java - Buttons Don't Initially Draw -

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java - Buttons Don't Initially Draw -

i'm having issue applet buttons not draw until mouse on them. remain after that, 1 time click one, go away again. here code:

checkpanel = new jpanel(); buttonpanel = new jpanel(); buttonpanel.setlayout( new gridlayout( 1, 7 ) ); openadvancedsettings = new jbutton( "advanced settings" ); openadvancedsettings.addactionlistener( ); checkpanel = new jpanel(); checkvolt = new checkbox( "voltage", true ); checkv = new checkbox( "v gate", false ); checkw = new checkbox( "w gate", false ); checks = new checkbox( "s gate", false ); checkvolt.additemlistener( ); checkv.additemlistener( ); checkw.additemlistener( ); checks.additemlistener( ); checkpanel.setlayout( new gridlayout( 20, 8 ) ); checkpanel.add( butp ); checkpanel.add( prompt0 ); checkpanel.add( checkvolt ); checkpanel.add( prompt1 ); butt = new jbutton( "start" ); butt.addactionlistener( ); buttonpanel.add( butt ); setlayout( new borderlayout() ); add( checkpanel, borderlayout.east ); add( buttonpanel, borderlayout.north ); add( openadvancedsettings, borderlayout.south );

the first 2 adds jpanels, , lastly 1 jbutton. of buttons (all lastly one) in 2 panels.

i have come conclusion method repaint() causing happen. doing wrong?

i assuming in absence of sscce, must have failed set code, responsible creating , displaying gui, attaining concurrency in swing, within swingutilities.invokelater(...); secondly, can seek calling revalidate() method, on panel, before calling repaint(). might can solve problem time being.

hope might help in way. regards

java swing applet awt

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