如何在java中相继运行两个sql语句

Question

很抱歉我的问题很严重，但是我在一个类中有这个ArrayList，我从另一个层的main / menu类运行，但我只是认为你需要看到这段代码才能帮助我。 下面我有两个输出：第一个显示这个ArrayList打印出来的内容 第二个显示了我想要它的样子。 我在ArrayList中有什么变化？

请记住，我正在使用三层架构

public ArrayList<BEGroup> getGroupRankings() throws SQLException {
        ArrayList<BEGroup> result = new ArrayList<>();
        Statement stm2 = mConnection.createStatement();;
        stm2.execute("select * from [Group]");
        ResultSet res = stm2.getResultSet();
        int id = 0;
        while (res.next()) {
            System.out.println(res.getString("GroupName"));
            ++id;
            Statement stm = mConnection.createStatement();
            stm.execute("Select Team.School, MatchesPlayed, (GoalsFor-GoalsAgainst) as [Goal Difference], "
                    + "Points from GroupStandings INNER JOIN Team on Team.id = GroupStandings.TeamID "
                    + "where GroupStandings.GroupID = " + id + " "
                    + "order by GroupStandings.GroupID, Points desc, [Goal Difference] desc, GoalsFor desc ");
            ResultSet res2 = stm.getResultSet();
            while (res2.next()){
                String school = res2.getString("School");
                int matchesPlayed = res2.getInt("MatchesPlayed");
                int goalDifference = res2.getInt("Goal Difference");
                int points = res2.getInt("Points");
                result.add(new BEGroup(school, matchesPlayed, goalDifference, points));
        }
        }
        return result;
    }

输出如下所示：希望它看起来像这样：

Group A                              Group A                
Group B                              School 1:     0    2    33
School 1:     0    2    33           School 2:     7    -3    7
School 2:     7    -3    7           Group B
School 3:     3    4    3            School 3:     3    4    3
School 4:     2    3    2            School 4:     2    3    2

编辑：另外，如果我把返回结果;就在当前的回报结果之上;在结尾，我几乎得到它（只有A组，而不是其他组）：

输出：

Group Rankings: 
Group A  
School 1:     0    2    33
School 2:     7    -3    7
School 3:     3    4    3
School 4:     2    3    2