Example usage for java.util NoSuchElementException NoSuchElementException

Introduction

In this page you can find the example usage for java.util NoSuchElementException NoSuchElementException.

Prototype

public NoSuchElementException()

Source Link

Document

Constructs a NoSuchElementException with null as its error message string.

Usage

From source file:CircularQueue.java

public Iterator iterator() {
    return new Iterator() {
        private final int ci = consumerIndex;
        private final int pi = producerIndex;
        private int s = size;
        private int i = ci;

        public boolean hasNext() {
            checkForModification();/*from  ww  w.  j ava 2s.  c  o m*/
            return s > 0;
        }

        public Object next() {
            checkForModification();
            if (s == 0)
                throw new NoSuchElementException();

            s--;
            Object r = q[i];
            i = (i + 1) & bitmask;

            return r;
        }

        public void remove() {
            throw new UnsupportedOperationException();
        }

        private void checkForModification() {
            if (ci != consumerIndex)
                throw new ConcurrentModificationException();
            if (pi != producerIndex)
                throw new ConcurrentModificationException();
        }
    };
}

From source file:WrapperIterator.java

public int nextInt() {
    throw new NoSuchElementException();
}

From source file:WrapperIterator.java

public long nextLong() {
    throw new NoSuchElementException();
}

From source file:ShortPriorityQueue.java

/**
 * Returns the largest element in the queue.  Unlike {@link #peek()},
 * this method throws an exception if the queue is empty.
 *
 * @return The largest element in the queue.
 * @throws IllegalArgumentException If the queue is empty.
 *///  w ww.  j  a v a  2 s . com
public E first() {
    if (isEmpty())
        throw new NoSuchElementException();
    return mElts[0];
}

From source file:WrapperIterator.java

public void remove() {
    throw new NoSuchElementException();
}

From source file:WrapperIterator.java

public void setValue(Object value) {
    throw new NoSuchElementException();
}

From source file:com.phoenixst.plexus.traversals.DepthFirstTraverser.java

public Object next() {
    LOGGER.debug("next():");
    Traverser top = (Traverser) traverserStack.peek();
    LOGGER.debug("  Calling hasNext() on top Traverser.");
    descending = top.hasNext();/*from   ww w  .  java 2s .c o m*/
    Object node;
    if (descending) {
        LOGGER.debug("  Descending, setting current Traverser to top of stack");
        current = top;
        node = top.next();
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("  Creating new Traverser for " + node + ".");
            LOGGER.debug("  Pushing node and its Traverser, return node.");
        }
        nodeStack.push(node);
        traverserStack.push(traverserFactory.transform(node));
    } else {
        LOGGER.debug("  Ascending.");
        if (nodeStack.isEmpty()) {
            throw new NoSuchElementException();
        }
        if (LOGGER.isDebugEnabled()) {
            LOGGER.debug("  Popping node and Traverser.");
            LOGGER.debug("  Setting current Traverser to top of stack.");
            LOGGER.debug("  Return node.");
        }
        traverserStack.pop();
        current = (Traverser) traverserStack.peek();
        node = nodeStack.pop();
    }
    return node;
}

From source file:com.phoenixst.plexus.traversals.PreOrderTraverser.java

public Object next() {
    LOGGER.debug("next():");
    while (!traverserStack.isEmpty()) {
        Traverser t = (Traverser) traverserStack.peek();
        LOGGER.debug("  Calling hasNext() on top Traverser of stack.");
        if (t.hasNext()) {
            current = t;/*  w w  w. j  av a2  s  .c o m*/
            Object node = current.next();
            if (LOGGER.isDebugEnabled()) {
                LOGGER.debug("  Setting current Traverser to top of stack.");
                LOGGER.debug("  Pushing new Traverser for " + node + " onto stack.");
            }
            traverserStack.push(traverserFactory.transform(node));
            return node;
        }
        LOGGER.debug("  Popping top Traverser off of stack.");
        traverserStack.pop();
    }
    current = null;
    throw new NoSuchElementException();
}

From source file:edu.cornell.med.icb.goby.reads.ReadsReader.java

/**
 * Returns the next read entry from the input stream.
 * TODO: The current implementation will throw an exception if this is called before hasNext
 *
 * @return the next read entry from the input stream.
 *///from w w  w  . j  a v  a 2 s.  co m
public final Reads.ReadEntry next() {
    if (!reader.hasNext(collection, collection.getReadsCount())) {
        throw new NoSuchElementException();
    }
    final Reads.ReadEntry readEntry = collection.getReads(reader.incrementEntryIndex());
    if (readEntry.hasCompressedData() && codec == null) {
        codec = CodecHelper.locateReadCodec(readEntry.getCompressedData());

    }
    if (first) {

        for (int i = 0; i < readEntry.getMetaDataCount(); i++) {
            final Reads.MetaData md = readEntry.getMetaData(i);
            metaData.put(md.getKey(), md.getValue());
        }
        first = false;
    }
    if (codec != null) {
        final Reads.ReadEntry.Builder result = codec.decode(readEntry);
        if (result != null) {
            // the codec was able to decode compressed data.
            return result.build();
        }
    }
    return readEntry;
}

From source file:eu.stratosphere.pact.runtime.resettable.SpillingResettableIterator.java

@Override
public T next() {
    if (this.next != null || hasNext()) {
        final T out = this.next;
        this.next = null;
        return out;
    } else {//from  ww w .j  a va  2s.c om
        throw new NoSuchElementException();
    }
}