DO File Extension

What is DO file?

Files with the DO extension are programs written in Java language. They are initiated with Serylet Java in a web container environment, such as IBM WebSpere, or Apache Tomcat, or in external environment of application’s server, such as for example GlassFish.

The basic function of DO files is generating, using a Java platform, dynamic WWW pages – internet applications. In fact, DO files operate similarly like PHP files. Data contained within a file is processed on a server, and the result is send to the user’s web browser.

Programs which support DO file extension

The following list contains programs grouped by 3 operating systems that support DO files. Files with DO suffix can be copied to any mobile device or system platform, but it may not be possible to open them properly on target system.

Updated: 08/11/2019

How to open file with DO extension?

There can be multiple causes why you have problems with opening DO files on given system. On the bright side, the most encountered issues pertaining to Java Servlet files aren’t complex. In most cases they can be addressed swiftly and effectively without assistance from a specialist. We have prepared a listing of which will help you resolve your problems with DO files.

Step 1. Get the Apache Tomcat

Problems with opening and working with DO files are most probably having to do with no proper software compatible with DO files being present on your machine. The most obvious solution is to download and install Apache Tomcat or one to the listed programs: Opera, Mozilla Firefox, Microsoft Internet Explorer. Above you will find a complete listing of programs that support DO files, classified according to system platforms for which they are available. If you want to download Apache Tomcat installer in the most secured manner, we suggest you visit Apache Software Foundation website and download from their official repositories.

Step 2. Update Apache Tomcat to the latest version

If you already have Apache Tomcat installed on your systems and DO files are still not opened properly, check if you have the latest version of the software. Sometimes software developers introduce new formats in place of that already supports along with newer versions of their applications. If you have an older version of Apache Tomcat installed, it may not support DO format. The most recent version of Apache Tomcat is backward compatible and can handle file formats supported by older versions of the software.

Step 3. Associate Java Servlet files with Apache Tomcat

If the issue has not been solved in the previous step, you should associate DO files with latest version of Apache Tomcat you have installed on your device. The next step should pose no problems. The procedure is straightforward and largely system-independent

Change the default application in Windows

• Right-click the DO file and choose Open with option
• Next, select the Choose another app option and then using More apps open the list of available applications
• To finalize the process, select Look for another app on this PC entry and using the file explorer select the Apache Tomcat installation folder. Confirm by checking Always use this app to open DO files box and clicking OK button.

Change the default application in Mac OS

• By clicking right mouse button on the selected DO file open the file menu and choose Information
• Proceed to the Open with section. If its closed, click the title to access available options
• From the list choose the appropriate program and confirm by clicking Change for all....
• If you followed the previous steps a message should appear: This change will be applied to all files with DO extension. Next, click the Continue button to finalize the process.

Step 4. Ensure that the DO file is complete and free of errors

If you followed the instructions form the previous steps yet the issue is still not solved, you should verify the DO file in question. It is probable that the file is corrupted and thus cannot be accessed.

1. The DO may be infected with malware – make sure to scan it with an antivirus tool.

Should it happed that the DO is infected with a virus, this may be that cause that prevents you from accessing it. It is advised to scan the system for viruses and malware as soon as possible or use an online antivirus scanner. If the scanner detected that the DO file is unsafe, proceed as instructed by the antivirus program to neutralize the threat.

2. Check whether the file is corrupted or damaged

If the DO file was sent to you by someone else, ask this person to resend the file to you. During the copy process of the file errors may occurred rendering the file incomplete or corrupted. This could be the source of encountered problems with the file. When downloading the file with DO extension from the internet an error may occurred resulting in incomplete file. Try downloading the file again.

3. Check if the user that you are logged as has administrative privileges.

Some files require elevated access rights to open them. Switch to an account that has required privileges and try opening the Java Servlet file again.

4. Check whether your system can handle Apache Tomcat

If the system is under havy load, it may not be able to handle the program that you use to open files with DO extension. In this case close the other applications.

5. Check if you have the latest updates to the operating system and drivers

Regularly updated system, drivers, and programs keep your computer secure. This may also prevent problems with Java Servlet files. Outdated drivers or software may have caused the inability to use a peripheral device needed to handle DO files.

Do you want to help?

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