In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and explanations of their meanings.

Code words in text are shown as follows: "The keyset method returns a set of all the annotation keys currently held by the Annotation object."

Database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "To demonstrate the use of POI, we will use a file called TestDocument.pdf."

A block of code is set as follows:

for (int index = 0; index < sentences.length; index++) {
    String tokens[] = tokenizer.tokenize(sentences[index]);
    Span nameSpans[] = nameFinder.find(tokens);
    for(Span span : nameSpans) {
        list.add("Sentence: " + index
            + " Span: " + span.toString() + " Entity: "
            + tokens[span.getStart()]);
    }
}

The output of code sequences looks like what is shown here:

Sentence: 0 Span: [0..1) person Entity: Joe
Sentence: 0 Span: [7..9) person Entity: Fred
Sentence: 2 Span: [0..1) person Entity: Joe

New terms and important words are shown in bold.