![how to change file extension how to change file extension](https://cdn1.getcooltricks.com/wp-content/uploads/2016/11/Changing-File-Extension-GetCoolTricks-3.png)
*Change the extension name of the file recursively just create if it doesn't exist, then call the same code just onceĪrgs = args.substring(0, extIndex) + targetExtension The way to change the file extension in both Windows and Linux is to rename a file providing the new extension. In this example, we change a ‘text’ file to a ‘python’ file. Now change the file’s extension to the extension of the type which you want to change into. Now navigate to the file for which you want to change the file format. Hover over the Show option, and click File name extensions. Enabling File Extensions Windows Explorer. Click the View option on top of the search bar. Open the File Explorer by pressing the Windows key + E. In Linux, such commands are available via a terminal window. Luckily, even though it’s kind of annoying, showing the file extension on Windows 11 is very easy to do. Be advised that changing file extensions often results in the original file being rendered useless. Click Add Rule and then go for the green Rename button at the far end of the screen. Now type in the new extension of your choice in the Name textbox. no sense in coding the same thing twice Windows operating systems have the MS-DOS command prompt that allows you to manipulatecopy, delete and renamefiles. Click that drop-down menu and select Extension.
#How to change file extension full
Secondly, what if there are multiple dots in the full filename? lastIndexOf will solve that.Īnd what if the filename contains the extension twice? String ext =args.substring(args.indexOf(".")) įirst of all, what if there is no extension? indexOf will return -1, which will cause an IndexOutOfBoundsException.