CODEWITHSUNDEEP
javaswingjlabel
EnkeiRC5
EnkeiRC5

Reputation: 139

Trying to update the content of a JLabel

I'm back again with a simpler question! I'd like the content of this JLabel (triedLettersLA) to update periodically throughout the application (I have that part handled).

But I'd like to ADD text to the label. NOT rewrite it entirely. For example.. If the text said "Letters Tried: ", I'd want to add "N", and "X", and then "H" on three separate occasions. So at the end, it'd look like this "Letters Tried: N X H". Here's what I have, and it's totally not working..

This is way up top,

JLabel triedLettersLA = new JLabel("Tried letters:");
public boolean used[] = new boolean[26];

And this is lower down in my code..

StringBuffer missedLetter = new StringBuffer();
for (int le = 0; le <= 25; le++) {
     if (used[le]) missedLetter.append((char)(le + 'a'));
     String triedLettersLA.getText(t);
     triedLettersLA.setText(t + " " + missedLetter.toString());
}

Upvotes: 2

Views: 133

Answers (2)

BronzeByte
BronzeByte

Reputation: 725

Nonsence code:

String triedLettersLA.getText(t);

Change it to:

String t = triedLettersLA.getText();

Upvotes: 0

Brian Roach
Brian Roach

Reputation: 76898

The code you posted makes no sense (nor could it ever compile). Well, it would compile now, possibly.

That being said, a String in Java is immutable; you can't change it. To change the text of a JLabel you need to create a new String and call the JLabel's setText() method. 

String old = triedLettersLA.getText();
String newString = old + " N"; // this creates a new String object
triedLettersLA.setText(newString);

Upvotes: 4

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