Connect ZK

public static void main(String[] args) {
        CuratorFramework curator = CuratorFrameworkFactory.builder().connectString("127.0.0.1")
                .retryPolicy(new RetryOneTime( 4))
                .connectionTimeoutMs(10000)
                .sessionTimeoutMs(6000)
                .build();
        curator.start();
    }

Error Messages:
Error: A JNI error has occurred, please check your installation and try again
Exception in thread “main” java.lang.NoClassDefFoundError: org/apache/curator/RetryPolicy
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2701)
at java.lang.Class.privateGetMethodRecursive(Class.java:3048)
at java.lang.Class.getMethod0(Class.java:3018)
at java.lang.Class.getMethod(Class.java:1784)
at sun.launcher.LauncherHelper.validateMainClass(LauncherHelper.java:544)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:526)
Caused by: java.lang.ClassNotFoundException: org.apache.curator.RetryPolicy
at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:349)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
… 7 more

To solve it, it is not suitable for the execution of the main method, just use the following method

@Test
    public void testzk() {
        CuratorFramework curatorFramework = Demo.getCuratorFramework();
        System.out.println(curatorFramework);

    }




public static CuratorFramework getCuratorFramework() {

        CuratorFramework client = CuratorFrameworkFactory.builder().connectString("127.0.0.1:2181")
                .connectionTimeoutMs(60 * 1000)
                .sessionTimeoutMs(60 * 1000).retryPolicy(new RetryUntilElapsed(1000, 4)).build();

        client.start();

        return client;
    }