Moved classic code to classic branch

src/main/java/org/openautonomousconnection/dns/utils/Database.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2024 Open Autonomous Connection - All Rights Reserved
+ *
+ * You are unauthorized to remove this copyright.
+ * You have to give Credits to the Author in your project and link this GitHub site: https://github.com/Open-Autonomous-Connection
+ * See LICENSE-File if exists
+ */
+
+package org.openautonomousconnection.dns.utils;
+
+import java.sql.Connection;
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+public class Database {
+
+    private static Connection connection;
+
+    public static Connection getConnection() {
+        return connection;
+    }
+
+    public static void connect() throws SQLException, ClassNotFoundException, InstantiationException, IllegalAccessException {
+        if (isConnected()) return;
+
+        Class.forName("com.mysql.jdbc.Driver").newInstance();
+        connection = DriverManager.getConnection("jdbc:mysql://" + Config.getDatabaseHost() + ":" + Config.getDatabasePort() + "/" +
+                Config.getDatabaseName() + "?autoReconnect=true", Config.getDatabaseUsername(), Config.getDatabasePassword());
+    }
+
+    public static void close() throws SQLException {
+        if (!isConnected()) return;
+
+        connection.close();
+        connection = null;
+    }
+
+    public static boolean isConnected() {
+        return connection != null;
+    }
+}