Created the storage medium example

src/examples/java/StorageMediumExample.java

@@ -0,0 +1,76 @@
+import de.gnmyt.sqltoolkit.drivers.MySQLConnection;
+import de.gnmyt.sqltoolkit.storage.SQLStorageMedium;
+
+public class StorageMediumExample {
+
+    public static void main(String[] args) {
+
+        // First we need to connect to the mysql database
+        MySQLConnection connection = new MySQLConnection("localhost", "root", "password", "database").connect();
+
+        // Then we can register our user table
+        connection.getTableFactory().register(new StorageMediumExample.ConfigurationStorage(connection));
+
+        // Now we can get the storage from our table factory
+        ConfigurationStorage storage = (ConfigurationStorage) connection.getTableFactory().getStorage(ConfigurationStorage.class);
+
+        // Here we can use the methods that we created in the storage
+        storage.updateLanguage("en");
+        storage.updateVersion("1.0");
+
+        // We can also get a value by using the storage medium
+        String version = storage.getVersion();
+
+        // If you want to you can list all entries from the current storage
+        storage.getEntries().forEach(entry ->
+                System.out.println( entry.get("keyName") + " -> " + entry.get("value") ));
+    }
+
+
+    public static class ConfigurationStorage extends SQLStorageMedium {
+
+        public ConfigurationStorage(MySQLConnection connection) {
+            super(connection);
+        }
+
+        @Override
+        protected String tableName() {
+            return "config_storage";
+        }
+
+        // Here we can add some example methods to test the storage medium
+
+        /**
+         * Updates the language of the configuration storage
+         * @param newLanguage The new language
+         */
+        public void updateLanguage(String newLanguage) {
+            insertOrUpdate("language", newLanguage);
+        }
+
+        /**
+         * Gets the current language of the configuration storage
+         * @return The current language of the configuration storage
+         */
+        public String getLanguage() {
+            return get("language");
+        }
+
+        /**
+         * Updates the version of the configuration storage
+         * @param newVersion The new version
+         */
+        public void updateVersion(String newVersion) {
+            insertOrUpdate("version", newVersion);
+        }
+
+        /**
+         * Gets the current version of the configuration storage
+         * @return The current version of the configuration storage
+         */
+        public String getVersion() {
+            return get("version");
+        }
+    }
+
+}