public static boolean testLibrary() {
    try {
        @SuppressWarnings("unused")
        Class<?> cl = Class.forName("net.sf.dynamicreports.jasper.builder.JasperReportBuilder");
        BasicConfigurator.configure();
    } catch (ClassNotFoundException e1) { e1.printStackTrace(); Window.write("dynamicreports library not found"); Window.write(e1.getMessage()); return false; }

    Window.write("library is installed.");
    System.out.println("dynamicreports library is found.");
    return true;
}