It is a batch command file.
It is a batch command file.
Folders have no extension.
Extension
At the end of the file name. In Windows it's hidden by default.
If you want to compile a java program the name of that source code must end with extension .java
The letters at the end of a file name are called the file extension. They typically indicate the file type and help the operating system determine which program should open the file. For example, a file named "document.txt" has a ".txt" extension, signifying that it is a text file. File extensions can also include formats like ".jpg" for images or ".pdf" for documents.
You must be joking right? Do you remember something like File extension?
No, you do not have to type the file extension if you want to include the file name. You only use file extension to make the specific file be able to be run by the program. Example: I want to make my file into a java program so i can use with a specific type of program which only runs java file i put .jav at the end of the title to make it from a text file to a java file.
The File name is the name you want to give the file. The Save As Type allows you specify different formats that you can save the file in. You may be saving the file so that it can be opened with other applications. You may be saving it, but not with the particular extension that is standard for it, but with your on. For a web page saved in a text editor you would use .htm or .html for the extension, and use the *.* for the Save As Type to ensure it doesn't add a .txt extension onto the end of the filename.
Rename it with the proper extension. BAK files are created by some programs as back up versions of databases or documents in case something happens to the current version. If you sort by name in a directory, you'll find the .bak file right next to a file with the same name, only with a .doc or .ftm or some other extension. Give the file a 1 at the end of the name (Don't want to over write the current file) and change the extension and you'll be able to see what it is.
The part of a file name that determines which program to use for opening it is called the "file extension." It typically consists of a period followed by a few letters, such as ".txt" for text files or ".jpg" for image files. The operating system uses this extension to associate the file with the appropriate application.
The three letter extension at the end of every file name is for windows to identify the file format. Some Common file extensions are: .BAT -DOS batch file, .BMP - a bitmap picture image, .DOC -Microsoft Word word processor file format, .EXE -Executable file, .GIF - Graphic Image Format file, .HTM or .HTML, .JPG - Joint Producers and Engineers of Graphics file format, .PDF -Portable Document Format.