regex - Remove html which have class x from string in java -

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is there way remove html java string have class "abc"? simple regex - 

replaceall("\\<.*?>","")

will remove want remove tag having class "abc".

<h1 class="abc">hey</h1> <h1 class="xyz">hello</h1>

remove h1 class abc only. note -> have ddo through regex not through parser because instance modifying html in code. don't want additional jar in code.

this should work

replaceall("<h1[^>]*?class=\"*\'*abc\"*\'*>.*?h1>","")

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