java中如何调用存储过程

create procedure getsum
@n int =0<--此处为参数-->
as
declare @sum int<--定义变量-->
declare @i int
set @sum=0
set @i=0
while @i<=@n begin
set @sum=@sum+@i
set @i=@i+1
end
print 'the sum is '+ltrim(rtrim(str(@sum)))

import java.sql.*;
public class ProcedureTest{
    public static void main(String args[]) throws Exception{   
        //加载驱动   
        DriverManager.registerDriver(new sun.jdbc.odbc.JdbcOdbcDriver());   
        //获得连接   
        Connection conn=DriverManager.getConnection("jdbc:odbc:mydata","sa","");
    //创建存储过程的对象         
    CallableStatement c=conn.prepareCall("{call getsum(?)}");                
    //给存储过程的参数设置值         
    c.setInt(1,100);   //将第一个参数的值设置成100                
    //执行存储过程         
    c.execute();        
    conn.close();
    }
}

alter procedure getsum
@n int =0,
@result int output
as
declare @sum int
declare @i int
set @sum=0
set @i=0
while @i<=@n begin
set @sum=@sum+@i
set @i=@i+1
end
set @result=@sum