11. Threads

Review the presentation Threads

Tasks

1. Explore the jtm.activity11 package
2. View Activity11.png to understand the design and three different approaches to filling arrays.
3. Implement the ArrayFiller and ArrayFillerManager classes to pass unit tests.

 To check the processor load, run the command top or System monitor.

You can also add a CPU monitor:

1. Right-click on an empty space on the panel, select Panel — Add new Items..
2. Select CPU Graph and press Add.
3. Then left-click on CPU graph to open the task manager.

4. You can also install gnome-system-monitor):

   sudo apt install gnome-system-monitor

   Then run Start menu — System — System monitor.

 You can implement latency with the Thread.sleep(latency); method.

Alternative

• ExecutorService
• CompletableFuture