Examples of ConcurrentModificationException

java.util.ConcurrentModificationException
This exception may be thrown by methods that have detected concurrent modification of an object when such modification is not permissible.
For example, it is not generally permissible for one thread to modify a Collection while another thread is iterating over it. In general, the results of the iteration are undefined under these circumstances. Some Iterator implementations (including those of all the general purpose collection implementations provided by the JRE) may choose to throw this exception if this behavior is detected. Iterators that do this are known as fail-fast iterators, as they fail quickly and cleanly, rather that risking arbitrary, non-deterministic behavior at an undetermined time in the future.
Note that this exception does not always indicate that an object has been concurrently modified by a different thread. If a single thread issues a sequence of method invocations that violates the contract of an object, the object may throw this exception. For example, if a thread modifies a collection directly while it is iterating over the collection with a fail-fast iterator, the iterator will throw this exception.
Note that fail-fast behavior cannot be guaranteed as it is, generally speaking, impossible to make any hard guarantees in the presence of unsynchronized concurrent modification. Fail-fast operations throw ConcurrentModificationException on a best-effort basis. Therefore, it would be wrong to write a program that depended on this exception for its correctness: ConcurrentModificationException should be used only to detect bugs. @author Josh Bloch @version 1.20, 03/30/06 @see Collection @see Iterator @see ListIterator @see Vector @see LinkedList @see HashSet @see Hashtable @see TreeMap @see AbstractList @since 1.2
org.candlepin.common.exceptions.ConcurrentModificationException
ConcurrentModificationException Thrown when a request attempts to modify an Entity that has already been modified by another request. This exception produces a 409 error.
org.nasutekds.server.admin.client.ConcurrentModificationException
This exception is thrown when a critical concurrent modification is detected by the client. This may be caused by another client application removing a managed object whilst it is being managed.
org.wso2.carbon.registry.core.exceptions.ConcurrentModificationException
This is thrown when a requested resource is concurrently updated, by two users.

Examples of java.util.ConcurrentModificationException

            @Override public E next () {
                checkForComodification();
                int ii = _cursor;
                if (ii >= _size) throw new NoSuchElementException();
                Object[] data = _data;
                if (ii >= data.length) throw new ConcurrentModificationException();
                _cursor = ii + 1;
                @SuppressWarnings("unchecked") E elem = (E) data[_lastRet = ii];
                return elem;
            }


            @Override public void remove () {
                if (_lastRet < 0) throw new IllegalStateException();
                checkForComodification();
                try {
                    DestroyableList.this.remove(_lastRet);
                    _cursor = _lastRet;
                    _lastRet = -1;
                    _exModCount = _modCount;
                } catch (IndexOutOfBoundsException ex) {
                    throw new ConcurrentModificationException();
                }
            }


            final void checkForComodification() {
                if (_modCount != _exModCount) throw new ConcurrentModificationException();
            }


            protected int _cursor;       // index of next element to return
            protected int _lastRet = -1; // index of last element returned; -1 if no such
            protected int _exModCount = _modCount;

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Examples of org.candlepin.common.exceptions.ConcurrentModificationException

    protected final void flush() {
        try {
            getEntityManager().flush();
        }
        catch (OptimisticLockException e) {
            throw new ConcurrentModificationException(getConcurrentModificationMessage(),
                e);
        }
    }

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Examples of org.nasutekds.server.admin.client.ConcurrentModificationException

    validateRelationDefinition(r);
    Driver ctx = getDriver();
    try {
      return ctx.managedObjectExists(path.child(r));
    } catch (ManagedObjectNotFoundException e) {
      throw new ConcurrentModificationException();
    }
  }

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Examples of org.wso2.carbon.registry.core.exceptions.ConcurrentModificationException

                    e.getMessage();
            log.error(msg, e);
            if (msg.toLowerCase().contains("lock")) {
                // there can be deadlocks due to concurrent modifications, which we need to handle
                // separately.
                throw new ConcurrentModificationException(msg, e);
            } else {
                throw new RegistryException(msg, e);
            }
        } finally {
            try {

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