The original extension of a HTML page was .htm because of file name restrictions that limited filetype extensions to 3 characters, today you can use 3 or 4 so either .html or .htm is perfectly fine.
.txt is a common choice.
ASMX file is a webservice file. It stands for 'Active Server Methods Extension'.
just add an extension .java when you save your notepad text file
The extension is actually immaterial. It merely serves to give the operating system a hint as to the file's content, allowing the file to be associated with a particular application, such as a GIF file viewer or an image editor application. In order to save a GIF file, you must first re-encode the image (assuming it is not already in GIF format), and save the output to a file with a GIF extension.
What is the file extension What is the file extension
For most typical Word documents the extension is .docFor Excel workbooks (spreadsheets) the extension is .xlsIn general the file extension is the 3 letter/number "code" after the period in the complete file name that gives a hint as to what type of file it is. For example, in the file name resume.docthe word resume is the file's actual name and the .doc tells you that it is a document file.
file extension for video is 101
.html, .php, or .htm
The file extension tells about the type of file, with the extension three letters. For Eg:- *.txt -- text file *.exe-- executable file
file extension
The file extension is ".pages"
the extension of a batch file is ".bat"
The file extension of iPhone firmware file is .ipsw .
The extension .jpeg tells us the file is an image file
The main project file has a VBPROJ extension. This is also a file with the same name as the main project file, but with an SLN extension. The SLN extension is a solution file.
* The file extension of a Word document is .doc * The file extension of an Excel speadsheet is .xls