/**
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.bitcoin.core;

import java.util.List;

/**
 * Convenience implementation of {@link PeerEventListener}.
 */
public class AbstractPeerEventListener implements PeerEventListener {
    public void onBlocksDownloaded(Peer peer, Block block, int blocksLeft) {
    }

    public void onChainDownloadStarted(Peer peer, int blocksLeft) {
    }

    public void onPeerConnected(Peer peer, int peerCount) {
    }

    public void onPeerDisconnected(Peer peer, int peerCount) {
    }

    public Message onPreMessageReceived(Peer peer, Message m) {
        // Just pass the message right through for further processing.
        return m;
    }

    public void onTransaction(Peer peer, Transaction t) {
    }

    public List<Message> getData(Peer peer, GetDataMessage m) {
        return null;
    }

    @Override
    public void onException(Throwable throwable) {
    }
}

/**
 * Copyright 2011 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.google.bitcoin.core;

import java.util.List;

/**
 * Convenience implementation of {@link PeerEventListener}.
 */
public class AbstractPeerEventListener implements PeerEventListener {
    @Override
    public void onBlocksDownloaded(Peer peer, Block block, int blocksLeft) {
    }

    @Override
    public void onChainDownloadStarted(Peer peer, int blocksLeft) {
    }

    @Override
    public void onPeerConnected(Peer peer, int peerCount) {
    }

    @Override
    public void onPeerDisconnected(Peer peer, int peerCount) {
    }

    @Override
    public Message onPreMessageReceived(Peer peer, Message m) {
        // Just pass the message right through for further processing.
        return m;
    }

    @Override
    public void onTransaction(Peer peer, Transaction t) {
    }

    @Override
    public List<Message> getData(Peer peer, GetDataMessage m) {
        return null;
    }

    @Override
    public void onException(Throwable throwable) {
    }
}

Add @Override annotations to PeerEventListener.