Examples of java.lang.ref.Reference.enqueue()

java.lang.ref.Reference.enqueue()
Adds this reference object to the queue with which it is registered, if any.
This method is invoked only by Java code; when the garbage collector enqueues references it does so directly, without invoking this method. @return true if this reference object was successfullyenqueued; false if it was already enqueued or if it was not registered with a queue when it was created

      {
    Map.Entry entry = (Map.Entry) iter.next();
    Reference key = (Reference) entry.getKey();
    if (contains(clear, key.get())) {
        key.clear();
        key.enqueue();
    }
    List list = (List) entry.getValue();
    for (int i = list.size(); --i >= 0; ) {
        Reference value = (Reference) list.get(i);
        if (contains(clear, value.get())) {

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    List list = (List) entry.getValue();
    for (int i = list.size(); --i >= 0; ) {
        Reference value = (Reference) list.get(i);
        if (contains(clear, value.get())) {
      value.clear();
      value.enqueue();
        }
    }
      }


      /* Force processing queue */

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