Java Archive Format
If you want to edit JAR file and not damage it, you should install dedicated software Of course, there are probably JAR Online Editors available, but none of them will be able to provide such a wide range of available options as dedicated software.
The installation of the program that supports the JAR file does not guarantee that the file can be edited. Click here for more information on JAR file extension
Definitely the best solution. Choose one of the programs that support the JAR file extension, open your file and check the editing options. It's safest to download the software from the developer's website. Links to the websites of software producers can be found on the software subpages. Examples of programs cooperating with JAR files, which make it possible to edit it.
All available programs supporting the JAR file
Some file formats are just plain text files that you can open with Notepad. But beware - making manual changes to the JAR file or another may result in its damage. After saving the changes, it may not be possible to reopen the JAR file. It is safest to use software that was created to edit files in the JAR format.
It seems that one of the software on the list must be able to edit the JAR files. Use other options if you still haven't found a way to edit JAR. Below we found websites that help in editing JAR files.
Free Online File Edit Service
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