String数组转List,List转String数组---小笔记

string类型转换List<string>：

string str = "a,b,c";
var liststr = str.Split(',');
List<sting> mylist=new List<string>();
for(int i = 0, i <mylist.length,i++)
{
myList.add(item);
}


list转String数组：

package com.util;

import java.util.ArrayList;

import java.util.List;

public class MyTest {

/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
List<String> mylist =new  ArrayList<String>();
mylist.add("aa");
mylist.add("bb");
mylist.add("cc");
System.out.println(MyTest.toString(mylist));
}
public static String  toString(List<String> lists){
if (lists == null) {
return  null;
}
List<String> arr = lists;
int length = lists.size();
StringBuffer buf = new StringBuffer("");
if(length > 0){
   buf.append(arr.get(0));
}
for(int i = 1 ; i < length ; i++){
  buf.append(',');
  buf.append(arr.get(i));
}

return  buf.toString();

}

}