How to enforce a security policy for each and every executing java program

Question

How can i specify a security policy for a JVM that will be applied to every program executed inside it.

Answer 1

Update the default java security policy file for the JVM:

https://docs.oracle.com/javase/8/docs/technotes/guides/security/PolicyFiles.html

Alternatively if you want a different policy file for each application, you need to define the policy on startup by adding the following setting to the java command:

-Djava.security.manager -Djava.security.policy=/path/to/app.policy