java 方法的重载

Posted 2020-12-13 Da_luo

javax.comm (package). CommPortIdentifier (class) 

方法的重载：方法名一样，参数不一样，返回值不一样，实现不同的功能。

 

static CommPortIdentifier	getPortIdentifier(CommPort port)           Obtains the CommPortIdentifier object corresponding to a port that has already been opened by the application. 通过应用程序已经打开的串口获取 CommPortIdentifier  对象。
static CommPortIdentifier	getPortIdentifier(java.lang.String portName)           Obtains a CommPortIdentifier object by using a port name. 通过串口名获取 CommPortIdentifier 对象。
static java.util.Enumeration	getPortIdentifiers()           Obtains an enumeration object that contains a CommPortIdentifier object for each port in the system. 获取一个枚举对象包含 系统中每一个串口的CommPortIdentifier 对象。 enumeration 接口中的对象是 CommPortIdentifier.