Java StringTokenizer.nextToken()跳过空字段 [英] Java StringTokenizer.nextToken() skips over empty fields

问题描述

我使用制表符(/t)作为分隔符，并且我知道我的数据中有一些空白字段，例如:

I am using a tab (/t) as delimiter and I know there are some empty fields in my data e.g.:

one->two->->three

其中->等于制表符.如您所见，空白字段仍然正确地被制表符包围.使用循环收集数据:

Where -> equals the tab. As you can see an empty field is still correctly surrounded by tabs. Data is collected using a loop :

 while ((strLine = br.readLine()) != null) {
    StringTokenizer st = new StringTokenizer(strLine, "\t");
    String test = st.nextToken();
    ...
    }

但是Java会忽略此空字符串"，并跳过该字段.

Yet Java ignores this "empty string" and skips the field.

是否有一种方法可以避免这种行为，并迫使Java无论如何都要读取空字段?

Is there a way to circumvent this behaviour and force java to read in empty fields anyway?

推荐答案

完全谢谢.由于第一条评论，我找到了一个解决方案:是的，您是对的，感谢您的参考:

Thank you at all. Due to the first comment I was able to find a solution: Yes you are right, thank you for your reference:

 Scanner s = new Scanner(new File("data.txt"));
 while (s.hasNextLine()) {
      String line = s.nextLine();
      String[] items= line.split("\t", -1);
      System.out.println(items[5]);
      //System.out.println(Arrays.toString(cols));
 }

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