编写一个程序,将 a.txt 文件中的单词与 b.txt 文件中的单词交替合并到 c.txt 文件中,a.txt 文件中的单词用回车符分隔,b.txt 文件中用回车或空格进行分隔。

import java.io.BufferedReader;

import java.io.FileInputStream;

import java.io.InputStreamReader;

import java.io.PrintWriter;

public class A {  

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

                  FileManage a = new FileManage("src/main/resources/a.txt");   

                  FileManage b = new FileManage("src/main/resources/b.txt");  

                 PrintWriter pw=new PrintWriter("src/main/resources/c.txt");  

                 String aWord = null;         

                 String bWord = null;        

               while((aWord = a.nextWord()) !=null ){     

                        pw.write(aWord + "\n");            

                       bWord = b.nextWord();         

                         if(bWord != null)     

                         pw.write(bWord + "\n");        

              }       

             while((bWord = b.nextWord()) != null){      

                     pw.write(bWord + "\n");     

             }             pw.close();   

 }

}

class FileManage {  

            String[] arrwords = null;

            int pos = 0;

            public FileManage(String filepath) throws Exception {   

            FileInputStream fis = new FileInputStream(filepath);  

            InputStreamReader in = new InputStreamReader(fis);   

           BufferedReader read = new BufferedReader(in);  

            String lines = null;

             StringBuffer sb = new StringBuffer();

           while ((lines = read.readLine()) != null) {   

                 sb.append(lines).append(" ");

           }  

          arrwords = sb.toString().split(" ");

             if(fis!=null){  

             fis.close();  

             }  

            if(in!=null){   

            in.close();  

           }      

           if(read!=null){

             read.close();

       }  

   }

 public String nextWord() {  

 if (pos == arrwords.length)

   return null;  

 return arrwords[pos++];

 } }