java - Adjusting the JButton size and putting it as a small button in the middle of a JFrame - 


jframe menu;   private void menuframe() {         menu = new jframe();         menu.setsize(600, 600);         menu.setdefaultcloseoperation(jframe.exit_on_close);         menu.setresizable(false);         menu.getcontentpane().setlayout(new gridlayout(4,5));         menu.getcontentpane().setbackground(new color(15, 81, 162));         jbutton game = new jbutton("new game");         game.addactionlistener(this);         menu.getcontentpane().add(game);         jbutton multi = new jbutton("multiplayer");         menu.getcontentpane().add(multi);         jbutton howto = new jbutton("how play");         menu.getcontentpane().add(howto);         jbutton credits = new jbutton("credits");         menu.getcontentpane().add(credits);          menu.setvisible(true);     }

i have 2 questions:

  1. for menu frame, want have background small buttons placed center north down center south, problem buttons placed below each other size whole width of jframe after using setsize on it
  2. how put image background menu jframe?

then small buttons placed center north down center south

try vertical box layout.


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