![]() If the previous step fails to find a protocol handler, then theĬonstructor tries to load from a system default package.If this class does not exist, or if the class exists but it is notĪ subclass of URLStreamHandler, then the next package Where is replaced by the name of the packageĪnd is replaced by the name of the protocol. It is interpreted as a list of packages separated by a vertical If the value of that system property is not null, Returns null, then the constructor finds the Or if the factory's createURLStreamHandler method If no URLStreamHandlerFactory has yet been set up,.Is called with the protocol string as an argument to create the Then the createURLStreamHandler method of that instance URLStreamHandlerFactory as the stream handler factory, If the application has previously set up an instance of.Protocol, a stream protocol handler object, an instance ofĬlass URLStreamHandler, is created for that protocol: If this is the first URL object being created with the specified Indicates that the URL should use the default port for the Version 6 Addressing Architecture is also accepted. However, the literal IPv6 address format defined in RFC 2373: IP If IPv6 literal address is used, it should beĮnclosed in square brackets ( ''), as Host can be expressed as a host name or a literal Used, but only for HTML form encoding, which is not the sameĪs the encoding scheme defined in RFC2396. The URLEncoder and URLDecoder classes can also be To manage the encoding and decoding of URLs is to use URI,Īnd to convert between these two classes using toURI() and Note, the URI class does perform escaping of itsĬomponent fields in certain circumstances. Would be considered not equal to each other. Of URL escaping, it does not recognise equivalence between the encoded Furthermore, because URL has no knowledge Responsibility of the caller to encode any fields, which need to beĮscaped prior to calling URL, and also to decode any escaped fields, The URL class does not itself encode or decode any URL componentsĪccording to the escaping mechanism defined in RFC2396. The protocol, host name, or port number is missing, the value is The relative URL need not specify all the components of a URL. Which contains only enough information to reach the resource TheĪn application can also specify a "relative URL", Indicates that after the specified resource is retrieved, theĪpplication is specifically interested in that part of theĭocument that has the tag chapter1 attached to it. This fragment is not technically part of the URL. Sign character "#" followed by more characters. The syntax and usage of scope_ids is describedĪ URL may have appended to it a "fragment", also knownĪs a "ref" or a "reference". The Literal IPv6 address formatĪlso supports scope_ids. Resource Identifiers (URI): Generic Syntax, amended by RFC 2732: Format for The syntax of URL is defined by RFC 2396: Uniform If the port is not specified, the default port for Port number to which the TCP connection is made on the remote host This component ofĪ URL can optionally specify a "port", which is the The information normally resides inĪ file, but it could be generated on the fly. Meaning of this name on the host machine is both protocolĭependent and host dependent. Information resides on a host machine named Http (HyperText Transfer Protocol) and that the The URL above indicates that the protocol to use is In general, a URL can be broken into several parts. Information on the types of URLs and their formats can be found at: Such as a query to a database or to a search engine. A resource can be something as simple as a file or aĭirectory, or it can be a reference to a more complicated object, Locator, a pointer to a "resource" on the World ![]()
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