java - Variable assignment operator -= -
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i'm in need me explain fragment of code.
graphics2d g2d = (graphics2d) g;//create graphics object g2d int x = 200; int y = 150; point2d.double start = new point2d.double(x, y); x -= 50; point2d.double end = new point2d.double(x, y);
i know first 3 lines says x -=50
, don't understand doing there.
could please explain me.
x -= y
syntactic sugar x = x - y
.
so x -= 50;
subtract 50 x.
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