List<String>转换String[]或String

List<String> strlist = new ArrayList<String>();
strlist.add("sdfs1");
strlist.add("sdfs2");

转换为String[]

String[] resultList = new String[] {};

resultList = strlist.toArray(new String[0]);
// or
resultList = strlist.toArray(new String[resultList.size()]);

转换为String

String result = "";

result = Arrays.toString(resultList)