Compiling java with dos format how to#
Compiling java with dos format archive#
Compiling java with dos format code#
Compiling java with dos format zip#

Compiling java with dos format archive#

I often only need to view or work with one or two files of the archive file. Note that the original JAR file is left intact, but its contents are all now available directly as well. The next screen snapshot demonstrates using jar xvf Mењњlasses.jarВ to extract all the contents of that JAR file. This is done using jarВ ' x' (for extract) option. It is sometimes desirable to extract one or many of the filesВ contained in an archive file to work on or view the contents of these individual files. The next screen snapshot demonstrates running jar tvf Mењњlasses.jarВ to view the contents of my generated JAR file. I typically use the options ' t' (list contents of archive), ' v' (verbose), and ' f' (filename specified on command line) for this. Listing (or viewing) the contentsВ of a JAR, WAR, or EAR file is probably the function I perform most with the jarВ command. This is demonstrated in the next screen snapshot. If I don't want to explicitly change my current directory to the most appropriate directory from which to build the JAR before running jar, I can use the -CВ option to instruct jarВ to implicitly do this as part of its creation process. This process is demonstrated in the next screen snapshot. and all files in the current directory and all subdirectories and files in subdirectories will be included in the created JAR file.

I have changed my current directory to the 'classes' directory so that creating the JAR is as simple as running jar cvf *В or jar cvf. The next screen snapshot demonstrates the simplest use of jar cvf. In the case of creating a JAR file, the options 'cvf' will create JAR file ( c) with specified name ( f) and print out verbose output ( v) regarding this creation. I like to use the ' v' (verbose) and ' f' (filename) options with all jarВ commands that I run so that the output will be verbose (to help see that something is happening and that it's the correct thing that's happening) and so that the applicable JAR/WAR/EAR filename can be provided as part of the command rather than input or output depending on standard input and standard output. The ' c' option provided to the jarВ command instructs it to create an archive. classВ files have been compiled and are ready to be included in a JAR. Preparing the files to be used in theВ jar examples I have shown compiling these without an IDEВ to be consistent with using command-line tools in this post.

The actual source of these files is insignificant to this discussion and is not shown here.

Compiling java with dos format code#

The next screen snapshot demonstrates compiling some Java source code files (.

It's also worth keeping in mind that the jarВ options tend to mirror tar's options.ДЇor my examples, I want to jar up and work with some.

Compiling java with dos format zip#

It's also worth keeping in mind that the JAR formatВ is based on the ZIP format and so the numerous tools available for working with ZIP files can be applied to JAR, WAR, and EAR files. JAR files will be used primarily in this post, but the commands I demonstrate on. In this post, I look at use of the jar commandВ to create, view, and manipulate Java archive files. This is particularly true when I have to do something repeatedly or when I am doing it as part of a script.

Compiling java with dos format how to#

Learn how to do basic CRUD operations on JAR, WAR, and EAR files using the command line.ДЄlthough Java IDEs and numerous graphical tools make it easier than ever to view and manipulate the contents of Java archive (JAR, WAR, and EAR) files, there are times when I prefer to use the command-line jar commandВ to accomplish these tasks.