java 实现将a.txt和b.txt中的文件交替存放在c.txt文件中

要求：将a.txt 和b.txt中的文件交替放置在c.txt 文件中，其中a.txt和b.txt文件中的文字以空格或者回车将其分开

public class MainClass  {
    public static void main(String[] args) throws Exception {
        FileManager a = new FileManager("d:\\a.txt"," ");
        FileManager b = new  FileManager("d:\\b.txt"," |\n");
        FileWriter c = new FileWriter("d:\\c.txt");
        String aWord = null;
        String bWord = null;
        while((aWord =a.nextWord())!=null&&(bWord= b.nextWord())!=null)
        {
              c.write(aWord + "\n");
              c.write(bWord);
              c.write("\n");
        }
        while((aWord =a.nextWord())==null&&(bWord= b.nextWord())!=null)
        {
              c.write(bWord);
              c.write("\n");
        }
        while((bWord= b.nextWord())==null&&(aWord =a.nextWord())!=null)
        {
          c.write(aWord + "\n");

        }
        c.close();

    }
}

class FileManager {
    String[] words = null;
    int pos = 0;
    public FileManager(String fileName,String seperators) throws Exception {
    File file  = new File(fileName);
    Reader reader  = new FileReader(file);
    char[] buffer = new char[(int)file.length()];
    reader.read(buffer);
    String result = new String(buffer,0,buffer.length);
    words = result.split(seperators);

    }
    
    public String nextWord(){
     if(pos == words.length-1)
          return null;
          return words[pos++];
    }
}

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

        FileManager a = new FileManager("d:\\a.txt"," ");
        FileManager b = new  FileManager("d:\\b.txt"," |\n");
        FileWriter c = new FileWriter("d:\\c.txt");
        String aWord = null;
        String bWord = null;

        while((aWord =a.nextWord())!=null&&(bWord= b.nextWord())!=null)
        {
              c.write(aWord + "\n");
              c.write(bWord);
              c.write("\n");

        }

        while((aWord =a.nextWord())==null&&(bWord= b.nextWord())!=null)
        {
              c.write(bWord);
              c.write("\n");

        }

        while((bWord= b.nextWord())==null&&(aWord =a.nextWord())!=null)
        {
          c.write(aWord + "\n");
        }

        c.close();

    }

}

class FileManager {
　　String[] words = null;
　　int pos = 0;
　　public FileManager(String fileName,String seperators) throws Exception {
　　　　File file = new File(fileName);
　　　　Reader reader = new FileReader(file);
　　　　char[] buffer = new char[(int)file.length()];
　　　　reader.read(buffer);
　　　　String result = new String(buffer,0,buffer.length);
　　　　words = result.split(seperators);
　　}

　　public String nextWord(){
　　　　if(pos == words.length-1)
　　　　return null;
　　　　return words[pos++];
　　}
}