The first one doesn't work because the Eclipse utility class attempts to read the Manifest file, read the JAR files packaged in the JAR file and add them to the classspath of my Postfix calculator.
#Run java jar file command line mac code#
The second one works because all the dependencies have been unjarred and copied to the new JAR file and hence it has the same effect as that of having the entire Log4j source code in your own project (and thereby its class files in the JAR). INFO 0 - .evaulate(LauncherTest.java:28) - Computing postfix for the expression: 12 3 / Second-external.zip vs second-internal.zipĭ:\JavaDevelopment\Testing\ForumQuestions3\Security>java =mypolicy.policy -jar first-external.zip "12 3 /"Įxception in thread "main" : access denied ( )Īt (Unknown Source)Īt (Unknown Source)Īt (Unknown Source)Īt $4.run(Unknown Source)Īt (Native Method)Īt (Unknown Source)Īt (Unknown Source)Īt (Unknown Source)Īt (Unknown Source)Īt $000(Unknown Source)Īt $1.run(Unknown Source)Īt (Unknown Source)Īt (Unknown Source)Īt 0(Native Method)Īt (Unknown Source)Īt .(JarRsrcLoader.java:54)ĭ:\JavaDevelopment\Testing\ForumQuestions3\Security>MOREĭ:\JavaDevelopment\Testing\ForumQuestions3\Security>java =mypolicy.policy -jar second-internal.zip "12 3 /"
#Run java jar file command line mac zip#
What is the first one supposed to do? Why is it trying to get permissions?Īlso the posted notes on executing the programs has a different name than the zip file: Here's what I get in the console when I run the zip files. For executing: java -jar first-external.zip "12 3 /" java -jar second-external.zip "12 3 /" It's a throwaway Postfix calculator which uses log4j instead of sysouts. I'm currently attaching the two JARs (zips, doesn't really matter) created using both the approaches in case you are interested. log4j) and place the entire package hierarchy in the newly created JARĮclipse supports both the behaviors (enabled by selecting option 1 or option 2 in the "Library Handling" part which I mentioned in my previous post). Approach 2: Uncompress all the dependent JAR files (e.g.Take a look at the contents of the "org" package in the attached "first-external.zip" file. In this case, we use the utility class offered by Eclipse for doing the same. Here the manifest file is the one which is responsible for all the magic. Approach 1: Create a custom classloader which will be the main class for our JAR and which is responsible for loading the contents of the JAR file packaged in the JAR.Currently there are two approaches that are followed by packaging tools: What programs are able to access the contents of the internal jar file?ĪFAIK, there is no "standard" way of referring to a JAR file which is packaged within a given JAR file.
This is so that the JAR can be self-sufficient in executing your packaged application without relying on the user to place the JAR dependencies at pre-determined locations. Why do you want one jar file inside of another jar file?
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