8274163: Use String.equals instead of String.compareTo in jdk.jcmd

[turbanoff]

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.

---

Progress

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Issue

• JDK-8274163: Use String.equals instead of String.compareTo in jdk.jcmd

Reviewers

• Chris Plummer (@plummercj - Reviewer)
• Alex Menkov (@alexmenkov - Reviewer)
• Serguei Spitsyn (@sspitsyn - Reviewer)

Reviewing

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[bridgekeeper]

👋 Welcome back turbanoff! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

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[mlbridge]

Webrevs

• 00: Full (fb1f24b4)

[plummercj]

Looks good. Make sure you have done the appropriate testing.

[openjdk]

@turbanoff This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8274163: Use String.equals instead of String.compareTo in jdk.jcmd

Reviewed-by: cjplummer, amenkov, sspitsyn

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 8 new commits pushed to the master branch:

• 8b833bb: 8274048: IGV: Replace usages of Collections.sort with List.sort call
• a74c099: 8252842: Extend jmap to support parallel heap dump
• 2166ed1: 8273894: ConcurrentModificationException raised every time ReferralsCache drops referral
• 1c6fa11: 8273979: move some os time related functions to os_posix for POSIX platforms
• 45adc92: 8273578: javax/swing/JMenu/4515762/bug4515762.java fails on macOS 12
• 0fbbe4c: 8274033: Some tier-4 CDS EpsilonGC tests throw OOM
• 9d3379b: 8267356: AArch64: Vector API SVE codegen support
• 6031388: 8273714: jdk/jfr/api/consumer/TestRecordedFrame.java still times out after JDK-8273047

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

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[sspitsyn]

Looks good.
Thanks,
Serguei

[turbanoff]

/integrate

[openjdk]

@turbanoff
Your change (at version fb1f24b) is now ready to be sponsored by a Committer.

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@turbanoff This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply add a new comment to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[turbanoff]

/open

[openjdk]

@turbanoff This pull request is already open

[sspitsyn]

/sponsor

[openjdk]

Going to push as commit 9629627.
Since your change was applied there have been 683 commits pushed to the master branch:

• 0bc2683: 8274190: Use String.equals instead of String.compareTo in jdk.internal.jvmstat
• a9cb8bd: 8274168: Avoid String.compareTo == 0 to check String equality in java.management
• 20f3872: 8274261: Use enhanced-for instead of plain 'for' in jdk.jcmd
• b8d33a2: 8277029: JMM GetDiagnosticXXXInfo APIs should verify output array sizes
• 1d79cfd: 8276229: Stop allowing implicit updates in G1BlockOffsetTable
• 7719a74: 8277172: Remove stray comment mentioning instr_size_for_decode_klass_not_null on x64
• e436200: 8008243: Zero: Implement fast bytecodes
• bd92674: 8276184: Exclude lambda proxy class from the CDS archive if its caller class is excluded
• a59c9b2: 8271515: Integration of JEP 417: Vector API (Third Incubator)
• 9326eb1: 8276095: ciReplay: replay failure due to incomplete ciMethodData information
• ... and 673 more: https://git.openjdk.java.net/jdk/compare/8821b0004170e18c8e7d6e5bbe8759344ff769b1...master

Your commit was automatically rebased without conflicts.

[openjdk]

@sspitsyn @turbanoff Pushed as commit 9629627.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.