求帮助如何样用printStream类在e.txt中写上一首唐诗呢且是从键盘输入的

import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import java.io.PrintStream;import java.io.UnsupportedEncodingException;import java.util.Scanner;public class Ansewer29{    public static void main(String[] args)    {        // TODO Auto-generated method stub        File file = new File("d:" + File.separator + "e.txt");        FileOutputStream fout = null;        try        {            fout = new FileOutputStream(file);        }        catch (FileNotFoundException e)        {            e.printStackTrace();        }        PrintStream ps = null;        try        {            ps = new PrintStream(fout, true, "GBK");        }        catch (UnsupportedEncodingException e)        {            e.printStackTrace();        }        Scanner sc = new Scanner(System.in);        String str = null;        System.out.println("请输入古诗,按'q'退出!");        while (sc.hasNextLine())        {            str = sc.nextLine();            if (str.equals("q"))            {                System.out.println("退出,Bye");                break;            }            ps.println(str);        }        try        {            fout.close();        }        catch (IOException e)        {            e.printStackTrace();        }        ps.close();    }}