字符流与字节流相互转换

import java.io.*;
class TransDemo
{
    public static void main(String[] args)throws IOException
    {    //字节流转字符流
        InputStream in = System.in;
        InputStreamReader isr = new InputStreamReader(in);
        BufferedReader bufr = new BufferedReader(isr);
        
        //字符流转字节流
        OutputStream out = System.out;
        OutputStreamWriter osw = new OutputStreamWriter(out);
        BufferedWriter bufw = new BufferedWriter(osw);
        
        
        String line = null;
        while((line=bufr.readLine())!=null){
            if("over".equals(line))
                break;
            //System.out.println(line);
            bufw.write(line);
            bufw.newLine();
        }
        bufr.close();
    }
}