A very basic example of connecting to a Cassandra node using DataStax Java Driver

MyClient.java

package com.example.cstar;

import com.datastax.driver.core.Cluster;
import com.datastax.driver.core.Row;
import com.datastax.driver.core.Session;

public class MyClient {
    public MyClient() {
    }
    
    public static void main(String[] args) {
        Cluster cluster = Cluster.builder()
            .addContactPoints("127.0.0.1")
            .build();
        Session session = cluster.connect("myschema");

        for (Row row : session.execute("SELECT * FROM users")) {
            // do something ...
        }
    }
}