Object expressions in Kotlin allow you to create anonymous classes on the fly, which can be particularly useful for implementing interfaces or abstract classes without the need for a full-fledged named class. This helps keep your code concise and focused, especially when you only need a specific instance with overridden methods for a short time.
val myRunnable = object : Runnable { override fun run() { println("Running in a separate thread") } } Thread(myRunnable).start()