How do I Open a DO File online in Windows and MAC with a free .do opener

  • File type: Java Servlet
  • Developer: Java
  • Category: Web Files
  • File format: Open-Source
  • Extension: .do



What is a DO file

The DO file extension is a Java Servlet. It is a Web-based Java application executed by a Web server like the IBM WebSphere.

This format is usually mapped to the Struts controller. And it is utilized for the generation of dynamic Web contents.

  • A servlet is a language class of Java for extending the functionalities of servers hosting programs. It is accessible through a request-response infrastructure model.
  • This API supported by .do files provides with the ability of creating dynamic Web pages on a server running on the Java platform.
  • Normally, the dynamic contents are based on the HTML scripting language but can also be from other models like the XML.
  • Servlets are widely considered as the counterparts of the dynamic contents generated by the ASP.NET, CGI, and PHP technologies.
  • The functionality of this do extension supports the maintenance of state across various server transactions via HTTP cookies, URL rewriting, or session variables.

How to Open DO Files



  1. Locate your files
  2. Double click on it
  3. A open with dropdown menu will appear.
  4. Select an installed program to view them.
  5. If you don’t have any program installed you will have to download and install a software. Check the next section.


These are the programs that you can use to view these do files. The web browser can be used to view a do.

Open With Windows: Requires a Web server that supports JSP to run, may be viewed in a Web browser:

  • Google Chrome
  • Internet explorer
  • Mozilla Firefox
  • Opera
  • Safari
  • Apache Tomcat
  • Any other web browser
apache tomcat
Open With Linux: JSP-supported Web browser, may be viewed in a Web browser:
  • Google Chrome
  • Internet explorer
  • Mozilla Firefox
  • Opera
  • Safari
The Java package containing the servlet API identifies the interactions that can occur between the servlet and the Web container.
Basically, the Web container is a component of the Web server. It is the responsible for the management of the lifecycle attributed to the servlets.
It also maps a URL to a specific servlet and makes sure that that URL requester has the appropriate access privileges to communicate with its target.
Servlets supported by the DO file format can be generated by the JSP (JavaServer Pages) compiler. Also by template engines like the WebMacro.
Servlets executed in combination with the JSP are referred to as Model 2 patterns.
They are a variant of the model-view-controller outline.
The lifecycle of this do format in relation to the servlet consists mainly of its loading at startup by the container using the init() method.
Upon completion of the initialization, it begins servicing the client requests using the service() method.
The destroy() method is executed in the final stage to end the servlet service.

Programs that open .do files

oracle application server

  • 4oD player
  • DigitalOutrage Hosting Control
  • MicroSim PCBoard File With Autorouting Control Information
  • Modelsim
  • Stata Batch Analysis File