APPLET File Extension
Eclipse Java Applet Policy Format
- File Type applet
- Developer Eclipse
- Popularity
- Application Eclipse IDE
- Category Developer Files
- Format Text
What is a APPLET file?
Eclipse Java Applet Policy Format, identified by the APPLET extension, is a Developer Files type and includes 1166 files.
With the creation of the Eclipse Java Applet Policy Format (APPLET), Eclipse introduced file format along with 3 programs built for their use.
APPLET files are supported by Windows, Mac OS and Linux. You can create a APPLET file using one of 2 programs, for example Eclipse IDE and Eclipse.
Programs that support APPLET files
How to open a APPLET file?
The most common reason why a APPLET file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
The most popular programs for working with APPLET files are Eclipse IDE and Eclipse. To get the latest version of Eclipse IDE, open the Eclipse website where a universal installer for all operating systems is available.
Once setup is done, your operating system should assign Eclipse IDE as the default app for APPLET files.
Make Eclipse IDE the default APPLET viewer
Changing the default program in Windows
- Start by right-clicking on your APPLET file and selecting the "Open With" option. From there, click "Choose another app" to continue;
- Inside the popup window, scroll through the list of applications and specifically choose Eclipse IDE as the application to associate with your APPLET file;
- Check the "Always use this app" checkbox and click "OK".
Change the default app to open files on Mac
- Right click or use Control + Left Click on the desired APPLET file to access a dropdown menu of actions;
- Select "Open in application" and click "Other";
- Scroll down to the bottom of the window, where you will find the "Enable" menu. Default, "Recommended Programs" will be selected;
- In this menu, choose "All Programs" and navigate to Eclipse IDE. Check the box next to "Always open in app" to make it the default program.
How to edit a APPLET file?
To edit APPLET files, you need to install specialized software that allows you not only to open but also to modify developer files. Online APPLET editors usually provide fewer features than software created specifically for Eclipse Java Applet Policy Format.
List of Top APPLET editors 2026
Following these criteria, we have put together a list of recommended APPLET editors.
| APPLET Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| Eclipse IDE | Eclipse | Windows | 4.4 out of 5 (40 reviews) |
Finding answers to APPLET file problems
If you encounter issues with APPLET files, don’t worry—most can be fixed with minor software adjustments. Refer to the troubleshooting tips below.
What are the signs that my APPLET file is damaged?
Corrupted APPLET developer files may have one or more of the following symptoms:
- Poor performance when editing a file in Eclipse IDE;
- Opening or processing the file in Eclipse IDE or other programs causes instability or crashes in the program;
- The file shows errors when trying to open it or does not open completely;
- Unexpected expansion of the total size of the APPLET file;
- Working with the file triggers the display of error messages;
Why does Eclipse IDE quit or crash unexpectedly?
Eclipse IDE crashes can be attributed to outdated software. Make sure you have installed the latest updates for Eclipse products.
A computer restart is often the key to solving numerous common problems. That’s why, it is recommended to restart the computer before making any changes to the software settings.
What methods can be used to repair a damaged APPLET file?
Use a recovery program to open the damaged APPLET file and navigate to the "Repair" menu item. Wait for the recovery process to finish, as it will automatically repair damaged developer files.