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Thread: JTextPane changing text color issues

  1. #1
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    Default JTextPane changing text color issues

    Hi everyone, i'm new and I am struggling with a problem, please anyone help.

    I created a GUI using JTextPane and i've got it working, I have created a working trie tree and I am trying to implement a realtime spellchecker.

    What my program does according to my logic at the moment is if a word is not found in my trie, the word is changed to the color red.
    I know my trie is working because I system out the words that aren't in the TRIE and it does so correctly. Now when I go into the if statement for when a word isn't in the trie I try the setCharacterAttributes method on the word from its starting index to the end of the word. the indexes work because I output them too and they are correct, I counted them myself to make sure, here is my code:

    System.out.println("Misspelled words: ");
     int indexS = 0, indexE = 0;
     String all = createGui.ta.getText();
     
     SimpleAttributeSet attrs = new SimpleAttributeSet();;
     StyleConstants.setForeground(attrs, Color.red);
     StyledDocument doc = createGui.ta.getStyledDocument();
     
            while(true)
            {
                readWord(fIn);
                if(!trie.found(s))
                {
                   indexS = all.indexOf(s.toLowerCase());
                   System.out.println(s + " on line: " + lineNum);
                   indexE = indexS+s.length()-1;
                   System.out.println("indexS is at: " + indexS);
                   System.out.println("indexE is at: " + indexE);
                   doc.setCharacterAttributes(indexS,indexE, attrs, false);
                }
     
                if(ch == -1)
                    break;
            }
    Oh and by the way this is when I open an existing text file.
    Here is the GUI and output I receive from netbeans:
    GUI.pngoutput.png

    As you can see it isn't highlighting correctly, I'm not sure why, please help I've been struggling for hours.


  2. #2
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    Default Re: JTextPane changing text color issues

    This thread has been cross posted here:

    http://www.java-forums.org/awt-swing/59087-jtetpane-changing-text-colour-help.html

    Although cross posting is allowed, for everyone's benefit, please read:

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