How to run java code from shell script on linux

Question

I want to set a cron job for my java code and I have tried this from project directory

    java -classpath .:/home/project/lib/* pkg_name.my_code

and it works fine, however I dont know how to run it from any other directory[like in script] I have tried to add diroctry (having compiled classes) in classpath like this

    java -classpath .:/home/project/lib/*;/home/project/pkg_name/* pkg_name.my_code

also tried

    java -classpath ".:/home/project/lib/*;/home/project/pkg_name/*" pkg_name.my_code

but it gives error:

**Error: Could not find or load main class pkg_name.my_code **

can any please help me ?

Try removing the wildcards. Just put the name of the directory containing the packages, or the full name (directory+filename) of the jars. e.g.: -classpath /home/project:/home/project/lib/someJar.jar:/home/project/lib/someOtherJar.jar — Benjamin
– Benjamin, Commented Sep 25, 2014 at 14:52
in lib I have jars, and under pakg_name class (compiled one) file, which I want to run — Tasawer Nawaz
– Tasawer Nawaz, Commented Sep 25, 2014 at 14:53
Assuming that your class name is my_code in the package pkg_name, the following should work: java -classpath /home/project:/home/project/lib/someJar.jar:/home/project/lib/someOtherJar.jar pkg_name.my_code — Benjamin
– Benjamin, Commented Sep 25, 2014 at 14:57

Ramsharan · Accepted Answer · 2014-09-25 17:05:22Z

1

If you want to run your project from another directory, then you need to include your project in classpath. So you can do this

java -classpath ".:/home/project/lib/*:/home/project" pkg_name.my_code

For example :

java -classpath ".:/home/test/runjavafromanotherdirectory/lib/*:./runjavafromanotherdirectory" com.test.Main

One of your mistake is you are using ; instead of :.

answered Sep 25, 2014 at 17:05

Ramsharan

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