I want to "click" with the mouse using a Robot object like this:

Robot bot = new Robot();

This results in:

Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Invalid combination of button flags

I even delayed the process before it starts clicking to have time to release the mouse but the same exception appears

I finally found it myself... don't know why but it works if I use "BUTTON1_MASK" instead of "BUTTON1_DOWN_MASK".