Android 如何計算 BufferedReader 行數

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BufferedReader 是讀取緩衝器，每次讀取有容量的限制為了讓他更有效率，來計算執行該次的行數
代碼如下

1. BufferedReader reader = new BufferedReader(new FileReader("file.txt"));
   
2. int lines = 0;
   
3. while (reader.readLine() != null) lines++;
   
4. reader.close();

複製代碼

原文出自
How can I get the count of line in a file in an efficient way?