输出文件

class shuchuwenjian {

    public static boolean shuchu(ArrayList<String> ayyay, String wenjianname){
        try {
            BufferedWriter bw = new BufferedWriter(new OutputStreamWriter
                                (new FileOutputStream(new File(wenjianname)),"UTF-8"));
            for (String name : ayyay) {
                bw.write(name+"\n");
                bw.newLine();
            }
            bw.close();
        } catch (Exception e) {
            System.err.println("write errors :" + e);
        }
    File wenjian=new File(wenjianname);
        return wenjian.exists();


    }

}