Re: RFR: 8149330: Capacity of StringBuilder should not get close to Integer.MAX_VALUE unless necessary

[Martin Buchholz]

In your test you refer to "Utf8"  but there's no UTF-8 in use here.
You probably mean UTF-16?

You could port Vector/ArrayManagement that I wrote when fixing
ArrayList/Vector, but I see there are more existing tests for capacity
of StringB*er