resize - Java Layout Managers -

what benefits of using existing layout manager opposed writing listener handles resizing functions? instance, needed arrange buttons in grid , center grid:

int h = component.getheight() / 11; int w = component.getwidth() / 9; int offsetx = w; int offsety = h; int x = (2 * column) * w - offsetx; int y = (2 * row) * h - offsety;  setbounds(x, y, w, h); 

instead of fumbling around layout manager wrote small bit of code activated buttons whenever jpanel resized. if use layout manager, more cumbersome write code arrange , if add component jpanel, things more complex opposed adding few additions or subtractions.

so given this, there benefits using layout manager in situation or few customized lines easier use , maintain?

your code mimicking gridlayout.

setlayout(new gridlayout(11, 9)); // add components ... // profit 

to center it:

jpanel outerpanel = new jpanel(new borderlayout()); jpanel gridpanel = new jpanel(new gridlayout()); outerpanel.add(gridpanel, borderlayout.center);