Tricky error on JComboBoxes

Question

Hi!
I�m working on a GUI and
I have two JComboBoxes, say c1 an c2
My class is using anotherClass that is creating
the JcomboBoxes like this:
public myClass
JCombBox c1, c2 ;
public myClass()
  anotherClass a  = new anotherClass() ;
  c1 = a.c1 ;
  c2  =a.c1 ;
//addItemListener on both c1 c2
public void itemStateChanged
              if(y.getSource() == c1 && y.getStateChange() == ItemEvent.SELECTED) 
              //something happens
          if(y.getSource() == c2 && y.getStateChange() == ItemEvent.SELECTED) 
          //something else happens
public anotherClass
      public JComboBox c1
  public antotherClass()
///initiating c1
The problem is that when the c1 menu is activade by clicking
on it:  the program enters both the c1-if in itemStateChange
and the c2.
c1, c2 are refering to the same object but the item-if
should not react if not the correct referens is activated.
This works in an almost identical application I have
Does anyone ever seen anything like this?
It�s not logical? Or did I oversee something?
KR//jF

Answer 1

Hi!
I�m working on a GUI and
I have two JComboBoxes, say c1 an c2
My class is using anotherClass that is creating
the JcomboBoxes like this:
public myClass
JCombBox c1, c2 ;
public myClass()
anotherClass a  = new anotherClass() ;
c1 = a.c1 ;
c2  =a.c1 ;
So both c1 and c2 point to the same Combo box i.e. a.c1! Are you sure you wanted this because it would explain your porblem.
//addItemListener on both c1 c2Why not use separate listeners fo each combo box?
public void itemStateChanged
if(y.getSource() == c1 &&
rce() == c1 && y.getStateChange() ==
ItemEvent.SELECTED)
//something happens
if(y.getSource() == c2 &&
) == c2 && y.getStateChange() == ItemEvent.SELECTED)
//something else happens
public anotherClass
public JComboBox c1
public antotherClass()
///initiating c1
The problem is that when the c1 menu is activade by
clicking
on it: the program enters both the c1-if in
itemStateChange
and the c2.
c1, c2 are refering to the same object but the
item-if
should not react if not the correct referens is
activated.
This works in an almost identical application I have
Does anyone ever seen anything like this?
It�s not logical? Or did I oversee something?
KR//jF