Java: prevent beep sound on key press -


i have java program launched browser, running various java.awt.button buttons. when clicked, it's fine. when key pressed corresponds button, windows makes "default beep" sound.

the buttons created this:

import java.awt.gridlayout; import java.awt.borderlayout; import java.io.*; import java.awt.panel; import java.awt.button; import java.awt.font; import java.awt.event.*; import java.lang.integer;  public class buttonpne extends panel implements actionlistener, constants {      private pclient parent = null;     private labelpne buttonlabel[] = new labelpne[8];     private panel buttonpanel[] = new panel[8];     public button thebuttons[] = new button[8];     private boolean buttonstatus[] = new boolean[8];      public buttonpne(pclient c) {          parent = c;          this.setlayout(new gridlayout(1, 8, 1, 0));          (int = 0; < 8; i++) {              buttonlabel[i] = new labelpne(parent);             buttonlabel[i].setsize(9, 9);              thebuttons[i] = new button();             thebuttons[i].setfont(buttonfont);             thebuttons[i].setactioncommand(integer.tostring(i));             thebuttons[i].addactionlistener(this);             thebuttons[i].addkeylistener(parent);              buttonpanel[i] = new panel();             buttonpanel[i].setbackground(backgroundcolor);             buttonpanel[i].setlayout(new borderlayout());             buttonpanel[i].add("north", thebuttons[i]);             buttonpanel[i].add("south", buttonlabel[i]);              this.add(buttonpanel[i]);         }          deactivate();     }

the key presses handled this:

import java.awt.event.keyevent;

...

public class pclient extends applet implements keylistener, constants {

...

    f.addkeylistener(this);

...

public void keypressed(keyevent evt) {      int thekey;      thekey = evt.getkeycode();      switch(thekey) {      case keyevent.vk_1:     case keyevent.vk_f1:         buttons.dobutton(0);         break;

...

public void dobutton(int thenumber) {      if (buttonstatus[thenumber]) {          if (parent.pollsendflag(buttons)) {              parent.chat.takefocus();             parent.compass.deactivate();             deactivate();         }     }     return; }

how can stop default beep happening on key presses?

use swing components instead of awt components.


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