How to create an extensible list using Java Swing

I need to make an extensible list using java swing I'll try to demonstrate:

Not expanded:

>[Expand me!]
 >[And me!]

Extension:

|[Expand me!]
     >[Expand us too!]
     >[Expand us too!]
     >[Expand us too!]
 >[And me!]

Therefore, when you click the expand me section of the list, another list will drop down and may contain more extensible lists If you click it again, its "sub list" will be undone Very basic And, as you can see, I'm not looking for JCombo@R_821_2419 @, I don't think JList can do that I would appreciate it if someone pointed me in the right direction or gave some programming examples

Thank you, mirroredfate

Solution

How to use JTree