swing - Paint method not working on full screen - Java -


i trying create full screen paint method. want "this day" in pink blue background show up. problem is, when run program, shows painted on screen toolbar , applications instead of showing blue background "this day" in middle in pink. code below.

public static void main(string args[]) {     displaymode dm1 =         new displaymode(800, 600, 16, displaymode.refresh_rate_unknown);     runscreen runprogram = new runscreen();     runprogram.run(dm1); }  public void run(displaymode dm) {     getcontentpane().setbackground(color.blue);     setforeground(color.pink);      setfont(new font("arial", font.plain, 24));      fullscreen s = new fullscreen();     try     {         s.setfullscreen(dm, this);          try         {             thread.sleep(5000);         }         catch (exception e)         {          }      }         {         s.restorescreen();     }  }  @override public void paint(graphics g) {      g.drawstring("this day", 200, 200);  }

this seems work fine...

import java.awt.borderlayout; import java.awt.eventqueue; import java.awt.fontmetrics; import java.awt.graphics; import java.awt.graphicsconfiguration; import java.awt.graphicsdevice; import java.awt.graphicsenvironment; import java.awt.event.actionevent; import java.awt.event.keyevent; import javax.swing.abstractaction; import javax.swing.actionmap; import javax.swing.inputmap; import javax.swing.jframe; import javax.swing.jpanel; import javax.swing.keystroke; import javax.swing.uimanager; import javax.swing.unsupportedlookandfeelexception;  public class testfullscreen {      public static void main(string[] args) {         new testfullscreen();     }      public testfullscreen() {         eventqueue.invokelater(new runnable() {             @override             public void run() {                 try {                     uimanager.setlookandfeel(uimanager.getsystemlookandfeelclassname());                 } catch (classnotfoundexception ex) {                 } catch (instantiationexception ex) {                 } catch (illegalaccessexception ex) {                 } catch (unsupportedlookandfeelexception ex) {                 }                  jframe frame = new jframe("test");                 frame.setundecorated(true);                 frame.setdefaultcloseoperation(jframe.exit_on_close);                 frame.setlayout(new borderlayout());                 frame.add(new testpane());                 graphicsdevice device = graphicsenvironment.getlocalgraphicsenvironment().getdefaultscreendevice();                 device.setfullscreenwindow(frame);                 frame.setvisible(true);             }         });     }      public class testpane extends jpanel {          @override         protected void paintcomponent(graphics g) {             super.paintcomponent(g);              string text = "hello";             fontmetrics fm = g.getfontmetrics();             int x = (getwidth() - fm.stringwidth(text)) / 2;             int y = ((getheight() - fm.getheight()) / 2) + fm.getascent();             g.drawstring(text, x, y);         }             }     }

beware, "window" request made full screen window may not window used system.

you should avoid overriding paint , use paintcomponent instead. should avoid overriding paint of top level containers (like jframe).

check out performing custom painting , painting in awt , swing more details...


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