Java中List轉換為數組,數組轉List List轉換為Array可以這樣處理: ArrayList<String> list=new ArrayList<String>(); String[] strings = new String[list.size()]; list.toArray(strings); 反過來,如果要將數組轉成List怎么辦呢?如下: String[] s = {"a","b","c"}; List list = java.util.Arrays.asList(s);