java中數組與集合間的轉換（不通過遍歷）

1.將數組轉換成List 

 String[] array = new String[] { "aa", "bb", "cc" };
List<String> list = Arrays.asList(array);
for (String string : list) {
System.out.println(string);
}

2.將List轉換成數組

 List<String> list2 = new ArrayList<String>();
list2.add("aa");
list2.add("bb");
list2.add("cc");
String[] resStrings = new String[list2.size()];
resStrings = (String[]) list2.toArray(resStrings);
for (String string : resStrings) {
System.out.println(string);
}