The following example shows how to simulate mouse and key presses in Java using java.awt.Robot class.

 try {
    Robot robot = new Robot();
    
    // Simulate a mouse click
    robot.mousePress(InputEvent.BUTTON1_MASK);
    robot.mouseRelease(InputEvent.BUTTON1_MASK);
    
    // Simulate a key press
    robot.keyPress(KeyEvent.VK_A);
    robot.keyRelease(KeyEvent.VK_A);
} catch (AWTException e) {
    e.printStackTrace();
}