The Java Developers Almanac 1.4


Order this book from Amazon.

   
Home > List of Packages > java.util.regex  [26 examples] > Paragraphs  [2 examples]

e447. Reading Paragraphs from a String Using a Regular Expression

This example demonstrates how to read paragraphs from a CharSequence. 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.
    CharSequence inputStr = "a\r\rb"; // Mac
    inputStr = "a\r\n\r\nb";          // Windows
    inputStr = "a\n\nb";              // 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();
    }

 Related Examples
e448. Parsing a String into Paragraphs Using a Regular Expression

See also: Flags    Groups    Lines    Searching and Replacing    Tokenizing   


© 2002 Addison-Wesley.