Unit 4 Wrap-Up: Which Contract Are You Looking At?

Use your Component Boundary Review. Respond in 75–125 words or make an equivalent one-minute recording. Use at least two exact labels from your artifact, such as RangeSource, ValidatedRangeSensor, sensor_msgs/msg/Range, range, or frame_id.

1. What did the Java interface allow two different implementations to share?
2. What changed or became clearer after the invalid 3.70 m update was rejected?
3. What remains missing before the Java component can be claimed to publish a ROS 2 Range message?