MySQL

package com.codingwelt.citylife.mysql;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class MySQL {


     private String HOST = "localhost";
    private String DATABASE = "minecraft";
    private String USER = "root";
    private String PASSWORD = "";

    private Connection con;

    public MySQL(String host, String database, String user, String password) {
            this.HOST = host;
            this.DATABASE = database;
            this.USER = user;
            this.PASSWORD = password;

            connect();
    }

    public void connect() {
            try {
                    con = DriverManager.getConnection("jdbc:mysql://" + HOST + ":3306/" + DATABASE + "?autoReconnect=true", USER, PASSWORD);
                    System.out.println("[CityLife] Die Verbindung zur MySQL wurde hergestellt!");
            } catch (SQLException e) {
                    System.out.println("[CityLife] Die Verbindung zur MySQL ist fehlgeschlagen! Fehler: " + e.getMessage());
            }
    }

    public void close() {
            try {
                    if(con != null) {
                            con.close();
                            System.out.println("[CityLife] Die Verbindung zur MySQL wurde Erfolgreich beendet!");
                    }
            } catch (SQLException e) {
                    System.out.println("[CityLife] Fehler beim beenden der Verbindung zur MySQL! Fehler: " + e.getMessage());
            }
    }

    public void update(String qry) {
            try {
                    Statement st = con.createStatement();
                    st.executeUpdate(qry);
                    st.close();
            } catch (SQLException e) {
                    connect();
                    System.err.println(e);
            }
    }

    public ResultSet query(String qry) {
            ResultSet rs = null;

            try {
                    Statement st = con.createStatement();
                    rs = st.executeQuery(qry);
            } catch (SQLException e) {
                    connect();
                    System.err.println(e);
            }
            return rs;
    }
}