👉 A system that does not have a separate thread to execute its tasks, such as a web browser or a database connection. This is typically achieved by using libraries like `Thread` and `ExecutorService` in Java. In programming, it's common to use `new Thread()` for creating a new instance of a class with the same name that will run on a separate thread from the calling thread. The `ExecutorService` allows multiple threads to execute concurrently without blocking each other. For example: ```
