public class Writer {

    public static void writer(String encryptText,String fileNameDec){
        FileWriter writer = null;
        try {
            //true表示不覆盖原来的内容,而是加到文件的后面,如果要覆盖,这个参数也可以省略
            writer = new FileWriter(fileNameDec,true);
            writer.write(encryptText);
            writer.flush();
            writer.close();
        } catch (IOException e) {
            System.out.println("写入文件发生了异常");
            e.printStackTrace();
        }
    }

    public static void main(String[] args) {
        writer("zhong","d://jiami.txt");
    }

}