Regular expression not accepted in Java

[Fhernd]

Hola,

I´m trying to compile the following Java RegEx expression:

\<the +the\>

As you can see, it is very simple. In egrep (UNIX utility) it works correctly, and in Notepad++, too.

This is the code that I have wrote to test it:

public class Backreferencing {
	public static void main( String[] args ) {
		try {
			BufferedReader br = new BufferedReader( new FileReader( "regex-files/ch01/ex12.backreferencing.txt" ) );
			
			String currentLine = null;
			
			Pattern p = Pattern.compile( "\\<the +the\\>" );
			
			while( ( currentLine = br.readLine() ) != null){
				
				Matcher m = p.matcher(currentLine);
				
				while( m.find() ){
					System.out.println( currentLine );
				}
			}
			
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
}

ex12.backreferencing.txt file contents:

She likes to eat chocolate. But the the chocolate is not good in exceeds.

Some idea or suggestion?

Thanks in advance.

Saludos,

[eRaaaa]

did you read Pattern (Java Platform SE 6) ?
There is no \< or \> (start and end of word) in java! for word boundaries in regex in java you can use \b -> "\\bthe +the\\b"

[Fhernd]

did you read Pattern (Java Platform SE 6) ?
There is no \< or \> (start and end of word) in java! for word boundaries in regex in java you can use \b -> "\\bthe +the\\b"

You said the key word (start and end of word). Thanks for it.

Sorry, but I am just starting with RegEx.

Thanks a lot for your help, eRaaaa!