code:
public class WordVersion {
    private static final String WORD_PROGID = "Word.Application";
    String version;

    public WordVersion() {
        ComThread.InitSTA();
        ActiveXComponent word = null;
        try {
            word = new ActiveXComponent( WORD_PROGID );
            version = word.getPropertyAsString( "Version" );
        } finally {
            try {
                if ( word != null ) {
                    word.invoke( "Quit", new Variant[] {} );
                }
            } catch( Throwable t ) {}
            ComThread.Release();
        }
    }

    public String getVersion() {
        return version;
    }

    public static void main(String[] args) {
        System.out.println( new WordVersion().getVersion() );
    }
}