How to update Value row to database table？

Vaadin 6 / 7 / 8 Framework Data Binding
1

My code

       TableQuery q1 = new TableQuery("acmbooks", connectionPool);      （table  acmbooks）

        htContainer = new SQLContainer(q1);
  
          htContainer.addContainerFilter(new Equal("id", 152365));   （id  key ）

    I  can  get one row，


   but I don't kown How to update property of  Value  row ？？ 

  ((Item)htContainer.firstItemId()).getItemProperty("Property").setValue(“    I want to changed text      ”); [color=#ee3030]

(Write like this didn’t respond）
[/color]

   （I  do not see example   for update database   for use SQLContainer  in vaadin book or website！）

Another method

                     String str1 =    "UPDATE acmbooks SET content =" +“  I want to changed text  ” +  ”WHERE id = 152365“;
    
                   FreeformQuery q2 = new FreeformQuery(str1, connectionPool, "ID");
                 
                      q2.commit();

                           （[color=#e45151]

This too not right ！
[/color] ） What can I do？ Thanks！

2

I get it！
It is directly in the UI editor inside to submit ！！

  Vaadin  Is good for Java developers framework ！But memory use is slightly bigger  than java jsf2!(Don't know if my code)