How to add items in a combobox dynamically in Java? [closed]

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How to add items in a combobox dynamically in Java? [closed]

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#1 by (4 votes)
#2 by (-2 votes)

0

I have a project on netbeans that uses Java Swing for the interface. I have some data in MYSQL that would like to show them as soon as the window is created.

Finally, how can I dynamically place items in a JComboBox in Java?

java swing combobox

asked by anonymous 01.12.2016 / 16:45

2 answers

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score 4 · Answer 1

4

As you have no more details, I'll give you the most generic answer possible.

Just use the method addItem

combobox.addItem("Item 1");
combobox.addItem("Item 2");
combobox.addItem("Item 3");

01.12.2016 / 17:08

score -2 · Answer 2

1) First you have to make the connection this can be done in Pure JDBC or JPA

JDBC Connection

JPA Connection

2) You create a DAO based on one of the example

CRUD JDBC

CRUD JPA

3) In Your JFrame class you will do the following

public class SeuFrame(){

    public SeuFrame(){
        carregarCombo();
    }

    public void carregarCombo(){

          SeuDAO dao = new SeuDAO();
          List<SuaClasse> list = dao.lista();

          for(SuaClasse item: list){
               seuCombobox.addItem(item);
          }

    }        

}