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regex - how to match string, but not xxstring

(explanation of blog post title: where xx is any number of letters)

i want to find/search for all instances of "change" in a file in eclipse, but NOT match instances of "onchange":


will match strings like:

change in:
<h:outputText value="Please change your password" />

changePwdPanel in:
oncomplete="#{rich:component('changePwdPanel')}.show()" />


onchange in:
<a4j:support event="onchange" reRender="additionalConfigReqion">

\b is a word boundary

thanks to Jan Goyvaerts's post How to match whole words with a regular expression for pointing me in the right direction :)

search strings i googled to find the answer i was looking for:
regex match whole word
regex match string dont match certain part of the string

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