public class Test {

    public static void main(String[] args) {

        method1("F:\\test.txt" , "测试测试将字符写入文件默默");

    }

    /**

     * 追加文件：使用FileOutputStream，在构造FileOutputStream时，把第二个参数设为true

     *

     * @param fileName

     * @param content

     */

    public   static   void  method1(String file, String conent) {

        BufferedWriter out = null ;

        try  {

            out = new  BufferedWriter( new  OutputStreamWriter(

                    new  FileOutputStream(file,  true )));

            out.write(conent);

        } catch  (Exception e) {

            e.printStackTrace();

        } finally  {

            try  {

                out.close();

            } catch  (IOException e) {

                e.printStackTrace();

            }

        }

    }

}