- All Known Implementing Classes:
 DOMSource,SAXSource,StAXSource,StreamSource
public interface Source
An object that implements this interface contains the information
 needed to act as source input (XML source or transformation instructions).
- Since:
 - 1.4
 
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Method Summary
Modifier and TypeMethodDescriptionGet the system identifier that was set with setSystemId.default booleanisEmpty()Indicates whether theSourceobject is empty.voidsetSystemId(String systemId) Set the system identifier for this Source. 
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Method Details
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setSystemId
Set the system identifier for this Source.The system identifier is optional if the source does not get its data from a URL, but it may still be useful to provide one. The application can use a system identifier, for example, to resolve relative URIs and to include in error messages and warnings.
- Parameters:
 systemId- The system identifier as a URL string.
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getSystemId
String getSystemId()Get the system identifier that was set with setSystemId.- Returns:
 - The system identifier that was set with setSystemId, or null if setSystemId was not called.
 
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isEmpty
default boolean isEmpty()Indicates whether theSourceobject is empty. Empty means that there is no input available from this Source.- Implementation Requirements:
 - The default implementation of this method throws
 
UnsupportedOperationException. - Returns:
 - true if the 
Sourceobject is empty, false otherwise 
 
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