RFR: JDK-8243156 Fix deprecation and unchecked warnings in microbenchmark

[Erik Joelsson]

This looks good to me, but I would like to hear from someone who knows 
the benchmarks to confirm that nothing relevant to the tests was lost 
when introducing autoboxing instead of explicit constructors in any of 
the cases.

/Erik

On 2020-04-20 04:51, Magnus Ihse Bursie wrote:
> This patch addresses the warnings deprecation and unchecked, which are 
> impossible to fully suppress.
>
> With this patch, the test-image can be built fully without warnings.
>
> The patch updates non-critical code to use modern solutions for 
> deprecated methods, where possible. Tested methods have been annotated 
> with SuppressWarnings instead. I'm leaving it for a future update by 
> the perf team to reconsider if it's worth testing deprecated methods.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8243156
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8243156-fix-warnings-in-microbenchmark/webrev.01
>
> /Magnus