RFR: 8261161: Clean up warnings in hotspot/jtreg/vmTestbase tests

[Coleen Phillimore]

On Fri, 5 Feb 2021 14:48:25 GMT, Harold Seigel <hseigel at openjdk.org> wrote:

> Please review this change to clean up warnings, such as the following, in the vmTestbase tests.  
> 
> warning: [synchronization] attempt to synchronize on an instance of a value-based class 
> warning: [removal] Integer(int) in Integer has been deprecated and marked for removal
> 
> This change cleans up the warnings by using a non-value based class to synchronize on, and replacing calls such as Integer(int) with Integer.valueOf(int).
> 
> The change was tested by running Mach5 tiers 1-2 on Linux, Mac OS, and Windows, and Mach5 tiers 3-8 on Linux x64.
> 
> Thanks, Harold

Wow. thank you!

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Marked as reviewed by coleenp (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/2427