Don't use import wildcards.
// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.vespa.clustercontroller.core.database;
+import com.yahoo.log.LogLevel;
+import com.yahoo.vdslib.state.Node;
+import com.yahoo.vdslib.state.NodeState;
+import com.yahoo.vdslib.state.State;
import com.yahoo.vespa.clustercontroller.core.AnnotatedClusterState;
import com.yahoo.vespa.clustercontroller.core.ClusterStateBundle;
import com.yahoo.vespa.clustercontroller.core.ContentCluster;
import com.yahoo.vespa.clustercontroller.core.rpc.EnvelopedClusterStateBundleCodec;
import com.yahoo.vespa.clustercontroller.core.rpc.SlimeClusterStateBundleCodec;
-import org.apache.zookeeper.*;
-import org.apache.zookeeper.data.Stat;
+import org.apache.zookeeper.CreateMode;
+import org.apache.zookeeper.KeeperException;
+import org.apache.zookeeper.WatchedEvent;
+import org.apache.zookeeper.Watcher;
+import org.apache.zookeeper.ZooDefs;
+import org.apache.zookeeper.ZooKeeper;
import org.apache.zookeeper.data.ACL;
-import com.yahoo.log.LogLevel;
-import com.yahoo.vdslib.state.NodeState;
-import com.yahoo.vdslib.state.State;
-import com.yahoo.vdslib.state.Node;
+import org.apache.zookeeper.data.Stat;
-import java.util.logging.Logger;
-import java.util.*;
import java.io.IOException;
-import java.io.StringWriter;
import java.io.PrintWriter;
+import java.io.StringWriter;
import java.nio.charset.Charset;
+import java.util.List;
+import java.util.Map;
+import java.util.StringTokenizer;
+import java.util.TreeMap;
+import java.util.logging.Logger;
public class ZooKeeperDatabase extends Database {
