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    <pre><code> String line = "Hi. My name is John. Who are you ?"; String[] sentences = line.split("(?&lt;=[.!?])\\s+"); for (String sentence : sentences) { System.out.println("[" + sentence + "]"); } </code></pre> <p>This produces:</p> <pre><code>[Hi.] [My name is John.] [Who are you ?] </code></pre> <h3>See also</h3> <ul> <li><a href="http://www.regular-expressions.info/tutorial.html" rel="nofollow noreferrer">regular-expressions.info tutorials</a> <ul> <li><a href="http://www.regular-expressions.info/lookaround.html" rel="nofollow noreferrer">Lookarounds</a></li> <li><a href="http://www.regular-expressions.info/charclass.html" rel="nofollow noreferrer">Character classes</a></li> </ul></li> <li><a href="http://java.sun.com/j2se/1.5.0/docs/guide/language/foreach.html" rel="nofollow noreferrer">Java language guide: the for-each loop</a></li> </ul> <hr> <p>If you're not comfortable using <code>split</code> (even though it's the recommended replacement for the "legacy" <a href="http://java.sun.com/javase/6/docs/api/java/util/StringTokenizer.html" rel="nofollow noreferrer"><code>java.util.StringTokenizer</code></a>), you can just use <em>only</em> <a href="http://java.sun.com/javase/6/docs/api/java/util/Scanner.html" rel="nofollow noreferrer"><code>java.util.Scanner</code></a> (which is more than adequate to do the job).</p> <h3>See also</h3> <ul> <li><a href="https://stackoverflow.com/questions/691184/scanner-vs-stringtokenizer-vs-string-split">Scanner vs. StringTokenizer vs. String.Split</a></li> </ul> <p>Here's a solution that uses <code>Scanner</code>, which by the way <code>implements Iterator&lt;String&gt;</code>. For extra instructional value, I'm also showing an example of using <a href="http://java.sun.com/javase/6/docs/api/java/lang/Iterable.html" rel="nofollow noreferrer"><code>java.lang.Iterable&lt;T&gt;</code></a> so that you can use the for-each construct.</p> <pre><code> final String text = "Hi. I am John.\n" + "My name is John. Who are you ?"; Iterable&lt;String&gt; sentences = new Iterable&lt;String&gt;() { @Override public Iterator&lt;String&gt; iterator() { return new Scanner(text).useDelimiter("\\s*[.!?]\\s*"); } }; for (String sentence : sentences) { System.out.println("[" + sentence + "]"); } </code></pre> <p>This prints:</p> <pre><code>[Hi] [I am John] [My name is John] [Who are you] </code></pre> <p>If this regex is still not what you want, then I recommend investing the time to educate yourself so you can take matters into your own hand.</p> <h3>See also</h3> <ul> <li><a href="https://stackoverflow.com/questions/1059127/what-is-the-iterable-interface-used-for">What is the Iterable interface used for?</a></li> <li><a href="https://stackoverflow.com/questions/839178/why-is-javas-iterator-not-an-iterable">Why is Java’s Iterator not an Iterable?</a></li> </ul> <hr> <p><em>Note</em>: the <code>final</code> modifier for the local variable <code>text</code> in the above snippet is a necessity. In an illustrative example, it makes for a concise code, but in your actual code you should refactor the anonymous class to its own named class and have it take <code>text</code> in the constructor.</p> <h3>See also</h3> <ul> <li><a href="https://stackoverflow.com/questions/714602/anonymous-vs-named-inner-classes-best-practices">Anonymous vs named inner classes? - best practices?</a></li> <li><a href="https://stackoverflow.com/questions/1299837/cannot-refer-to-a-non-final-variable-inside-an-inner-class-defined-in-a-different">Cannot refer to a non-final variable inside an inner class defined in a different method</a></li> </ul>
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    1. POHow to reformat paragraph to have each sentence on a separate line?
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    1. COhi... i dont want the Delimiter's to appear.....
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    2. CO@John: Then `split("[.!?]\\s+")`. Maybe even `split("\\s*[.!?]\\s+")`. Maybe even `split("\\s*[.!?]+\\s+")`. Feel free to clarify your unclear question to explain in more detail what is it that you want. More input, expected output, etc.
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    3. COHi... I am trying to take a file which contains a few lines of text.... and then split them up and store them in an array.... The problem that i am facing is that when i use a tokenizer it stops reading at each line.... and when i try to get in a while loop there.... it goes into an infinite loop.....
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