Downloading contents of a jar file

As i told that I am working on enhancing the application, I have downloaded the jar files and I know the version of the jar files. But I wanted to know the version of the jar which the package belongs to, I hope you get it.

To explain you more, I have import x. So is it that, if you know the version of jar which they used while building the application, you would also use the same version of jar to execute the application? If that is what your requirement is, then am afraid that you will have to rebuild the application with exclusion of deprecated jars.

Because finding version number associated with a given jar is like one to one function. Only one version number for one jar file. But finding which version of jar was used at the time of development of application sounds highly impossible to me unless the developer attaches the required jars with the application. MF appears to be optional. There's no version recorded in various sqljdbc Where is it getting this version from if it's not recorded in the manifest?

Show 4 more comments. MF file, e. This answer and others is currently discussed on Meta — Thomas Weller. Just to complete the above answer.

MF path. You can examine jar's contents in any archiver that supports zip. Nick Volynkin Vadzim Vadzim If so, skip ahead to the "Click Browse " step. It's the top option in the Eclipse installer. This yellow button is near the bottom of the page.

Doing so will prompt Eclipse to begin installing onto your computer. You can first change the installation folder by clicking the folder icon to the right of the "Installation Folder" field and then selecting a specific folder on your computer. This green button is at the bottom of the installer window.

Clicking it will open Eclipse. Click Browse…. It's on the right side of the window. Select a workspace folder. Click a folder that you want to use on the left side of the screen. This is where your Eclipse project files will be stored. Click Select Folder. It's in the bottom-right corner of the window. Click Launch. You'll find this at the bottom of the window. Eclipse's main page will open. Part 2. Place all of your files in one folder. The files that you want to bundle into your JAR file all have to be in the same folder before you can continue.

Click File. In future, it should be possible to just double-click to start OpenRocket. Or, if you are not currently in the same directory as the. Note that if you install OpenRocket from a repository as in the following instructions, it will likely not work since it requires an older version of Java than is commonly distributed today.

Our next release is targeting newer versions of Java, and hopefully this will become a useful approach to installing again at that time. The metadata in the JAR file, such as the entry names, comments, and contents of the manifest, must be encoded in UTF8. Therefore, even if the contents of the JAR file do not change, when you create a JAR file multiple times, the resulting files are not exactly identical. You should be aware of this when you are using JAR files in a build environment.

It is recommended that you use versioning information in the manifest file, rather than creation time, to control versions of a JAR file. See the Setting Package Version Information section. Let us look at an example.

A simple TicTacToe applet. You have a choice of JOGL versions to download. The latest stable version is the safest, but lags behind in features. The latest automatic build contains all checked-in code, but may be failing some tests. Go to this page and download the all-in-one 7z archive file:. After inflating the file with 7zip , you will have the general directory structure:.

Now you can test the archive as described in runtime version check and runtime debug test.