Java写文本文件时如何决定采用什么字符集来存储

Question

像下面那样写存成的文件a.txt也不是预想的utf-8字符集        PrintWriter out = new PrintWriter(new FileWriter("c:/a.txt"));
        out.println(new String("中文".getBytes("utf-8"),"utf-8"));
        out.flush();
        out.close();不管指定什么，存成的a.txt仍然是默认的iso8859-1字符集如果我要指成它应采用什么字符集来保存该如何做呢

Answer 1

Properties pps=System.getProperties();
pps.put("file.encoding","utf-8");不知道这样是否可行

Answer 2

PrintWriter out = new PrintWriter(new OutputStreamWriter(new FileOutputStream("c:/a.txt"),"utf-8"));
        out.println("中文");