Thread: JCombobox help

it wont work on a If statement

Can you explain? Do you get errors? Please copy and paste full text of the error message here.

to make my explanation easiser I just want to translate this into a java code:

if I select item 1 from my drop down list 24 hrs will appear in my textfield.

pseudo code:
if(selected item is #1) {
set textfield to 24 hrs
}

^^ yup thats what I mean but whats the real code for that?? what API should I use I'm very confused

Look at the doc for the JComboBox: what method will tell you which item was selected
and for the textfield: what method will set its value.

I know that getItemAt and setSelectedIndex will tell which item was selected but it wont work on if statements and I already know what method to use that will set the value of textfield its .setText

What doc are you reading for the JComboBox class? Did you see any methods with names starting with get?

it wont work on if statements

Can you explain what "won't work"?

Is it just me, or is this redundant:

public void itemStateChanged(ItemEvent event){
        if(event.getStateChange()==ItemEvent.SELECTED){

Why would you have to check to see if ItemEvent.SELECTED if that will only fire in the itemStateChanged event and you cant deselect an item in a JComboBox (or can you?). What if instead of doing that search, you instead just called a reference to your JComboBox asking for the selected item?

What's wrong with this:

public void itemStateChanged(ItemEvent event)
{
	int selected = JComboBox.getSelectedIndex();
	if(selected==1) // or if you want the first item: if(selected==0)
	{
		JTextField.setText("24 hrs");
	}
}

I got it !!!! thanks to everyone who posted

Originally Posted by aussiemcgr

Why would you have to check to see if ItemEvent.SELECTED if that will only fire in the itemStateChanged event and you cant deselect an item in a JComboBox (or can you?).

When you make a selection, the previously selected item gets deselected.

What if instead of doing that search, you instead just called a reference to your JComboBox asking for the selected item?

Then that code is liable to be executed twice.

db