RFR: 8338411: Implement JEP 486: Permanently Disable the Security Manager [v3]

[Harshitha Onkar]

On Fri, 25 Oct 2024 14:36:46 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> Sean Mullan has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 150 commits:
>> 
>>  - Merge remote-tracking branch 'jdk-sandbox/jep486' into JDK-8338411
>>  - Merge
>>  - Update @summary to replace "if the right permission is granted" can be replaced with "package java.lang is open to unnamed module".
>>  - Remove println about Security Manager.
>>  - Remove unused static variable NEW_PROXY_IN_PKG.
>>  - Remove static variable `DEFAULT_POLICY` and unused imports.
>>  - Remove hasSM() method and code that calls it, and remove comment about
>>    running test manually with SM.
>>  - clientlibs: import order
>>  - warning-string
>>  - java/net/httpclient/websocket/security/WSURLPermissionTest.java: integrated review feedback in renamed WSSanityTest.java
>>  - ... and 140 more: https://git.openjdk.org/jdk/compare/f7a61fce...cb50dfde
>
> test/jdk/javax/swing/JPopupMenu/6691503/bug6691503.java line 1:
> 
>> 1: /*
> 
> I think we can delete this test. It verifies that popup menus are displayed in a windows `isAlwaysOnTop() == true` in stand-alone apps whereas for applets `isAlwaysOnTop() == false`.
> 
> If there's no such distinction, the test tests nothing but the fact that popup menus are displayed in always-on-top windows.
> 
> The updated test does not test anything for [JDK-6691503](https://bugs.openjdk.org/browse/JDK-6691503) and its changeset https://github.com/openjdk/jdk/commit/8dff6c648be296799e4a7e0e1964d339acc0d724.

This test was initially deleted but then restored based on the following comment - https://github.com/openjdk/jdk/pull/21498#discussion_r1810297085

Since this test falls under similar category as test/jdk/javax/swing/JPopupMenu/6691503/bug6691503.java and based on your suggestion, I think we can delete it if it doesn't hold value after SM removal.

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PR Review Comment: https://git.openjdk.org/jdk/pull/21498#discussion_r1817311600