Four. JAVA API of Zookeeper

1. Create a session

   The client can connect to the ZooKeeper server by creating a ZooKeeper instance. The four construction methods of Zookeeper are as follows:

new ZooKeeper(connectString, sessionTimeout, watcher)

        new ZooKeeper(connectString, sessionTimeout, watcher, canBeReadOnly)

        new ZooKeeper(connectString, sessionTimeout, watcher, sessionId, sessionPasswd)

        new ZooKeeper(connectString, sessionTimeout, watcher, sessionId, sessionPasswd, canBeReadOnly)

    

 

1. create node