public static void findBack(JTextArea TextArea, String searchText) {
    jTextArea = TextArea;
    text = searchText;

    try
    {
        if (endIndex == 0) endIndex = jTextArea.getText().length();
        int select_end = jTextArea.getText().toLowerCase().indexOf(text.toLowerCase(), endIndex);
        int select_start = select_end > text.length() ? select_end - text.length() : jTextArea.getText().length();
        jTextArea.select(select_start, select_end);
        endIndex = select_end;

        if(select_end == jTextArea.getText().toLowerCase().lastIndexOf(text.toLowerCase()))
        {
            endIndex = text.length();
        }
    }
    catch(NullPointerException e)
    {}
}