面试题锦集

public class ReaderFile{

 

public static void main(String[] args)

 

{

FileReader fr =new FileReader();

FileWirter fw =new FileWriter();

BufferedWriter bw =new BufferedWriter(fw);

BufferedReader br =new BufferedReader(fr);

String str=null;

       while((str=br.reader)!=null){

          System.out.println(str);

             bw.write(str);

 

            }

bw.close();

br.close();

 

}

 

}