Java点名器，从记事本文件中读取

        Scanner s=new Scanner(new File("e:/names.txt"));
        int count=0;
       while(s.hasNext()) {
         System.out.println(s.nextLine());
         count++;}
       Random r=new Random();
       int index=r.nextInt(count+1);
       while(index==0) {
           index=r.nextInt(count+1);
       }
       String aa=String.valueOf(index);
       System.out.println("=========");
        s=new Scanner(new File("e:/names.txt"));
       while(s.hasNext()) {
        String line=s.nextLine();
        if(line.contains(aa)) {
            String name=line.split("\\.")[1];
            System.out.println(name);
            break;
        }
       
     
     
    
    
      
     }