java - 此代码的输出清晰

Question

 FileInputStream filepath= new FileInputStream(path+ "/" + file);
 BufferedReader br= new BufferedReader(new InputStreamReader(filepath));
 StringBuffer stringbuffer= new StringBuffer();
 String strLine;
 //Assuming there is some file with some data in it
 while((strLine = br.readLine())!=null)
 {
 stringbuffer.append(strLine);
 stringbuffer.append("\f");
 }

最后strLine的值会是null还是readline得到的数据？

Answer 1

它只能为 null，因为这是循环停止的唯一条件。