How can we add opened-closed panel and button in Java?

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https://i.stack.imgur.com/d8clh.jpg

I would like to use opened-closed panel in my project like the attached photo. I use more than one panel consecutively and I want to make minimize the regarding panel sometimes. How can I use it, could you Add git link for similar code in java or do you know what the name of this type of button and panel are?



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