Java: Operating System Environment

class EnvOperatingSystem {
    public static void main(String args[]) {
        try {
            System.out.println( "os.name:    " + System.getProperty( "os.name"    ) );
            System.out.println( "os.version: " + System.getProperty( "os.version" ) );
            System.out.println( "os.arch:    " + System.getProperty( "os.arch"    ) );
        }
        catch (Exception err) {
            err.printStackTrace();
        }
    }
}