java - How to create independent JPanel-Layers within JFrame and repaint each indiviually -
i'm searching way paint several jcomponents
above each other (overlap) , still being able individually access , alter them.
e.g. paint 3 jpanels
transparent backgrounds - each containing circle, rectangle or line. afterwards, i'd change appearance of circle. other 2 should not repainted (similarly layers in photoshop).
my current project has jpanel
thousands of lines , need change rectangle in on mouseover if redraw complete jpanel
each time laggy.
is there decent way accomplish that? thank ideas!
i need change rectangle in
you can invoke:
panel.repaint(rectangle); // or panel.repaint(x, y, width, height);
to specify rectangular area repainted.
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