MyJarExplorer

As its name implies, MyJarExplorer is a lightweight and easy to use application that you can use to view and edit the contents of JAR files located on your computer.
The program does not provide users with a standard interface, but once installed on your system, it adds a new item in the context menu of each JAR file, enabling you to edit it easily. Simply double click on any JAR to explore its contents.
The Explorer window provides a number of views for JAR resources. Thus, you can explore the file manifest (displays the version, author and main class) and view information about all the classes, methods and fields.
The entry data is editable, so you just have to make the desired modifications and press the 'Save' button. Once you do so, the class-path and the main class attributes of the manifest file are automatically updated.
The case-sensitive search tool is designed to help you easily navigate between classes, but you can also search for a certain string in a class definition.
In addition, the application allows you to run executable JARs, create new manifests and manage dependencies, which means that it can store a list of files that are required for opening the current JAR Moving and renaming the JAR file is also possible and you are advised to use these options, as MyJarExplorer can keep track of the dependencies, while moving the file manually might make it nonfunctional.
Since it is created using the Java programming language, the application can be installed on any platform: Windows, MAC OSX or Linux.
MyJarExplorer is designed to provide you with a simple solution for exploring and editing JAR files. It can prove to be a handy tool for any Java developer out there.