数组和集合相互转换

一.数组转换为集合

Arrays.asList(数组);

    String [] strArr = {"1","2","3","4"};
	List list = Arrays.asList(strArr);

二.集合转换为数组

list.toArray(new String[]{});

     List list = new ArrayList();
     list.add("1");
     list.add("2");
     list.add("3");
     String [] strArr =  list.toArray(new String[]{});