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<TITLE>Reading Paragraphs from a String Using a Regular Expression
(Java Developers Almanac Example)
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<h3>
e447.
Reading Paragraphs from a String Using a Regular Expression</h3>
This example demonstrates how to read paragraphs from a
<code>CharSequence</code>. A paragraph is a contiguous sequence of non-blank
lines separated by one or more blank lines. The lines in a paragraph
can be terminated with any of the legal line termination character
sequences: \r, \r\n, or \n.
<pre>
CharSequence inputStr = <font color="#0066ff"><i>"a\r\rb"</i></font>; // Mac
inputStr = <font color="#0066ff"><i>"a\r\n\r\nb"</i></font>; // Windows
inputStr = <font color="#0066ff"><i>"a\n\nb"</i></font>; // Unix
// Compile the pattern
String patternStr = "(^.*\\S+.*$)+";
Pattern pattern = Pattern.compile(patternStr, Pattern.MULTILINE);
Matcher matcher = pattern.matcher(inputStr);
// Read the paragraphs
while (matcher.find()) {
// Get the paragraph
String paragraph = matcher.group();
}
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Related Examples
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e448. <a class="eglink" href="ParsePara.html?l=rel">
Parsing a String into Paragraphs Using a Regular Expression
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See also:
<a class="eglink" href="/egs/java.util.regex/pkg.html?l=rel#Flags">
Flags
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<a class="eglink" href="/egs/java.util.regex/pkg.html?l=rel#Groups">
Groups
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<a class="eglink" href="/egs/java.util.regex/pkg.html?l=rel#Lines">
Lines
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<a class="eglink" href="/egs/java.util.regex/pkg.html?l=rel#Searching%20and%20Replacing">
Searching and Replacing
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<a class="eglink" href="/egs/java.util.regex/pkg.html?l=rel#Tokenizing">
Tokenizing
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