procedure TForm1.FormCreate(Sender: TObject);

var

  n: TDateTime;

  i64: Int64;

  s: Integer;

begin  Memo1.Clear; Memo1.ReadOnly := True;

  n := StrToDateTime('2014-05-02 10:37:35');

  Memo1.Lines.Add( IntToStr( DateTimeToUnix(N) -  ))  ;//

  Memo1.Lines.Add( IntToStr( DelphiToJavaDateTime(N )));    //

  Memo1.Lines.Add( DateTimeToStr(  JavaToDelphiDateTime(DelphiToJavaDateTime(N ))));  //2014-05-02 10:37:35

  with TRegistry.Create(KEY_WOW64_64KEY or KEY_ALL_ACCESS) do

  try

    RootKey := HKEY_LOCAL_MACHINE;

    if OpenKey('SOFTWARE\Microsoft\Windows NT\CurrentVersion', False) then

    begin

      Memo1.Lines.Add(IntToStr(ReadInteger('InstallDate')));//

      Memo1.Lines.Add(DateTimeToStr(UnixToDateTime(ReadInteger('InstallDate') + ))); //2014-05-02 10:37:35

      i64 := ReadInteger('InstallDate'); //这里 必须先这样转为64位，不能直接 * 1000，直接的话，按integer类型计算，结果超过MaxInt了。

      i64 := i64 * ;

      Memo1.Lines.Add(DateTimeToStr(JavaToDelphiDateTime(i64))); //2014-05-02 10:37:35

    end;

  finally

    Free

  end;

end;