Hi, so upon digging into older clients, I remember that Project Fubegeren client itself does NOT have a maximize/resizable window button.

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Furthermore, I came across another similar GUI window design that does NOT have a maximize/resizable window button, but also does NOT have a minimize window button. (See below )



I was wondering if this is a capability of Java, or if this is a capability of something else.
I have looked, and I have not seen any examples declaring with this for standard Java, so I am assuming that it is a further compatible component, though I don't know which or what.

Clarification on this is appreciated.