Reads files row by row and writes files row by row

I/O Stream-related classes in Java are "too rich", and people with difficult choices cannot start. Of course, this cainiao does not know much about Java I/O. I am used to using the nputstrem and outsteam subclasses to process binary streams. I use reader, child classes related to writer are used to process streams such as text files. The buffer mechanism is used to improve efficiency. I feel that the buffer mechanism is mostly a dirty stream. I don't know what buffer mechanism the binary system has. I can't solve it by Google. I feel that the posts in the blog garden are generally higher than those in csdn. In addition, I can see that all the articles in the blog Park are of high quality. In contrast, what I wrote by cainiao will remind me of the sentence: Too young too naive! OK. The title is the content of this note. The Code is as follows:

 1 package io.newline; 2  3 import java.io.BufferedReader; 4 import java.io.BufferedWriter; 5 import java.io.FileNotFoundException; 6 import java.io.FileReader; 7 import java.io.FileWriter; 8 import java.io.IOException; 9 import java.io.PrintWriter;10 11 public class CopyLine {12     public static void main(String[] args) {13         try {14             BufferedReader br = new BufferedReader(new FileReader("F:/a/s.txt"));15 16             PrintWriter out = new PrintWriter(new BufferedWriter(17                     new FileWriter("F:/a/t.txt", true)));18 19             String line = null;20 21             while ((line = br.readLine()) != null) {22                 System.out.println(line);23                 out.println(line);        //向t.txt写入一行24             }25             if (br != null) {26                 br.close();27             }28             if (out != null) {29                 out.close();30             }31 32         } catch (FileNotFoundException e) {33             e.printStackTrace();34         } catch (IOException e) {35             e.printStackTrace();36         }37 38     }39 40 }

 

Reads files row by row and writes files row by row