The other day I was trying to view the contents of a jar file by entering this on the command line:
jar tf jarfilename.jar
I got the following error:
'jar' is not recognized as an internal or external command, operable program or batch file
To fix this error:
Make sure a JAVA_HOME environment variable is set to the location of your Java installation, such as C:\Program Files(x86)\Java\jdk1.8.0_25
Then add the following to the PATH environment variable to include the Java installation's bin directory: %JAVA_HOME%\bin
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