Question

可能重复：
Reading certain lines only from input?

如果我使用BufferedReader，有没有办法可以跳过文件中的每一个奇数行？

Answer 1

只需阅读一行并弃掉它：

BufferedReader bReader = new BufferedReader(new FileReader("someFileName.txt"));
String line = null;

while(true)
{
   //skip the odd line
   bReader.readLine();

   //read an even line
   line = bReader.readLine();

   if(line != null)
      //do stuff with even line
   else
      break; //end of input
}

Answer 2


BufferedReader br = ...;
String line;
while ((line = br.readLine()) != null) {
    line = br.readLine();
    //do whatever with the data
    if (line == null) break;
}

使用BufferedReader跳过每个奇数行？

2 个答案: