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Beep, beep, yeah!
It isn't too difficult to use sound files in Java applets or applications, but sometimes we just want to sound a warning beep. We can use the system's default beep, by using the beep() method in the Toolkit class. So if we want to sound a simple beep we only have to use this code:

  Toolkit.getDefaultToolkit().beep();
The following applet demonstrates the use of this method. When we press the button we will hear a beep sound from the computer.

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