ List<Integer> list = new ArrayList<>(); list.addAll(Arrays.asList(1,3,5,6,7)); System.out.println(list.subList(1,3)); } }