java注解的类型有哪些？

// #1 定义注解

public @interface MyAnno1{

}

package util;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.SQLException;

import anno.JDBCConfig;

@JDBCConfig(ip = "127.0.0.1", database = "test", encoding = "UTF-8", loginName = "root", password = "admin")

@JDBCConfig(ip = "127.0.0.1", database = "test", encoding = "UTF-8", loginName = "root", password = "admin")

public class DBUtil {

    static {

        try {

            Class.forName("com.mysql.jdbc.Driver");

        } catch (ClassNotFoundException e) {

            e.printStackTrace();

        }

    }

    public static Connection getConnection() throws SQLException, NoSuchMethodException, SecurityException {

        JDBCConfig config = DBUtil.class.getAnnotation(JDBCConfig.class);

        System.out.println(config);

        String ip = config.ip();

        int port = config.port();

        String database = config.database();

        String encoding = config.encoding();

        String loginName = config.loginName();

        String password = config.password();

        String url = String.format("jdbc:mysql://%s:%d/%s?characterEncoding=%s", ip, port, database, encoding);

        return DriverManager.getConnection(url, loginName, password);

    }

    public static void main(String[] args) throws NoSuchMethodException, SecurityException, SQLException {

        Connection c = getConnection();

        System.out.println(c);

    }

}