RFR: 8289389: Fix warnings: type should also implement hashCode() since it overrides Object.equals() [v3]

[Andy Goryachev]

On Tue, 19 Jul 2022 03:46:17 GMT, Nir Lisker <nlisker at openjdk.org> wrote:

>> Andy Goryachev has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   8289389: minimize the impact of collision
>
> modules/javafx.controls/src/test/java/test/javafx/scene/control/TreeViewTest.java line 3077:
> 
>> 3075:         @Override public boolean equals(Object obj) {
>> 3076:             if (obj == null) return false;
>> 3077:             return id == ((RT22599_DataType)obj).id;
> 
> Same as `ListViewTest`.

this and ListViewTest - the logic in hashCode() follows the logic in equals(). 
it is fairly safe change, as these objects are never put into a hashtable and never accessed outside of the test context.

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PR: https://git.openjdk.org/jfx/pull/821