The File Extensions Database

.APPLET File Extension

  • Developer by: Eclipse
  • Category: Developer Files
  • Format: Text

What is an .APPLET file?

.APPLET is Eclipse Java Applet Policy File

Developer file created by Eclipse, a software development application; generated by Eclipse automatically when creating a new applet project and saved to the project root folder as the file; contains security permissions for the applet.

By default, the file contains the following property, which allows all permissions for the applet codebase:

grant {

This permission is generally suitable for local development on the developer's machine. However, it may not be suitable for deploying the applet to a production environment, since the applet's permissions may need to be restricted.

Common APPLET Filenames - A file automatically generated in Eclipse applet development projects containing the security permissions for the applet.

Programs that open Eclipse Java Applet Policy File

How to solve problems with APPLET files

  • Associate the APPLET file extension with the correct application. On :
    Windows: Right click on any APPLET file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.APPLET files". Mac: Right click (or Ctrl-click) the APPLET file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .APPLET is Eclipse Java Applet Policy File. Because only the current version supports the latest APPLET file format. Search, therefore, e.g. on the Eclipse manufacturer website after an available .APPLET is Eclipse Java Applet Policy File update.
  • To make sure that your APPLET file is not corrupted or virus-infected, get the file again and scan it with antivirus software.