Open JAR files in Windows, but how?
You can open , change and edit "JAR files" in Windows 11, 10, ... amd MS Server OS without additional software .
Open JAR files with no ifs or buts!
This simple and short example can be used as a general Windows solution for all Windows and server systems, because the zip folder function is also available from Windows 2000 onwards. However, if you don't like handling the JAR files with the Microsoft solution, you can also use the free 7-Zip
Yes, don't just open it, but change the content and edit it like a simple folder!
1.) Easily open the JAR file without additional software!
A "JAR file" is nothing more than a simple "zip archive" or "zip file".
The name was introduced a long time ago in order to recognize the JAVA apps (Java-Archive) on the hard drive faster and better!
JAR = Java archive
If you rename the xxx.jar to xxx.jar.zip , it will be treated like a zip folder under Windows.
Or you can simply change the Windows file assignment under Windows:
►►► In Windows 10 / 11, the files are opened with the wrong program!
See also: ►► Show file name extension in Windows 10, is that possible?
| (Image-1) Easy open JAR files in Windows 11, 10, ... and MS Server OS!
Opening the Jar files works under: Windows 11, 10 , 8.1, 8, 7: Pro, Home, Enterprise, Basic, Premium, Professional, Starter, Ultimate, Windows-Server 2019, 2016, 2012 and is possible without additional software.
2.) Permanently register the JAR file as a folder in the file explorer!
If you want, you can also register the JAR file as a Windows folder through a simple registry entry in Windows! I have already prepared the script for download here.
Simply download and start the script as admin (right mouse button), then the JAR file appears as a folder in the file explorer ( ... see Image-1 ) and can be treated as a folder as normal
| (Image-2) Open JAR files permanently as Windows folder!
3.) Why don't the JAR files end with ZIP?
JAR files (Java ARchive) are actually ZIP archives created specifically for use in Java applications. Although they use essentially the same file format as ZIP archives, they use the “.jar” file extension to indicate that they are intended for use in Java programs. There are several reasons why JAR files do not use the .zip extension:
Convention: Using the .jar extension is a convention to distinguish JAR files from traditional ZIP archives. This makes it easier for developers and users to identify JAR files from other archive files.
Functional Differences: Although JAR files are basically ZIP archives, they have some additional features that are useful in Java applications, such as the ability to store and organize classes and resources for Java applications. Using the .jar extension ensures that Java runtime environments (such as the Java Virtual Machine) can properly process JAR files and correctly load the included classes and resources.
Detection by development tools: Java development environments and tools can easily detect and support JAR files. The “.jar” extension signals to these tools that they are special files for Java.
Overall, using the .jar extension helps in uniquely identifying and using JAR files in the Java development environment. However, it is important to note that the contents of JAR files are still in ZIP format and can be opened and edited using ZIP archiving tools.
FAQ 66: Updated on: 5 November 2023 19:22
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