Authenticatorjava.lang.Object |---java.net.Authenticatorpublic abstract class Authenticatorextends ObjectAuthenticator ...
DatagramSocketImpljava.lang.Object |---java.net.DatagramSocketImplpublic abstract class DatagramSocketImplextends Object...
InterfaceAddressjava.lang.Object |---java.net.InterfaceAddresspublic class InterfaceAddressextends Object此类表示网络接...
URIjava.lang.Object |---java.net.URIpublic final class URIextends Objectimplements ComparableURI, Serializable表示统一资...