Thread: JComboBox selection not showing item from object array

Hello I am trying to make a program where there is an array of strings which is filled with text from a jtextfield and put into a combobox. There is also an array of objects which is filled with items from a jlist. When you pick a string from the jcombobox, I want it so that the corresponding objects are displayed in three labels below the combobox.

Here is my code for the action events

/* This is what my string and object arrays are declared as at the top of my source code
 
private Object[]  data= new Object[100];
private String[] person = new String[100];
 
*/
 
public void actionPerformed( ActionEvent event ) {
 
  if ( event.getSource()== b2 )
  cardManager.show( deck, "c1" );
 
  else if ( event.getSource()== b3 )
  cardManager.show( deck, "c2" );
 
  else if ( event.getSource()== b4 )
  cardManager.show( deck, "c3" );
 
        else if ( event.getSource()== b1)
        {
                person[custIndex] = t1.getText();
                names.addItem(person[custIndex]);
                Object data[] = table.getSelectedValues(); 
 
                custIndex++;
 
 
        }
 
 
  }
 
 
  public void itemStateChanged( ItemEvent event) {
 
    if (event.getStateChange()== ItemEvent.SELECTED ){
 
 
                 for (ct= 0; ct<data.length; ct++){
                l1.setText((String)data[ct]);
                    }
 
 
 
 
     }
}

names is my JComboBox, and adding the person string array to the combobox is working fine when I click b1, but my ItemEvent listener does not set the label to the corresponding item in the object array data. I am using only one label just to test if it works, but it seems that my object array has no value when it is called in itemlistener. I have added the itemlistener to my combobox. My JList is table.

When I use a System.out.println() statement, it shows that the value of any item in the combobox is null, so I am not sure why my ItemListener is not setting it to the corresponding index of the object data array.

It seems to be working when I put :

for (ct= 0; ct<data.length; ct++){
l1.setText((String)data[ct]);
}

into the actionlistener for the b1 button, but when I put this for loop in my ItemListener, it does nothing.


Any help would be appreciated, thank you.