package com.test;

 import java.io.BufferedReader;

 import java.io.BufferedWriter;

 import java.io.File;

 import java.io.FileNotFoundException;

 import java.io.FileReader;

 import java.io.FileWriter;

 import java.io.IOException;

 import java.util.ArrayList;

 import java.util.List;

 /**

  * 将两个文档合并为一个文档，需要注意要读取的文件的编码格式与java文件的编码格式相同

  * @author Administrator

  *

  */

 public class Demo3 {

     public static void main(String[] args) {

         // TODO Auto-generated method stub

         Readwrite111 readwrite111 = new Readwrite111();

         readwrite111.copyDate();

     }

 }

 class Readwrite111 {

     public static void copyDate() {

         BufferedReader bufferedReader = null;

         BufferedReader bufferedReader2 = null;

         BufferedWriter bufferedWriter = null;

         try {

             //将要进行合并的文档

             File file = new File("D://userMsg//userinfo.txt");

             File file2 = new File("D://userMsg//userinfo11.txt");

             //保存读取到的文档内容

             List<String> list = new ArrayList<String>();

             String str = null;

             //开始进行第一个文档的读取

             FileReader fileReader = new FileReader(file);

             bufferedReader = new BufferedReader(fileReader);

             while((str = bufferedReader.readLine())!= null){

                 list.add(str);

             }

             //开始进行第二个文档的读取

             FileReader fileReader2 = new FileReader(file2);

             bufferedReader2 = new BufferedReader(fileReader2);

             while((str = bufferedReader2.readLine())!=null){

                 list.add(str);

             }

             //将要进行合并的文档，并此将结果写入到此文档中

             File file3 = new File("D://userMsg//userinfo22.txt");

             FileWriter fileWriter = new FileWriter(file3);

             bufferedWriter = new BufferedWriter(fileWriter);

             for(String s : list){

                 bufferedWriter.write(s);

                 //写入数据是进行换行

                 bufferedWriter.write("\r\n");

                 System.out.println(s);

             }

             bufferedWriter.flush();

         } catch (FileNotFoundException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (IOException e){

             e.printStackTrace();

         }finally{

             try {

                 if(bufferedReader!=null){

                     bufferedReader.close();

                 }

                 if(bufferedReader2!=null){

                     bufferedReader2.close();

                 }

                 if(bufferedWriter!=null){

                     bufferedWriter.close();

                 }

             } catch (IOException e) {

                 // TODO Auto-generated catch block

                 e.printStackTrace();

             }

         }

     }

 }