RFR: JDK-8064681 : Jaxp unit test need to be improved

[Mark Sheppard]

On Mon, 22 Mar 2021 10:35:03 GMT, Mahendra Chhipa <github.com+34924738+mahendrachhipa at openjdk.org> wrote:

> https://bugs.openjdk.java.net/browse/JDK-8064681

the tests set a system property and then clear that system property at the end of the test.  Is it always the case that the property being set in the test does not have a value prior to be being set? Or is it more appropriate to save the current value of the property, set the new value and then restore the original value, rather than clearing the property?

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PR: https://git.openjdk.java.net/jdk/pull/3115