JAVA Iterator 转成 List 的操作

#Apache Commons Collections:
import org.apache.commons.collections.IteratorUtils;
Iterator<Element> myIterator = //some iterator
List<Element> myList=IteratorUtils.toList(myIterator);  

public static <T> List<T> copyIterator(Iterator<T> iter) {
  List<T> copy = new ArrayList<T>();
  while (iter.hasNext())
    copy.add(iter.next());
  return copy;
}

List<String> list = Arrays.asList("1", "2", "3");
Iterator<String> iter = list.iterator();
List<String> copy = copyIterator(iter);

#Guava
import com.google.common.collect.Lists;
Iterator<Element> myIterator = //some iterator
List<Element> myList = Lists.newArrayList(myIterator);

public void test(){
    String[] str = {"first","second","third"};
    ArrayList<String> arrayList = new ArrayList<String>(Arrays.asList(str));
  }

public void test(){
    int[] nums = {5,6,8,4,7,3};
    List<Integer> list = Arrays.stream(nums).boxed().collect(Collectors.toList());
  }

public void test(){
    List<String> list = new ArrayList<String>();
    list.add("first");
    list.add("second");
    String[] str1 = list.toArray(new String[list.size()]);
  }

public void test(){
    List<String> list = new ArrayList<String>();
    list.add("first");
    list.add("second");
    for(Iterator<String> i = list.iterator(); i.hasNext();){
      String str = i.next();
      System.out.println(str);
    }
  }