Java/Regular Expressions/Paragraph

Parsing a String into Paragraphs Using a Regular Expression

import java.util.regex.Pattern;
public class Main {
  public static void main(String[] argv) throws Exception {
    CharSequence inputStr = "a\r\rb"; // Mac
    //inputStr = "a\r\n\r\nb"; // Windows
    //inputStr = "a\n\nb"; // Unix
    String patternStr = "(?<=(\r\n|\r|\n))([ \\t]*$)+";
    String[] paras = Pattern.rupile(patternStr, Pattern.MULTILINE).split(inputStr);
    for (int i = 0; i < paras.length; i++) {
      String paragraph = paras[i];
    }
  }
}

Reading Paragraphs from a String Using a Regular Expression

import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Main {
  public static void main(String[] argv) throws Exception {
    CharSequence inputStr = "a\r\rb"; // Mac
    //inputStr = "a\r\n\r\nb"; // Windows
    //inputStr = "a\n\nb"; // Unix
    String patternStr = "(^.*\\S+.*$)+";
    Pattern pattern = Pattern.rupile(patternStr, Pattern.MULTILINE);
    Matcher matcher = pattern.matcher(inputStr);
    while (matcher.find()) {
      String paragraph = matcher.group();
    }
  }
}