How to generate java project into jar file

1. Java project generates jar package

(1), right-click on "Project"->"Export..." to export, and the "Export Settings" window will pop up As follows:

(2), select the file to be packaged, as shown below:

(3), settings The exported prompt information is as shown below:

(4). Specify the program entrance, as shown in the picture:

( 5). View the results, as shown in the figure:

2. Through the jar command.

Usage: jar {ctxu}[vfm0Mi] [jar-file] [manifest-file] [-C directory] filename...

Options:

- c Create a new archive

-t List the contents of the archive

-x Expand the named (or all) files in the archive

-u Update already exists Archive

-v Generate verbose output to standard output

-f Specify archive file name

-m Contain tag information from tag file

-0 Storage mode only; ZIP compression format is not used

-M Do not generate a manifest file of all items

-i Generate index information for the specified jar file

-C Change to the specified directory and include the following files:

If a file name is a directory, it will be processed recursively.

Both the manifest file name and the archive file name Need to be specified in the same order specified by the 'm' and 'f' flags.

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