Hello.
Please review a small fix for jdk9.
Long long time ago the next request was filed for jdk 1.4.0:
"Today, there is no way for a program to access the UI of a JComponent.
Adding a getUI method would provide that capability and be consistent
with the fact that, for example, the JComponent's Border is accessible"
It was evaluated and was closed:
"JComponent does not have a getUI so that each class can override it to
return the UI that is appropriate for the class, such as TreeUI or
TextUI..."
The problem was in absent of covariant returns, which were added to the
jdk 1.5. So now we can add the "ComponentUI getUI()" method to the
JComponent and in the same time we will have an ability to override it
using more specific return value in subclasses.
Bug: https://bugs.openjdk.java.net/browse/JDK-4339584
Webrev can be found at: http://cr.openjdk.java.net/~serb/4339584/webrev.00
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Best regards, Sergey.
