java IO流操作古诗倒叙

package zhangge;

import java.io.BufferedReader;

import java.io.BufferedWriter;

import java.io.File;

import java.io.FileReader;

import java.io.FileWriter;

import java.io.IOException;

import java.util.ArrayList;

public class Io {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

File file;

FileReader fils=null;

BufferedReader br=null;

String str;

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

try

{

 

String path="d:\\A.txt";

    file=new File(path);  

fils = new FileReader(file);

    br=new BufferedReader(fils);

    str=null;     

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

List.add(str);

    

}

}catch(IOException e){

}

finally{

try {

br.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

try {

fils.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

}

File file1;

FileWriter filew=null;

BufferedWriter bw= null;

String list[];

try {

       

file1=new File("d:\\cc.txt");

filew = new FileWriter(file1);

    bw=new BufferedWriter(filew);

list = new String [List.size()];

for(int i=0;i<list.length;i++)

{

 list[i]=List.get(i).toString();

}

for(int i=0;i<list.length-1;i++)

{

 System.out.println(list[i]);

 //System.out.println(list[list.length-1]);

}

    

     for(int i=list.length-1;i>=0;i--)//list数组中有一行空串。所以list.length-1;

{

      

 bw.write(list[i]);

 bw.newLine();

 

}

    

} catch (IOException e) {

// TODO: handle exception

}

finally{

 

 try {

    bw.flush();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

  

     try {

bw.close();

} catch (IOException e) {

// TODO Auto-generated catch block

e.printStackTrace();

}

    

     try {

      filew.close();

     } catch (IOException e) {

      // TODO Auto-generated catch block

      e.printStackTrace();

     }

}

}

}