1回答

• 

  qq_习惯就好_11

  2016-11-18 16:52:34

  已采纳

  package com.xu.io;

  
  

  import java.io.BufferedReader;

  import java.io.BufferedWriter;

  import java.io.FileReader;

  import java.io.FileWriter;

  import java.io.IOException;

  import java.util.Arrays;

  
  

  public class FileRead {

  
  

  public static void main(String[] args) throws IOException {

  //读取记事本的内容存入一个字符串中

  BufferedReader br = new BufferedReader(new FileReader("e:\\s.txt"));

  String sg = br.readLine();

  br.close();

  //把读取的字符串存入一个字符数组中

  char[] ch = sg.toCharArray();

  //调用sort方法对字符串进行排序

  Arrays.sort(ch);

  //排序后的字符数组转换为字符串;

  String sgAfter = new String(ch);

  //把排序好的字符串写入文件ss.txt

  BufferedWriter bw  = new BufferedWriter(new FileWriter("e:\\ss.txt"));

  bw.write(sgAfter);

  bw.newLine();

  bw.flush();

  //关闭写入

  bw.close();

  }

  
  

  }

  
  

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