Question

when i try to get the text from a document, if it is followed by some special characters such as TM or C (for copyright) and so on, after writing it into a text file it will makes some unexpected added to it. as an example, we can consider the following:

if we have Apache™ Hadoop™! and then if we try to write in into a text using FileOutputStream then result would be like Apacheâ Hadoopâ which the â is nonsense for me and generally i want a way to detect such characters in the text and just skipping them for writing them, is there solution to this?

Answer 1

If you want just the printable ASCII range, then iterate over your string character by character building a new string. Include the character only if it’s within the range 0x20 to 0x7E.

final StringBuilder buff = new StringBuilder();
for (char c : string.toCharArray())
{
  if (c >= 0x20 && c <= 0x7E)
  {
    buff.append(c);
  }
}

final FileWriter w = new FileWriter(...);
w.write(buff.toString());
w.close();

If you want to keep carriage returns and newlines, you also need to consider 0x0A and 0x0D.