private void searchNextButtonActionPerformed(java.awt.event.ActionEvent evt) {
        String text = textBox.getText();
        int len = searchField.getText().length();
        index = text.indexOf(searchField.getText(),index);
        try {
            textBox.getHighlighter().removeAllHighlights();
            if(!(index<0))
            {
                textBox.getHighlighter().addHighlight(index, index+len, DefaultHighlighter.DefaultPainter);
            }else{
                index++;
                searchNextButtonActionPerformed(evt);
            }
        } catch (BadLocationException ex) {}
        index++;
    }

    private void searchPrevButtonActionPerformed(java.awt.event.ActionEvent evt) {
        String text = textBox.getText();
        String reversedQuery = new StringBuilder(searchField.getText()).reverse().toString();
        String reversedText = new StringBuilder(text).reverse().toString();
        int len = reversedQuery.length();
        index = (reversedText.length()-reversedText.indexOf(reversedQuery,(reversedText.length()-index)+1))-len;
        try {
            textBox.getHighlighter().removeAllHighlights();
            if(!(index+len>text.length()))
            {
                textBox.getHighlighter().addHighlight(index, index+len, DefaultHighlighter.DefaultPainter);
            }else{
                index++;
                searchPrevButtonActionPerformed(evt);
            }
        } catch (BadLocationException ex) {}
        index++;
    }