Java™ 2 security uses several policy files to determine the granted permission for each Java program.
See Java 2 security policy files for the list of available policy files that are supported by WebSphere® Application Server.
The java.policy file is located in java_home/lib/security if your application server profile is enabled for the Classic JVM. Otherwise, The java.policy file is located in java_home/jre/lib/security if you application server is enabled for the IBM Technology for Java JVM. For all JVMs, the java.policy file is used system-wide. Do not edit the java.policy file on the server.