File Extension Search

.dex File Extension

Developer: Google
File type: Dalvik Executable File
You're here because you have a file that has a file extension ending in .dex. Files with the file extension .dex can only be launched by certain applications. It's possible that .dex files are data files rather than documents or media, which means they're not meant to be viewed at all.

what is a .dex file?

Dalvik executable files are developer files affixed with the .dex extension, and these DEX files are used to initialize and execute applications developed for the Android mobile OS. The data stored in these DEX files includes compiled code that locates and initializes other program files of the associated application required to run the program. Google developed the DEX file format, and the Android OS (also developed by Google) is a Unix-based platform for supported mobile phones. The Dalvik virtual machine is an application service implemented into the Android OS to interpret the compiled code stored in a DEX file. Developers with Microsoft Windows-based systems or Mac platforms can create Android applications with DEX files by using the Google Android SDK software. Compiled Java applications can also be translated into Android programs with associated DEX executable files. Multiple DEX files are stored in a distributable package saved in the APK format, and these APK files are the actual Android applications.

how to open a .dex file?

Launch a .dex file, or any other file on your PC, by double-clicking it. If your file associations are set up correctly, the application that's meant to open your .dex file will open it. It's possible you may need to download or purchase the correct application. It's also possible that you have the correct application on your PC, but .dex files aren't yet associated with it. In this case, when you try to open a .dex file, you can tell Windows which application is the correct one for that file. From then on, opening a  .dex file will open the correct application. Click here to fix .dex file association errors

applications that open a .dex file

Google Android SDK for Linux

Google Android SDK for Linux

Android SDK is the program that provides you the developer tools and API libraries you need to test, debug and build applications for Android. Applications for Android are written in Java programming language. Android SDK tools compile the program code along with resource files and any other data into an archive of files with APK format known as the Android package. Android SDK for Linux systems has been tested on Lucid Lynx and Ubuntu Linux. It requires GNU C Library [glic] 2.7 or later. It requires version 8.04 on Ubuntu Linux. 64-bit distributions should be able to run 32-bit applications. Some Linux distributions may support GNU Compiler for Java [gcj] or JDK 1.4. Both are not supported by development for Android. All the codes in an APK file are considered one program, and it is the file used by Android-powered devices to install the program. Once installed, every application lives on its own security sandbox. The operating system of Android is a multiuser Linux program wherein every application is considered a different user. The system assigns a unique Linux user ID to each application [unknown to the user and used by the system alone]. The system sets a permit for all files in the application so that only the corresponding user ID assigned to that application can access them. This means that an application runs independent of other applications because each application has its own VM [virtual machine]. Every program, by default, operates its own Linux process. Android begins the operation when one of the application’s components has to be executed, then stops the operation when no longer needed or when system has to recover memory for other programs. This is Android’s “principle of least privilege”. The application can only access components that will do the job needed and nothing else. This provides system security as the application cannot access components without system permit. But an application can share data with other applications and access system services through a couple of ways. Two applications can be possibly arranged to share a Linux user ID for them to access each other’s components. Applications sharing the same ID must run with the same Linux process, share the same virtual machine [VM], and have the same certificate to save system resources. Another way is for the application to request for a permit to access device data like SMS messages, contacts, SD card or mountable storage, camera, etc. The user must grant all application permits during installation time.
Google Android SDK

Google Android SDK

Android software development is the process of creating new applications for the operating system of Android. Applications are created using Java programming language. Android SDK [software development kit] includes a comprehensive set of applications such as libraries, debuggers, documentation, sample code, handset emulator based on QEMU and tutorials for Android. It works on Microsoft Windows XP and later, Mac OS X 10.5.8 or later for Mac platforms. Developers can use any text editor to edit XML and Java files, use command line tools of Apache Ant and Java Development Kit to create, debug and build applications and control devices attached to your Android such as remote installation of a software package and triggering a reboot. Applications for Android are packaged in APK file format. The APK package stores DEX files called Dalvik executables which are compilations of byte code files. Android applications are made of one or more components such as content providers, services, activities and broadcast receivers. Every component has its own role in the overall behavior of the application, and be accessed or executed individually by the application or even other applications [depending on permit availability].

a word of warning

Be careful not to rename the extension on .dex files, or any other files. This will not change the file type. Only special conversion software can change a file from one file type to another.

what is a file extension?

A file extension is the set of three or four characters at the end of a filename; in this case, .dex. File extensions tell you what type of file it is, and tell Windows what programs can open it. Windows often associates a default program to each file extension, so that when you double-click the file, the program launches automatically. When that program is no longer on your PC, you can sometimes get an error when you try to open the associated file.

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