Remote screen sharing is used in various applications and services, from web conferencing to remote access applications. A back-office employee can use it to consult a colleague on the frontline or a technical support specialist can use it to see exactly what their client sees.
You may go with a third-party application like a TeamViewer. But what if you need to have the remote access capabilities right in your Java application? In this case, you may want to go the other direction.