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POAn "Empty" Character Extracted from a PDF
 

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  1. POAn "Empty" Character Extracted from a PDF
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    <p>I recently tried to use PDFBox to extract text from a PDF file. It works fine for most PDFs, but for one PDF (which unfortunately I am not permitted to share), all of the periods in the sentences do not get extracted out. Instead, I get phrases like the following:</p> <pre><code>...what it would be It’ll be important later on... </code></pre> <p>It looks like instead of a period-space it is just a space, but it's not (at least on Mac OS X). If you copy the text into a text editor and start moving the text cursor through the phrase, there is an "empty character" right after the "t" in "feet". To reproduce:</p> <ul> <li>Place the cursor right before the letter "t" in "feet" and press the right arrow key. The cursor moves one step to the right.</li> <li>Press the right arrow key again, you stay right where you are.</li> <li>Press the right arrow key one more time, you continue to the other side of the space.</li> <li>Continuing to press the right arrow key behaves as expected</li> </ul> <p>It appears that PDFBox extracted some sort of "empty character" in place of a period. I've tried to replace it a few different ways but have had no luck:</p> <pre><code>String oldText = text; text = text.replace('\u0000', '.'); //Unicode null text = text.replace('\0', '.'); //C null System.out.println(oldText.equals(text)); //Returns true //Also tried text.replace(null, '.'), but it doesn't compile </code></pre> <p>What is this "empty character" and how can I replace it with the text that is supposed to be there?</p> <p>EDIT: <a href="https://stackoverflow.com/a/3396779/531762">This answer</a> suggested that the character might be a character such as <code>\uFEFF</code>, but trying to replace it with a regex as suggested did not work.</p>
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    1. COThe fact that you can't share the document (and felt compelled to say so) makes the excerpt, "places his feet Either way" somewhat creepy :-P
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      1. USRon Dahlgren
    2. COHaha, yeah! Perhaps that wasn't the best example to share because it was out of context. I've changed the example.
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      1. USThunderforge
 

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