我是java新手，正在尝试将数据插入netbeans jframe上的三个表中。我已经在mysql上创建了数据
第一个表包含主键

create table TraineeDetals(
TraineeID smallint unsigned not null auto_increment primary key,
FirstName varchar(100) not null,
MiddleName varchar(100) not null,
LastName varchar(100) not null
)

另一个表有外键

create table CollegeDetails(
collegeName varchar(100) not null,
Specialization varchar(100) not null,
TraineeID smallint unsigned not null,
constraint 'fk_Trainee'
foreign key (TraineeID) references TraineeDetails (TraineeID)
on delete cascade
on update restrict
)

现在我想使用jframe插入数据，所以在java代码中我做到了这一点

String url="jdbc:mysql://localhost/mysql";
   String user="root";
   String pass="root";

   private void 
   SaveButtonActionPerformed(java.awt.event.ActionEvent evt) {  

   try{

        Class.forName("com.mysql.jdbc.Driver");
        Connection con=DriverManager.getConnection(url, user, 
        pass);
        String sql="Insert into TraineeDetails 
        (FirstName,MiddleName,LastName)values(?,?,?)";
        PreparedStatement pst =con.prepareStatement(sql);

        pst.setString(1, firstNameTextFiled.getText());
        pst.setString(2, MiddleNameTextField.getText());
        pst.setString(3, LastNameTextField.getText());

        String sql2 = "Insert into CollegeDetails (CollegeName, 
        Specialization,TraineeID)values(?,?,?)";
        PreparedStatement pst2 =con.prepareStatement(sql2);

        pst2.setString(1, CollegeNameTextField.getText());
        pst2.setString(2, SpecializationTextField.getText());
        pst.setString(3, TraineeIDTextField.getText());

        pst.executeUpdate();
        pst2.executeUpdate();

        JOptionPane.showInputDialog(this,"Insert 
        Successfully");

        clearText();

    }
    catch(Exception e)
    {
        JOptionPane.showInputDialog(this,e.getMessage());
    }
    }

此代码仅显示表TraineDetails的数据
所有数据都必须从这里添加，id必须是自动递增的。

之后，管理员可以显示他在这里添加的数据。jframe只显示TraineDetails表的数据如何修复它

请问，我要做什么插入自动递增主键和外键，并显示数据一起添加后？我的java代码呢，有什么遗漏吗？