RFR: 8150564: Migrate useful ExtendedRobot methods into awt.Robot

[Chen Liang]

On Wed, 27 Aug 2025 18:36:30 GMT, Damon Nguyen <dnguyen at openjdk.org> wrote:

> Some useful methods (click, glide, waitForIdle, type) in ExtendedRobot should be migrated into Robot itself so that ExtendedRobot can be removed in the future. The tests using these ExtendedRobot methods will be handled separately.

src/java.desktop/share/classes/java/awt/Robot.java line 137:

> 135:      * Default pixel step-length for mouse {@link #glide(int, int, int, int) glide}.
> 136:      */
> 137:     public final int DEFAULT_STEP_LENGTH = 2;

Is there a reason these fields are not static? Non-static final fields like these are constant only in the class and not constant when used by other classes, and require an instance to access, but I don't find these differences convincing as the reason.

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PR Review Comment: https://git.openjdk.org/jdk/pull/26969#discussion_r2305004542