java 二维数组如何存入数据库

using System;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Xml;
using System.Xml.Serialization;
using System.IO;
 
namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private string m_strXML = "";
 
        // 将二维数组序列化成XML
        private void button1_Click(object sender, EventArgs e)
        {
            string[][] str = { new string[] { "1","2","3" }, new string[] { "A","B","C" } };
            XmlSerializer xml = new XmlSerializer( str.GetType() );
            System.IO.MemoryStream ms = new System.IO.MemoryStream();
            XmlTextWriter writer = new XmlTextWriter(ms, Encoding.Default);
            xml.Serialize(writer, str);
 
            // 得到序列化后的XML字符串,可以直接保存到数据库
            m_strXML = Encoding.Default.GetString(ms.ToArray());
            MessageBox.Show(m_strXML);
        }
 
        // 把XML反序列化为二维数组
        private void button2_Click(object sender, EventArgs e)
        {
            // 从数据库取出XML字符串，这里使用m_strXML变量
            XmlSerializer xml = new XmlSerializer( typeof(string[][]) );
            StreamReader sr = new StreamReader(new MemoryStream(System.Text.Encoding.Default.GetBytes(m_strXML)), System.Text.Encoding.Default);
            string[][] str=(string[][])xml.Deserialize(sr);
            foreach (string[] s1 in str)
            {
                foreach (string s2 in s1)
                {
                    MessageBox.Show(s2);
                }
            }
        }     
    }