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I have a compiled project in a jar file and I need to call a method from it.How can I do that in ubuntu terminal?

shift66
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4 Answers4

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You can not call any method from terminal or cmd of any class.

You can execute class through terminal.

If your jar is executable try: java -jar "Name of your Jar"

Or set the class path of your jar: java -classpath path-to-jar <package>.<classname>

JoshDM
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Sumit Singh
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    We can give the method name as parameter. If it is public, it will run. java -jar . It executes all the methods with the same name across all the packages in the jar. – Sashank Oct 27 '16 at 08:20
  • How doe you call the method though? – Demodave Jul 08 '21 at 21:41
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java -cp path/to/jar <package>.<classname>

example:

java -cp test.jar org.dekz.HelloWorld
dekz
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I need to call a method from it.

This is not very specific statement. if you are interested to call main method of your Main class then you can do

java -jar path/to/yourjar/yourJar.jar

if you want to call a method from this class from another class then you need to add this jar into your classpath and then you can access other methods. but since you wrote from terminal I assume the first approach fits for you

jmj
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-1

you can call a specific method from a jar file if and only if the developer programmed the file to call it from outside. You can use a jar explorer to fine the details of each class inside a jar file

Ajmal Muhammad P
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