Garbage collection and generation sizes

- The next option is useful if you…want to monitor how often garbage…collection is taking place in your application.…We know that you can check this using the…Visual VM application,…but if you want a quicker way just…to monitor it, this might be useful.…The argument is -verbose:gc.…The verbose argument does have…some other options you can output,…but these aren't related to memory…or garbage collection so I'm not going to cover those here.…

You can read the Java docs if you're interested.…Just to see this one in action,…I've come up with some simple code.…You could pause the video and…type this in if you'd like.…It's not too exciting.…What I've got is an array of customers…and then a never ending loop…that adds a new customer to the array.…If the number of items in the array…is going to the one hundred,…then it removes 10 of the customers from the array.…So we'll be, every so often,…removing 10 items at a time.…

Those 10 items will then be…eligible for garbage collection.…I expect if we run this with a…reasonably small heap,…