为什么添加代码连接elasticsearch（java）后方法main不起作用

Question

我想在我的类中创建一个main方法，以测试与elasticsearch引擎的连接

所以我想在弹性搜索的对象TransportClient的构造函数getConnection里面

这是我的代码，我只想测试我与elasticsearch的连接是否正常

（当我删除了弹性搜索的部分代码时，但是当我添加它时，我有这个错误）

Exception dans l'unité d'exécution "main"java.lang.UnsupportedClassVersionError: JVMCFRE003 version supérieure incorrecte; classe=org/elasticsearch/common/transport/TransportAddress, décalage=6
    at java.lang.ClassLoader.defineClassImpl(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:274)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:69)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:521)
    at java.net.URLClassLoader.access$300(URLClassLoader.java:66)
    at java.net.URLClassLoader$ClassFinder.run(URLClassLoader.java:985)
    at java.security.AccessController.doPrivileged(AccessController.java:284)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:416)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:652)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:346)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:618)
    at java.lang.J9VMInternals.verifyImpl(Native Method)
    at java.lang.J9VMInternals.verify(J9VMInternals.java:72)
    at java.lang.J9VMInternals.initialize(J9VMInternals.java:134)


    public class EsConnectionManagerBiz {


        private String host;
        private int port;
        private String clusterName;


        public EsConnection(String host, int port, String clusterName) {
            super();
            this.host = host;
            this.port = port;
            this.clusterName = clusterName;

        }

        public EsConnection() {
            this.clusterName="elasticsearch";
            this.port=9300;
            this.host="localhost";
           System.out.println(this.clusterName);
// probleme code start
           InetSocketTransportAddress node;
       try {
           node = new InetSocketTransportAddress(InetAddress.getByName(this.host), this.port);
           // settings elasticsearch
           Settings settings = Settings.builder().put("cluster.name", this.clusterName)
                   .put("client.transport.sniff", true).build();
           TransportClient client = new PreBuiltTransportClient(settings);
           client.addTransportAddress(node);
           System.out.println("================== " +client+" ========");
       } catch (UnknownHostException e) {
           // TODO Auto-generated catch block
           e.printStackTrace();
       }
    // end
        }


        public String getHost() {
            return host;
        }

        public void setHost(String host) {
            this.host = host;
        }

        public int getPort() {
            return port;
        }

        public void setPort(int port) {
            this.port = port;
        }

        public String getClusterName() {
            return clusterName;
        }

        public void setClusterName(String clusterName) {
            this.clusterName = clusterName;
        }

        public static void main(String[] args) {
            new EsConnection();

        }
    }

提前感谢您的帮助