"jar -cvfm" to Create a JAR with a Manifest File


What is the "jar" command to create a JAR file with my own manifest file?

✍: FYIcenter.com


To create a JAR file with a folder and your own manifest file, you can use the "jar -cvfm jarname manifestfile foldername" command.

For example, the following session creates a new JAR file with all files in a sub folder and a manifest file:

\fyicenter>"%java_home%\bin\jar" -xvf jms.jar

\fyicenter>"%java_home%\bin\jar" -cvfm myJar.jar 
added manifest
adding: javax/(in = 0) (out= 0)(stored 0%)
adding: javax/jms/(in = 0) (out= 0)(stored 0%)
adding: javax/jms/BytesMessage.class(in = 1202) (out= 494)(deflated 58%)
adding: javax/jms/Connection.class(in = 945) (out= 373)(deflated 60%)
adding: javax/jms/ConnectionConsumer.class(in = 275) (out= 189)(deflated 31%)
adding: javax/jms/ConnectionFactory.class(in = 311) (out= 179)(deflated 42%)
adding: javax/jms/ConnectionMetaData.class(in = 544) (out= 271)(deflated 50%)
adding: javax/jms/DeliveryMode.class(in = 207) (out= 160)(deflated 22%)

\fyicenter>del META-INF\MANIFEST.MF

\fyicenter>"%java_home%\bin\jar" -xvf myJar.jar META-INF\MANIFEST.MF

\fyicenter>type META-INF\MANIFEST.MF
Manifest-Version: 1.0
Ant-Version: Apache Ant 1.5.3
Created-By: 1.3.0-C (Sun Microsystems Inc.)

The output proves that we haved included the orginal MANIFEST.MF in the myJar.jar correctly. Now myJar.jar is perfect copy of jms.jar.

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2015-11-09, 1501👍, 0💬