求救！！ 这两段代码如何用java实现？有什么区别阿？

Question

public DataTable ExecDataTable(String SqlStr,string ResuleName)
{
string dbType = System.Configuration.ConfigurationSettings.AppSettings["DateBaseType"];
                       //获取数据库类型
DataSet QueryResult;           
                if (dbType == "informix")
                {
                    OdbcConnection dbConnection_ifx;
                    OdbcDataAdapter dbDataAdapter_ifx;                    dbConnection_ifx = m_Connection_ifx;
                    QueryResult = new DataSet();
                    dbDataAdapter_ifx = new OdbcDataAdapter(SqlStr, dbConnection_ifx);
                    dbDataAdapter_ifx.Fill(QueryResult, ResuleName);
                    return QueryResult.Tables[ResuleName];
                }
                else
                {
                    OleDbConnection dbConnection_orc;
                    OleDbDataAdapter dbDataAdapter_orc;                    dbConnection_orc = m_Connection_orc;
                    QueryResult = new DataSet();
                    dbDataAdapter_orc = new OleDbDataAdapter(SqlStr, dbConnection_orc);
                    dbDataAdapter_orc.Fill(QueryResult, ResuleName);
                    return QueryResult.Tables[ResuleName];
                }
                       
}
        public DataSet ExecDataSet(String SqlStr,String tablename)
        {
            string dbType = System.Configuration.ConfigurationSettings.AppSettings["DateBaseType"]; //获取数据库类型
            DataSet QueryResult;            if (dbType == "informix")
            {
                OdbcConnection dbConnection_ifx;
                OdbcDataAdapter dbDataAdapter_ifx;                dbConnection_ifx = m_Connection_ifx;
                QueryResult = new DataSet();
                dbDataAdapter_ifx = new OdbcDataAdapter(SqlStr, dbConnection_ifx);
                dbDataAdapter_ifx.Fill(QueryResult, tablename);
                return QueryResult;
            }
            else
            {
                OleDbConnection dbConnection_orc;
                OleDbDataAdapter dbDataAdapter_orc;                dbConnection_orc = m_Connection_orc;
                QueryResult = new DataSet();
                dbDataAdapter_orc = new OleDbDataAdapter(SqlStr, dbConnection_orc);
                dbDataAdapter_orc.Fill(QueryResult, tablename);
                return QueryResult;
            }
        }

Answer 1

主要是如何用java实现datatable的功能

Answer 2

java中好像没有DataTable和DataSet的功能吧？ 好像只能返回一个IList或者List<>列表了

Answer 3

java 不懂期待懂JAVA 的解决
帮你顶

Answer 4

好像java有resultset这个类的，和DataSet差不多啦！

Answer 5

回 ls,那如何实现datatable的功能呢 ?

Answer 6

java一般用的都是hibernate链接数据库
没有datatable功能，最多就是有个实体类，勉强有个dataRow的功能，
想要datatable就是实例化一个实体类的列表

Answer 7

还是看看hibernate吧
这个是java里的ado.net

Answer 8

import java.sql.*;public class TestDB { /**
 * @param args
 */
public static void main(String[] args) {
// TODO 自動生成されたメソッド・スタブ
Connection con;
                //SQL文
Statement sql;
                //Proc
                CallableStatement stmt ;
ResultSet rs;
try{
Class.forName("oracle.jdbc.driver.OracleDriver");
}
catch(ClassNotFoundException e)
{
System.out.print(""+e);
}
        try{
         con = DriverManager.getConnection("jdbc:oracle:thin:@MyDbComputerNameOrIP:1521:ORCL", "Uname","PassWord");
         sql = con.createStatement();
                //有返回值Proc
                stmt = conn.prepareCall("{? = call procName}");
                stmt.execute();         rs = sql.executeQuery("select * from chengjibiao");
         while(rs.next())
         {
         String number = rs.getString(1);
         String name = rs.getString(2);
         String date = rs.getString(3);
         int math = rs.getInt("math");
         int english = rs.getInt("english");
         System.out.print("学号: "+number);
         System.out.print(" 名前: "+name);
         System.out.print(" 出生: "+date);
         System.out.print(" 数学: "+math);
         System.out.print(" 英語: "+english);
         }
         con.close();
        }
        catch(SQLException e)
        {
         System.out.print(e);
        }
}}