Tips to open DO file

Can't open the DO file? You are not the only one. Thousands of users face similar problems every day. Below you will find tips on how to open DO files as well as a list of programs that support DO files.

DO file extension

File Name Java Servlet
File Category Web Files

The DO file is supported on 3 operating systems. Depending on your operating system, you may need different software to handle the DO files. Below is a summary of the number of programs that support and open the DO file on each system platform.

Operating systems
  • 6
  • 2
  • 1
  • 0
  • 0
  • 0

What is DO file?

The .DO file is a server file. It contains a program written in Java and it must be placed on an application server with a Java virtual machine installed. The program contained in the file is executed on the server side. The user requesting this resource receives only the finished file generated by the program. These programs are called servlets in this technology and are usually used to generate dynamic web pages. The end user does not need to have a runtime environment or a virtual machine.

How to open DO file?

The most common problem when using Java Servlet is that a specific DO is not associated with the program. Thus, when you open DO, the program selection wizard or some other program starts. How to solve such a problem?

The first thing you should do is just "doubleclick" on the DO file icon you want to open. If the operating system has an appropriate application to support it and there is also an association between the file and the program, the file should be opened.

Step 1. Install Apache Tomcat

An often overlooked issue is to make sure that Apache Tomcat is installed on the computer. To do this, enter the name Apache Tomcat into the system search engine. If we do not have this program, it is worth installing it, as it will help you automatically associate the file DO with Apache Tomcat. Below you will find a list of applications that support DO files.

Step 2. Create association of Apache Tomcat with DO files

If the application is or has been freshly installed, but the DO file still does not use the Apache Tomcat program, it means no association. It is most convenient to call the context menu with the right mouse button and select Properties. The displayed window will contain information about the program that supports this type of file. Changes can be made using the "Change" button. If there is no software on the list, simply select "Browse" and manually select the directory where the application is installed. However, it is important to check the "Always use the selected program ..." box, this will allow you to permanently associate the DO file with the Apache Tomcat application.

Step 3. Update Apache Tomcat to the latest version

If, despite the association of the Apache Tomcat program with the Java Servlet file, the file still does not open, check the program version and possibly update it to the newest version. Some applications allow you to update from the program level, and for others you need to download the installer from the Apache Software Foundation page and install.

Step 4. Check for the following problems with the DO file

Of course, it may happen that despite the above steps, the file still does not work. This could be due to the file itself, the cleanest issues are:

The DO file may be unusually small compared to the original file. Usually this applies to DO files downloaded from the Internet in case the download did not finish properly. The file should be downloaded again, making sure that the process has finished correctly.
The most common cause here is computer viruses. A virus scan using an up-to-date antivirus program should fix the problem. If this is not possible, you can use the online scanner. The scan should cover the entire computer, not only the DO file that we want to open. As a result of the scan, sometimes it is not possible to recover DO files, which are deleted if there is a backup of this file, then after restoring it, it must also be scanned.
A typical compatibility error - the program does not support the older version of the DO file. On their websites, developers usually offer free solutions to such problems, e.g. in the form of a conversion program or an older version of the program.
There can be many reasons for this. The repair method must be adapted to the type of file and damage. Some programs offer the ability to automatically repair DO file corruption. The easiest way to restore the file is from a backup or by contacting N/A, but this one can be expensive. Not all damage can be reversed.
The program indicates that the file is encrypted or corrupted. The encrypted file DO except for the special designation, works normally, but only on the device where it was encrypted, before transferring it to another machine, decryption is required.
Some of the system directories are excluded from modification. While there is usually no problem reading such a file, it may not be possible to save it. If possible, you can try to move the DO file to another location.
This problem only occurs with more complex files. Some file types can only be opened in one program at a time. Closing other programs should help. Sometimes you have to wait for the session to the file DO to close. Some anti-virus or backup software may occupy the DO file for a certain period of time. If the problem persists, restart the machine.