jSerialcomm does not find all serial ports

[Spookyguy]

I have an application running on a Raspi 2B using jSerialcomm. There are three serial ports (/dev/ttyUSB1, /dev/tty/USB0 and /dev/tty/AMA0) on the device, but SerialPort.getCommPorts() only returns ttyAMA0. Does anyone have an idea, why SerialPort.getCommPorts() does not return USB0 and USB1?

[jsnkan]

SerialPort.getCommPorts() returns a list of all available ports, that being said /dev/tty/AMA0 can be the TX, RX pins for the Raspberry. That's why the function doesn't return USB0 or USB1.