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package javax.xml.stream.events;
/**
 * An interface for the start document event
 *
 * @version 1.0
 * @author Copyright (c) 2003 by BEA Systems. All Rights Reserved.
 * @since 1.6
 */
public interface StartDocument extends XMLEvent {

  /**
   * Returns the system ID of the XML data
   * @return the system ID, defaults to ""
   */
  public String getSystemId();

  /**
   * Returns the encoding style of the XML data
   * @return the character encoding, defaults to "UTF-8"
   */
  public String getCharacterEncodingScheme();

  /**
   * Returns true if CharacterEncodingScheme was set in 
   * the encoding declaration of the document
   */
  public boolean encodingSet();

  /**
   * Returns if this XML is standalone
   * @return the standalone state of XML, defaults to "no"
   */
  public boolean isStandalone();

  /**
   * Returns true if the standalone attribute was set in 
   * the encoding declaration of the document.
   */
  public boolean standaloneSet();

  /**
   * Returns the version of XML of this XML stream
   * @return the version of XML, defaults to "1.0"
   */
  public String getVersion();
}