Connect to Zookeeper

.gitignore

+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
\ No newline at end of file

pom.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>leader-election</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.11.0</version>
+                <configuration>
+                    <source>17</source>
+                    <target>17</target>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+    <dependencies>
+        <dependency>
+            <groupId>org.apache.zookeeper</groupId>
+            <artifactId>zookeeper</artifactId>
+            <version>3.9.1</version>
+        </dependency>
+    </dependencies>
+</project>
\ No newline at end of file

src/main/java/LeaderElection.java

+import org.apache.zookeeper.WatchedEvent;
+import org.apache.zookeeper.Watcher;
+import org.apache.zookeeper.ZooKeeper;
+
+import java.io.IOException;
+
+public class LeaderElection implements Watcher {
+    private static final String address = "172.29.3.101:2181";
+    private static final int SESSION_TIMEOUT = 3000; //dead client
+    private ZooKeeper zooKeeper;
+
+    public static void main(String[] args) throws IOException, InterruptedException {
+        LeaderElection leaderElection = new LeaderElection();
+        leaderElection.connectToZookeeper();
+        leaderElection.run();
+    }
+
+    public void connectToZookeeper() throws IOException {
+        this.zooKeeper = new ZooKeeper(address, SESSION_TIMEOUT, this);
+    }
+
+    public void run() throws InterruptedException {
+        synchronized (zooKeeper) {
+            zooKeeper.wait();
+        }
+    }
+
+    @Override
+    public void process(WatchedEvent watchedEvent) {
+        switch (watchedEvent.getType()) {
+            case None:
+                if (watchedEvent.getState() == Event.KeeperState.SyncConnected) {
+                    System.out.println("Successfully connected to Zookeeper");
+                }
+        }
+    }
+}