8282548: Create a regression test for JEditorPane.setText(null) usecase

[manukumarvs]

Create a regression test for JDK-4330998

Issue tested:
When calling JEditorPane.setText(null), the following exception is thrown:

java.lang.NullPointerException:
at java.io.StringReader.(StringReader.java:38)

Testing:
Java 1.4.0 -> Test Failed.
$ ./j2sdk1.4.0/bin/java bug4330998Win
java.lang.RuntimeException: Test failed, caught Exception java.lang.NullPointerException when calling text.setText(null)
at bug4330998Win.runTest(bug4330998Win.java:45)
at bug4330998Win.main(bug4330998Win.java:51)
Exception in thread "main"

Java 1.4.1 -> Test Passed.
$ ./j2sdk1.4.1/bin/java bug4330998Win
Test passed

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• Change must be properly reviewed

Issue

• JDK-8282548: Create a regression test for JDK-4330998

Reviewers

• Alexey Ivanov (@aivanov-jdk - Reviewer) ⚠️ Review applies to 03d7475

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk pull/7740/head:pull/7740
$ git checkout pull/7740

Update a local copy of the PR:
$ git checkout pull/7740
$ git pull https://git.openjdk.java.net/jdk pull/7740/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 7740

View PR using the GUI difftool:
$ git pr show -t 7740

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk/pull/7740.diff

[bridgekeeper]

👋 Welcome back mvs! 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]

@manukumarvs The following label will be automatically applied to this pull request:

• client

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[mlbridge]

Webrevs

• 04: Full - Incremental (954e8f0a)
• 03: Full - Incremental (03d7475a)
• 02: Full - Incremental (9291aa4e)
• 01: Full - Incremental (990b6720)
• 00: Full (f2e2bac8)

[manukumarvs]

@aivanov-jdk Can you please review this.

[manukumarvs]

Any volunteers?

[openjdk]

@manukumarvs 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:

8282548: Create a regression test for JDK-4330998

Reviewed-by: aivanov

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 323 new commits pushed to the master branch:

• 5ef1990: 8283274: Improve @JVMS usage in java.base
• 31df6a6: 8283188: Build time regression caused by JDK-8278917
• 0f1766d: 8283320: Error message for Windows libraries always points to --with-msvcr-dll no matter the actual file name
• 69e4e33: 8283056: show abstract machine code in hs-err for all VM crashes
• bad658e: 8282727: Parallel: Remove PSPromotionManager::_totally_drain
• beedae1: 8281146: Replace StringCoding.hasNegatives with countPositives
• 249d553: 8282602: Refactor awt classes javadoc to use @throws instead of @exception
• 096bca4: 8282473: Refactor swing classes javadoc to use @throws instead of @exception
• a5ebcc0: 8282072: G1: Rename CardSetPtr to CardSetContainerPtr
• 3da5204: 8283229: compiler/arguments/TestCodeEntryAlignment.java fails with release VMs
• ... and 313 more: https://git.openjdk.java.net/jdk/compare/f07b8165231799383303e5c0755d07afd2feb7fd...master

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.

As you do not have Committer status in this project an existing Committer must agree to sponsor your change. Possible candidates are the reviewers of this PR (@aivanov-jdk) but any other Committer may sponsor as well.

➡️ To flag this PR as ready for integration with the above commit message, type /integrate in a new comment. (Afterwards, your sponsor types /sponsor in a new comment to perform the integration).

[manukumarvs]

/integrate

[openjdk]

@manukumarvs
Your change (at version 03d7475) is now ready to be sponsored by a Committer.

[manukumarvs]

/integrate

[openjdk]

@manukumarvs
Your change (at version 954e8f0) is now ready to be sponsored by a Committer.

[aivanov-jdk]

/sponsor

[openjdk]

Going to push as commit b451273.
Since your change was applied there have been 343 commits pushed to the master branch:

• 8a2d5ab: 8282270: java/awt/Robot Screen Capture tests fail after 8280861
• 4df6742: 8282723: Add constructors taking a cause to JSSE exceptions
• 3f923b8: 8282704: runtime/Thread/StopAtExit.java may leak memory
• 80415e0: 8282534: Remove redundant null check in ChaCha20Cipher.engineInit
• e8caf84: 8282574: Cleanup unnecessary calls to Throwable.initCause() in jdk.compiler
• 10ccfff: 8283352: [CDS] SharedBaseAddress.java fails on x86_32
• 3e58a43: 8283287: ClassLoader.c cleanups
• 0c3094c: 8204541: Correctly support AIX xlC 16.1 symbol visibility flags
• 8384ac4: 8283057: Update GCC to version 11.2 for Oracle builds on Linux
• d8893fa: 8283059: Uninitialized warning in check_code.c with GCC 11.2
• ... and 333 more: https://git.openjdk.java.net/jdk/compare/f07b8165231799383303e5c0755d07afd2feb7fd...master

Your commit was automatically rebased without conflicts.

[openjdk]

@aivanov-jdk @manukumarvs Pushed as commit b451273.

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