How to get pressed letter from JButton and compare it to a string?

I want to get a pressed letter from JButton when it was pressed

  public class ButtonDisabler implements ActionListener {

    @Override
    public void actionPerformed(ActionEvent e) {
        JButton btnGetText = (JButton) e.getSource();
        char charLetterPressed;            
        charLetterPressed=(btnGetText.getText().charAt(1));
       
        btnGetText.setEnabled(false);
    }
}

Then, use that letter and compare it to a string, then display the letter, only if it was found, into a JLabel

 char charChkWord;
     StringBuffer word = new StringBuffer();
    for (int i = 0; i < strRandomWord.length(); i++) {
        charChkWord = strRandomWord.charAt(i);
        if (charLetterPressed == String.valueOf(charChkWord)) {
            lblWord.setText(word.append(charChkWord).toString());
        }
    }

I'm not sure how to get that letter and compare it to the string.

Solution

I'm with trashgod, I'd avoid KeyListeners if you can.

I'd also set the text of the button to the character you want to use and/or set the name of the button as well

JButton btnA = new JButton("A");
btnA.setName("A");

This would allow you to make a choice over how you want to display the text on the button while providing you a means for providing additional information that might be more useful to you...

JButton button = (JButton) evt.getSource();
String text = button.getText();
// If you wanted to use the name of the button instead...
String name = button.getName();

// You would use this if you need part of the text...
char charPressed = Character.toLowerCase(text.charAt(0)); 
// You could to this to convert the character to a String for easier
// comparison...
String strCharPressed = Character.toString(text.charAt(0)).toLowerCase(); 

// A sample
String word = "This is a test";

// Finds the first occurrence of the character in the String...
// Comparison is case sensitive...
// If indexOf > -1 then the word contains the character
int indexOf = word.toLowerCase().indexOf(charPressed);
// Or, you just check to see if it is contained in the word...
boolean contains = word.toLowerCase().contains(Character.toString(charPressed));

System.out.println("indexOf = " + indexOf);
System.out.println("contains = " + contains);