例如下程序
Object data[][] = new Object[500][6];
Object name[] = {"号码","姓名","性别","运动队","项目","序号"};
JTable nametable = new JTable(data,name); try{
            conn = DriverManager.getConnection("jdbc:odbc:SQL Server2000","zxm","123");
            stmt = conn.createStatement();
            int row = nameTable.getRowCount();
            int column = nameTable.getColumnCount();
            for(int i=0; i<row; i++){
                Vector v = new Vector();
                for(int j=0; j<column; j++){
                    v.add(nameTable.getValueAt(i,j));
                }
                System.out.println(v.get(0).toString());
                System.out.println(v.get(1).toString());
                System.out.println(v.get(2).toString());
                System.out.println(v.get(3).toString());
                System.out.println(v.get(4).toString());
                System.out.println(v.get(5).toString());
                sql = "use TJCUFE insert into ReportingTable values (" + "'" + v.get(0).toString() + "'" + "," +
                      "'" + v.get(1).toString() + "'" + "," + "'" + v.get(2).toString() + "'" + "," +
                      "'" + v.get(3).toString() + "'" + "," + "'" + v.get(4).toString() + "'" + "," +
                      "'" + v.get(5).toString() + "'" + ")";
                stmt.execute(sql);
            }
            conn.close();
        }catch(SQLException e2){
            e2.printStackTrace();
        }为什么运行时v.get(5).toString()取不到值???