RFR: 8315804: Open source several Swing JTabbedPane JTextArea JTextField tests [v5]

[Damon Nguyen]

> These are the tests being converted:
> 
> javax/swing/JTabbedPane/4703690/bug4703690.java
> javax/swing/JTabbedPane/GetComponentAt/GetComponentAtTest.java
> javax/swing/JTabbedPane/ReplaceCompTab/ReplaceCompTab.java
> javax/swing/JTextArea/4849868/bug4849868.java
> javax/swing/JTextField/4244613/bug4244613.java

Damon Nguyen has updated the pull request incrementally with one additional commit since the last revision:

  Use method reference

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/15747/files
  - new: https://git.openjdk.org/jdk/pull/15747/files/7da26827..c4fdc7c1

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=15747&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=15747&range=03-04

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/15747.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/15747/head:pull/15747

PR: https://git.openjdk.org/jdk/pull/15747