Question

I am trying in Java to surround a word in HTML with some markup. This code throws a ArrayIndexOutOfBoundsException when the replaceAll is called.

Pattern pattern = Pattern.compile(wordToHighlight + "\\w{0,5}");
String replacement = "<span class='highlight'>$1</span>";
Matcher matcher = pattern.matcher(html);

if (matcher != null)
    if (matcher.find())
        retVal = matcher.replaceAll(replacement);

Answer 1

You should try putting a capturing group on your search expression. i.e. wrap your string in parentheses.

i.e.

"(" + wordToHighlight + "\\w{0,5})"