Extracting jar to specified directory

Question

I wanted to extract one of my jars to specified directory using jar command line utility   If I understand this right -C option should to the trick but when I try   jar xvf myJar jar -C   directoryToExtractTo   I am getting usage information from my jar utility  so I am doing something wrong   Is the thing I want achievable with jar or do I need to manually move my jar and there invoke   jar xvf myJar jar

User · Answer

This worked for me   I created a folder then changed into the folder using CD option from command prompt   Then executed the jar from there   d  LS afterchange gt jar xvf    mywar war

User · Answer

There is no such option available in jar command itself  Look into the documentation      -C  dir Temporarily changes directories  cd dir  during execution of the jar command while processing the following inputfiles argument    Its operation is intended to be similar to the -C option of the UNIX   tar utility  For example  jar uf foo jar -C classes bar class changes   to the classes directory and add the bar class from that directory to   foo jar  The following command  jar uf foo jar -C classes   -C bin   xyz class changes to the classes directory and adds to foo jar all   files within the classes directory  without creating a classes   directory in the jar file   then changes back to the original   directory before changing to the bin directory to add xyz class to   foo jar  If classes holds files bar1 and bar2  then here s what the   jar file contains using jar tf foo jar  META-INF       META-INF MANIFEST MF      bar1      bar2      xyz class

User · Answer

In case you don t want to change your current working directory  it might be easier to run extract command in a subshell like this   mkdir -p   path to target-dir   cd   path to target-dir   amp  amp  exec jar -xf   path to your war-file war     You can then execute this script from any working directory     Thanks to David Schmitt for the subshell trick

User · Answer

This is what I ended up using inside my  bat file  Windows only of course   set CURRENT DIR  cd  mkdir   directoryToExtractTo cd   directoryToExtractTo jar xvf  CURRENT DIR  myJar jar cd  CURRENT DIR

User · Answer

Current working version as of Oct 2020  updated to use maven-antrun-plugin 3 0 0           lt plugin gt               lt groupId gt org apache maven plugins lt  groupId gt               lt artifactId gt maven-antrun-plugin lt  artifactId gt               lt version gt 3 0 0 lt  version gt               lt executions gt                   lt execution gt                       lt id gt prepare lt  id gt                       lt phase gt package lt  phase gt                       lt configuration gt                           lt target gt                               lt unzip src  quot target shaded-jar shade-test jar quot                                     dest  quot target unpacked-shade  quot   gt                           lt  target gt                       lt  configuration gt                       lt goals gt                           lt goal gt run lt  goal gt                       lt  goals gt                   lt  execution gt               lt  executions gt           lt  plugin gt

User · Answer

jars use zip compression so you can use any unzip utility    Example     unzip myJar jar -d   directoryToExtractTo

User · Answer

It s better to do this   Navigate to the folder structure you require  Use the command   jar -xvf   Path to ur Jar file

[java] Extracting jar to specified directory

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