使用BufferedReader與BufferedWriter練習檔案存取

http://11967046.blogspot.tw/2011/06/bufferedreaderbufferedwriter.html

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.FileNotFoundException;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

 

 

public class s11967046 {

 

 public static void main(String[] args) {

  FileReader reader = null;

  FileWriter writer = null;

  BufferedReader br = null;

  BufferedWriter bw = null;

  String data;

   

  try {

   //建立物件，並且裝上Buffer

   reader = new FileReader("A.txt");

   writer = new FileWriter("B.txt",true);

   br = new BufferedReader(reader);

   bw = new BufferedWriter(writer);

    

   //使用while迴圈逐行讀取資料

   //再利用write將data儲存資料

   while((data = br.readLine()) != null){

    bw.write(data);

    //每次會讀取一行，所以幫它換行

    bw.newLine();

   }

 

  } catch(FileNotFoundException e){

   System.out.print("檔案找不到");

    

  } catch (IOException e) {

    

  } finally{

   try {

    //記得兩個都要關閉

    br.close();

    bw.close();

   } catch (IOException e) {

 

   }

    

  }

 }

 

}