RFR: 8274190: Use String.equals instead of String.compareTo in jdk.internal.jvmstat

[Serguei Spitsyn]

On Wed, 22 Sep 2021 19:20:35 GMT, Andrey Turbanov <github.com+741251+turbanoff at openjdk.org> wrote:

> In several places, String.compareTo was _compared_ with 0 ( via `== 0` or `!= 0`).
> Instead of this, we can use String.equals calls. `String.equals` is faster and shorter.

src/jdk.internal.jvmstat/share/classes/sun/jvmstat/perfdata/monitor/AliasFileParser.java line 145:

> 143: 
> 144:             } while ((currentToken.ttype != StreamTokenizer.TT_EOF)
> 145:                      && (!currentToken.sval.equals(ALIAS)));

Nit: Not your issue but you can also get rid of unneeded brackets () at lines 128-129, 144-145.

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PR: https://git.openjdk.java.net/jdk/pull/5638