[Code]
function InitializeSetup(): boolean;
var
  ResultCode: integer;
begin
  if Exec('java', '-version', '', SW_SHOW, ewWaitUntilTerminated, ResultCode) then begin
    Result := true;
  end
  else begin
    if MsgBox('This tool requires Java Runtime Environment to run. Please download and install the JRE and run this setup again. Do you want to download it now?', mbConfirmation, MB_YESNO) = idYes then begin
      Result := false;
      ShellExec('open', 'https://java.com/download/', '', '', SW_SHOWNORMAL, ewNoWait, ResultCode);
    end;
  end;
end;