Java/Netbeans -- Reference a jTextfield dynamically?

Question

Not sure if this is even remotely possible, but...

I have a jFrame with 10 different Textfields. Elequently named tf1, tf2, tf3...

What I'd LOVE to do is be able to reference them dynamically. Something like:

int i = 1;

while (i<11) {
    tf[i].settext("blah - " + i);
}

Any ideas? If anybody knows of a working example it'd be great.

why not store the 10 textFields in an array at the program start ? this code will work if the array name is "tf" — nabeel
– nabeel, Commented Nov 8, 2015 at 17:53
I really have no idea how to do that... I mean I can work with arrays (ie: String, int, doubles...), but are you talking about creating an array of textFields at runtime or somehow storing the existing textFields on my panel in an array? — user724198
– user724198, Commented Nov 8, 2015 at 18:19
I can work with arrays (ie: String, int, doubles...), - so why would an Array of JTextFields be any different? are you talking about creating an array of textFields at runtime - well if you want to work with an array (of any type) then you need to create the Array. So you create the Array, use a loop to create the text field and add the text field to the Array and the panel. — camickr
– camickr, Commented Nov 8, 2015 at 19:00
Hey thanks for that. Between your description and the answer below, I'm pretty sure I can work it out. Thanks! — user724198
– user724198, Commented Nov 8, 2015 at 20:56

WillShackleford · Accepted Answer · 2015-11-08 20:00:52Z

1

If you want to set the text of all the textfields in a JFrame:

Component ca[] = getContentPane().getComponents();
System.out.println("ca = " + Arrays.toString(ca));
int i = 0;
for(Component c: ca) {
    if(JTextField.class.isAssignableFrom(c.getClass())) {
        JTextField tf = (JTextField) c;
        tf.setText("blah -"+(++i));
    }
}

answered Nov 8, 2015 at 20:00

WillShackleford

7,0183 gold badges19 silver badges33 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Java/Netbeans -- Reference a jTextfield dynamically?

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related