Regular expression not accepted in Java

Hola,

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

Code:

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\<the +the\>

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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:

Code:

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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();
                }
        }
}

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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,

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"

Quote:

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Originally Posted by 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"

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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!