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  1. import java.util.regex.Pattern;
  2. import java.util.regex.Matcher;
  3.  
  4. class Example
  5. {
  6. 	public static void main (String[] args)
  7. 	{
  8. 		String text = "abc";
  9.     	Pattern p1 = Pattern.compile("abc([^\\r\\n]*)");
  10.     	Matcher m1 = p1.matcher(text);
  11.     	if (m1.find()) {
  12.       		System.out.println("MatchCount: " + m1.groupCount());
  13.       		System.out.println("Group 1: " + m1.group(1));
  14.     	} else {
  15.       		System.out.println("No match.");
  16.     	}
  17.       	Pattern p2 = Pattern.compile("abc([^\\r\\n]+)?");
  18.     	Matcher m2 = p2.matcher(text);
  19.     	if (m2.find()) {
  20.       		System.out.println("MatchCount: " + m2.groupCount());
  21.       		System.out.println("Group 1: " + m2.group(1));
  22.     	} else {
  23.       		System.out.println("No match.");
  24.     	}
  25. 	}
  26. }
Success #stdin #stdout 0.06s 711168KB
comments (?)
stdin
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Standard input is empty
stdout
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MatchCount: 1
Group 1: 
MatchCount: 1
Group 1: null
https://ideone.com/djdiQ9
language:
Java (12.0.1)
created:
9 years ago
visibility:
public

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