Examples of java.util.TooManyListenersException

java.util.TooManyListenersException

The TooManyListenersException Exception is used as part of the Java Event model to annotate and implement a unicast special case of a multicast Event Source.

The presence of a "throws TooManyListenersException" clause on any given concrete implementation of the normally multicast "void addXyzEventListener" event listener registration pattern is used to annotate that interface as implementing a unicast Listener special case, that is, that one and only one Listener may be registered on the particular event listener source concurrently.
@see java.util.EventObject @see java.util.EventListener @version 1.14 05/11/17 @author Laurence P. G. Cable @since JDK1.1

            throws TooManyListenersException {


        if (sipStack.sipListener == null) {
            sipStack.sipListener = sipListener;
        } else if (sipStack.sipListener != sipListener) {
            throw new TooManyListenersException(
                    "Stack already has a listener. Only one listener per stack allowed");
        }


        if (logger.isLoggingEnabled(LogLevels.TRACE_DEBUG))
            logger.logDebug("add SipListener " + sipListener);

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     * @throws TooManyListenersException if there is more than one listener
     */
    public void addLineNumberListener(LineNumberListener listener,
            int lineNoLimit) throws TooManyListenersException {
        if (this.listener != null)
            throw new TooManyListenersException();
        if (lineNoLimit < 2)
            throw new IllegalArgumentException(
                    "LineNoLimit cannot be less than 2");


        this.listener = listener;

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    if (debug)
      z.reportln( "RXTXPort:addEventListener()");
    if( SPEventListener != null )
    {
      throw new TooManyListenersException();
    }
    SPEventListener = lsnr;
    if( !MonitorThreadAlive )
    {
      MonitorThreadLock = true;

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    public void setImportEventListener( ImportEventListener listener )
  throws TooManyListenersException
    {
  if ( _listener != null )
      throw new TooManyListenersException( Messages.message( "dsml.onlyOneListener" ) );
  _listener = listener;
    }

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     * @throws TooManyListenersException
     */
    public void addCLAIMListener(ClaimMessageListener listener)
            throws TooManyListenersException {
        if (claimListener != null) {
            throw new TooManyListenersException();
        }
        claimListener = listener;
    }

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     * MMLリスナを追加する。
     * @param listener MMLリスナリスナ
     */
    public void addMMLListner(MmlMessageListener listener) throws TooManyListenersException {
        if (mmlListener != null) {
            throw new TooManyListenersException();
        }
        mmlListener = listener;
    }

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   * @tests java.util.TooManyListenersException#TooManyListenersException()
   */
  public void test_Constructor() {
    // Test for method java.util.TooManyListenersException()
    try {
      throw new TooManyListenersException();
    } catch (TooManyListenersException e) {
      assertNull(
          "Message thrown with exception constructed with no message",
          e.getMessage());
    }

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   * @tests java.util.TooManyListenersException#TooManyListenersException(java.lang.String)
   */
  public void test_ConstructorLjava_lang_String() {
    // Test for method java.util.TooManyListenersException(java.lang.String)
    try {
      throw new TooManyListenersException("Gah");
    } catch (TooManyListenersException e) {
      assertEquals("Incorrect message thrown with exception", "Gah", e
          .getMessage());
    }
  }

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            // awt.181=Attempt to register context as its listener.
            throw new IllegalArgumentException(Messages.getString("awt.181")); //$NON-NLS-1$
        }
        if (listener != null) {
            // awt.173=One listener is already exist.
            throw new TooManyListenersException(Messages.getString("awt.173")); //$NON-NLS-1$
        }


        listener = dsl;
    }

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        if (dtl == this) {
            // awt.176=DropTarget cannot be added as listener to itself
            throw new IllegalArgumentException(Messages.getString("awt.176")); //$NON-NLS-1$
        }
        if (dropTargetListener != null) {
            throw new TooManyListenersException();
        }
        dropTargetListener = dtl;
    }

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