利用java io逐行操作文件并替换内容

Question

A文件：
as1
dfg1
hjkl1
逐行读取A文件的内容，将1替换成 一 后将替换后的内容写到B文件中

Answer 1

BufferedReader readBuffer = new BufferedReader(new FileReader( new File("D:/aaaa.txt")));
BufferedWriter write = new BufferedWriter(new FileWriter(new File("D:/bbbb.txt")));
String line = readBuffer.readLine();
while(line!=null){
write.write(line.replaceAll("1", "替换后")+"\r\n");
line = readBuffer.readLine();
}
write.flush();

    不谢；