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List of Functions in a Jar File

Contributor

How to get the list of functions available in any jar file?

Let us say I have Piggybank.Jar.It contains Reverse,UnixToISO() etc.

Is there any command to get list of functions available in Jar file rather than using Google for it?

1 ACCEPTED SOLUTION

@vamsi valiveti,

You need atleast the classname to get all the methods available in the class. I can think of a solution without Google.

Method 1: Run this command (Replace jar-path with real jar path)

jar -tf {jar-path} | grep -i class | sed -e 's/\//./g' | sed -e 's/\.class//g' | xargs javap -classpath {jar-path}

Method 2:

You can open the Jar file and check the list of the classes and then list the methods in the class

1) Check the classnames using vim (not vi)

vim  Piggybank.jar

2) Take the clasname in which you want to list the methods (copy the path including package name)

javap -classpath {path-to-jar-file} {full-class-name-including-package-name}
ex: javap -classpath example.jar org.apache.hadoop.xyz.Abc (Abc is the class name)

.

If this helps, please take a moment to login and Accept the answer.

View solution in original post

1 REPLY 1

@vamsi valiveti,

You need atleast the classname to get all the methods available in the class. I can think of a solution without Google.

Method 1: Run this command (Replace jar-path with real jar path)

jar -tf {jar-path} | grep -i class | sed -e 's/\//./g' | sed -e 's/\.class//g' | xargs javap -classpath {jar-path}

Method 2:

You can open the Jar file and check the list of the classes and then list the methods in the class

1) Check the classnames using vim (not vi)

vim  Piggybank.jar

2) Take the clasname in which you want to list the methods (copy the path including package name)

javap -classpath {path-to-jar-file} {full-class-name-including-package-name}
ex: javap -classpath example.jar org.apache.hadoop.xyz.Abc (Abc is the class name)

.

If this helps, please take a moment to login and Accept the answer.