[jdk20] RFR: 8301989: new javax.swing.text.DefaultCaret().setBlinkRate(N) results in NPE

[Phil Race]

On Tue, 7 Feb 2023 22:49:55 GMT, Alexander Zuev <kizune at openjdk.org> wrote:

> Check if the component is associated with the caret before calling methods from it. Added test case that will make sure that will not happen again.

src/java.desktop/share/classes/javax/swing/text/DefaultCaret.java line 1054:

> 1052:         if (rate != 0) {
> 1053:             if (component != null && component.isEditable()) {
> 1054:                 if (flasher == null) {

So later if there is a non-editable component, what happens ?
Some existing logic for that will kick in ?

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PR: https://git.openjdk.org/jdk20/pull/122