请问如何在java中实现对oracle数据库的操作
先谢谢大家了，我这个代码只能实现查询，请问应该修改才能实现在oracle中建表，增加，删除，更新操作，谢谢。

Java code

import java.sql.*;public class ConnectOracle {    public static void main(String[] args) {        Connection conn = null;        PreparedStatement prstm = null;        ResultSet rs = null;        try {//------------------------------------------            Class.forName("oracle.jdbc.driver.OracleDriver");            String url = "jdbc:oracle:thin:@127.0.0.1:1521:xu"; // 数据库连接字符串            String user = "scott";             String password = "tiger";             conn = DriverManager.getConnection(url, user, password); // 获取连接//-------------------------------------------            prstm = conn.prepareStatement("SELECT * FROM BUDGET_BASE_DATA");            rs = prstm.executeQuery();            System.out.println("查询结果为：" );            while (rs.next()) {                System.out.println(rs.getString("ID") +"  "+ rs.getString("TYPE"));            }            prstm = conn.prepareStatement("create table zltest(aa number,bb varchar2(10))");            System.out.print("done");                    } catch (ClassNotFoundException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } catch (SQLException e) {            // TODO Auto-generated catch block            e.printStackTrace();        } finally {            // 使用完毕进行相关内容的关闭，注意相关顺序            if (rs != null) {                try {                    rs.close();                } catch (SQLException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if (prstm != null) {                try {                    prstm.close();                } catch (SQLException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }            }            if (conn != null) {                try {                    conn.close();                } catch (SQLException e) {                    e.printStackTrace();                }            }        }    }}

[解决办法]
prstm = conn.prepareStatement("insert into t(a,b,c) values(a,b,c)");
pstmt.executeUpdate();