import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;

public class Conexion {

    Connection con;

    public Conexion(String user, String password, String host) {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            con = DriverManager.getConnection("jdbc:mysql://" + host + "/mysql", user, password);
        } catch (ClassNotFoundException ex) {
            Logger.getLogger(Conexion.class.getName()).log(Level.SEVERE, null, ex);
        } catch (SQLException ex) {
            Logger.getLogger(Conexion.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    public boolean existeDB(String db) {
        try {
            ResultSet rs = con.createStatement().executeQuery("show databases");
            while (rs.next()) {
                if (rs.getString(1).equals(db)) {
                    return true;
                }
            }
        } catch (SQLException ex) {
            Logger.getLogger(Conexion.class.getName()).log(Level.SEVERE, null, ex);
        }
        return false;
    }

}