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## javax.xml.transform
Interface Source

All Known Subinterfaces:
  DocumentInfo, NodeInfo

All Known Implementing Classes:
  SAXSource, DOMSource, StreamSource

public interface Source

An object that implements this interface contains the information needed to act as source input (XML source or transformation instructions).

Method Summary
`java.lang.String` | `getSystemId()` Get the system identifier that was set with setSystemId.
`void` | `setSystemId(java.lang.String systemId)` Set the system identifier for this Source.

Method Detail

### setSystemId

    public void setSystemId(java.lang.String systemId)

  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.

### getSystemId

    public java.lang.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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