类的使用
com.gprinter.io.PortManager

使用PortManager的程序包

程序包	说明
com.gprinter.io

com.gprinter.io中PortManager的使用

com.gprinter.io中PortManager的子类

限定符和类型	类和说明
class	BluetoothPort Created by Administrator
class	EthernetPort Created by Administrator
class	SerialPort Created by Administrator
class	UsbPort Created by Administrator