通过字节流读取文本文件并添加行号

import java.io.*;
public class LineNumberDemo_1 {
    public static void main(String[] args) {
        BufferedReader bufferedReader=null;
        BufferedWriter bufferedWriter=null;
        try{
            bufferedReader=new BufferedReader(new InputStreamReader(new FileInputStream("d:/javaStudy/javaworkspace/g.txt")));
            bufferedWriter=new BufferedWriter(new OutputStreamWriter(new FileOutputStream("d:/javaStudy/javaworkspace/gg.txt")));
            int i=1;
            String str="";
            while((str=bufferedReader.readLine())!=null){
                bufferedWriter.write(i+"、"+str);
                bufferedWriter.newLine();
                i++;
            }
            bufferedWriter.flush();
        }catch(Exception e){
            e.printStackTrace();
        }finally {
            try{
                if(bufferedWriter!=null){
                    bufferedWriter.close();
                }
                if(bufferedReader!=null){
                    bufferedReader.close();
                }
            }catch (Exception e){
                e.printStackTrace();
            }
        }
    }
}