JComboBox

[Rick Gentry]

I've got a JComboBox and I want to recieve an event when a new item is selected. I've tried an ActionListener and an ItemListener. Neither one wants to work for me. Any help?

[Sonny Gill]

I suggest that you post some relevant code, and somebody may be able to help.
cheers

[Rick Gentry]

Let's see here relevant code.....I don't have any, that's what I'm asking for help with. All I know is it's going to go something like this.

JComboBox box = new JComboBox(stringArray);
public void aFunction(){
   box.addSomeKindofListener();
}
public void actionFromSomeKindofListener(SomeKindofListenerEvent e){
   if(e.getSource()==box){
     //bunch of methods here to manipulate other objects
   }
}

That's about as relevant as I can get without an answer.

[Don Kiddick]

You need an ItemListener.
D.

[Rick Gentry]

Yeah, I had an ItemListener.

JComboBox box = new JComboBox(stringArray);
public void aFunction(){   
   box.addItemListener();
}
public void itemStateChanged(SomeKindofListenerEvent e){   
   if(e.getSource()==box){     
      //bunch of methods here to manipulate other objects   
   }
}

Changing the selected item activates itemStateChanged but e.getSource() doesn't return the JComboBox.

[Gregg Bolinger]

Moving to Swing...

[Gregg Bolinger]

Originally posted by Rick Gentry:
Yeah, I had an ItemListener.

JComboBox box = new JComboBox(stringArray);
public void aFunction(){   
   box.addItemListener();
}
public void itemStateChanged(SomeKindofListenerEvent e){   
   if(e.getSource()==box){     
      //bunch of methods here to manipulate other objects   
   }
}

Changing the selected item activates itemStateChanged but e.getSource() doesn't return the JComboBox.

Yes it does. But you have to cast it.

public void itemStateChanged(ItemEvent e)
{
   JComboBox temp = (JComboBox)(e.getSource());
}

[Rick Gentry]

I got it work, I was declaring the box outside the function but finished declaring it inside. So the box was null when it got to the ItemEvent. So in short I made a stupid mistake that I've made before and I'm sure I'll make again. Thanks for the help though.