int tick = 10;
for (int i = 0; i < tick; ++i) {
println("Beep : " + i);
// Ring the bell again using the Toolkit
java.awt.Toolkit.getDefaultToolkit().beep();
try {
Thread.sleep(1011); // introduce delay
} catch (InterruptedException e) {
}
}
https://www.codercrunch.com/question/2123074635/how-generate-beep-java