How to do it...

The necessary steps include the following:

1. Add the following imports to your project:

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import opennlp.tools.sentdetect.SentenceDetectorME;
import opennlp.tools.sentdetect.SentenceModel;
import opennlp.tools.util.Span;

1. Next, add the declaration for the sample text as an instance variable:

private static String text = 
    "We will start with a simple sentence. However, is it "
    + "possible for a sentence to end with a question "
    + "mark? Obviously that is possible! Another "
    + "complication is the use of a number such as 56.32 "
    + "or ellipses such as ... Ellipses may be found ... "
    + "with a sentence! Of course, we may also find the "
    + "use of abbreviations such as Mr. Smith or "
    + "Dr. Jones.";

1. Add the following try block to your main method:

try (InputStream inputStream = new FileInputStream(
        new File("en-sent.bin"))) {
    ...
} catch (FileNotFoundException ex) {
    // Handle exceptions
} catch (IOException ex) {
    // Handle exceptions
}

1. Insert this next sequence into the try block. This will instantiate the model, perform sentence detection, and then display the results:

SentenceModel sentenceModel = new SentenceModel(inputStream);
SentenceDetectorME sentenceDetector = 
    new SentenceDetectorME(sentenceModel);
String sentences[] = sentenceDetector.sentDetect(text);
for (String sentence : sentences) {
    System.out.println("[" + sentence + "]");
}

1. Execute your program. You will get the following output:

[We will start with a simple sentence.]
[However, is it possible for a sentence to end with a question mark?]
[Obviously that is possible!.]
[Another complication is the use of a number such as 56.32 or ellipses such as ... Ellipses may be found ... within a sentence!]
[Of course, we may also find the use of abbreviations such as Mr. Smith or Dr. Jones.]