java - 用空格替换制表符

Question

final String remove = "   " // tab is 3 spaces

while (lineOfText != null)
   {
       if (lineOfText.contains(remove))
       {
           lineOfText = " ";
        }
       outputFile.println(lineOfText);
       lineOfText = inputFile.readLine();
   }

我试过运行它，但它没有用一个空格替换制表符。任何解决方案？

Answer 1

Tab 不是三个空格。这是一个通过转义获得的特殊字符，特别是 final String remove = "\t"; 和

if (lineOfText.contains(remove))
    lineOfText = lineOfText.replaceAll(remove, " ");
}

或删除 if(因为 replaceAll 不需要它)，例如，

lineOfText = lineOfText.replaceAll(remove, " ");