Java - when is this object unloaded?

Question

Here is my code:

    LinkedList <Mono> list = new LinkedList ();

    list.add(new Mono (2, 2));
    list.add(new Mono (1, -1));
    list.remove (1);

Now, when the second item in the list is removed, is the object destroyed? IE, it undergoes garbage collection?

Answer 1

EDIT for new question:

Yes, the object will be eligible for garbage collection when there are no strong references remaining. However the JVM will try to do clean up garbage in big batches, so it could actually get collected at any arbitrary later time (or never if the JVM terminates before GC gets around to it)

Old answer:

Class unloading is a rare event, and will generally not happen in a timely manner (if at all.)

Specifically, even after it becomes eligible for collection it won't get collected along with "normal" new objects like your Mono instances - it's often in a special different pool (PermGen in the Oracle JVM)

You should assume that once a class is loaded it will stay loaded forever. Once you get into web applications in containers this is not always true, but anyone that has worked in those environments can tell you generally how well it (doesn't) work.