Examples of java.security.Policy.refresh()

java.security.Policy.refresh()
Refreshes/reloads the policy configuration. The behavior of this method depends on the implementation. For example, calling refresh on a file-based policy will cause the file to be re-read.
The default implementation of this method does nothing. This method should be overridden if a refresh operation is supported by the policy implementation.

        if (!POLICY_INSTALLED) {
            policyProvider = sysOverRide(policyProvider, POLICY_PROVIDER);


            if (policyProvider != null) {
                Policy policy = (Policy) classLoader.loadClass(policyProvider).newInstance();
                policy.refresh();
                Policy.setPolicy(policy);
            }


            POLICY_INSTALLED = true;
        }

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        try {
            // The policy file may have been modified to adjust
            // permissions, so we're reloading it when loading or
            // reloading a Context
            Policy policy = Policy.getPolicy();
            policy.refresh();
        } catch (AccessControlException e) {
            // Some policy files may restrict this, even for the core,
            // so this exception is ignored
        }

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        try {
            // The policy file may have been modified to adjust 
            // permissions, so we're reloading it when loading or 
            // reloading a Context
            Policy policy = Policy.getPolicy();
            policy.refresh();
        } catch (AccessControlException e) {
            // Some policy files may restrict this, even for the core,
            // so this exception is ignored
        }

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    public static void refreshPolicy(File policyFile) {
        int idx = firstFreePolicyIndex();
        URI policyFileURI = policyFile.toURI();
        java.security.Security.setProperty("policy.url." + idx, policyFileURI.toASCIIString());
        Policy p = Policy.getPolicy();
        p.refresh();
    }
    
    /**
     *The methods below are duplicates from the com.sun.enterprise.appclient.jws.Util class.
     *At the time this class is running, Java Web Start will not yet permit the Util class to

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        try {
            // The policy file may have been modified to adjust 
            // permissions, so we're reloading it when loading or 
            // reloading a Context
            Policy policy = Policy.getPolicy();
            policy.refresh();
        } catch (AccessControlException e) {
            // Some policy files may restrict this, even for the core,
            // so this exception is ignored
        }

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        // Install new security manager
        System.setSecurityManager(securityManager);
        lastSecurityManagerInstalled = securityManager;
        
        // Forces re-loading of the security policy
        policy.refresh();


        if (securityPolicyProperty == null || securityPolicyProperty.equals("")) {
            System.setProperty(PROPERTY_JAVA_SECURITY_POLICY, "");
        }
    }

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        try {
            // The policy file may have been modified to adjust 
            // permissions, so we're reloading it when loading or 
            // reloading a Context
            Policy policy = Policy.getPolicy();
            policy.refresh();
        } catch (AccessControlException e) {
            // Some policy files may restrict this, even for the core,
            // so this exception is ignored
        }

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        try {
            // The policy file may have been modified to adjust 
            // permissions, so we're reloading it when loading or 
            // reloading a Context
            Policy policy = Policy.getPolicy();
            policy.refresh();
        } catch (AccessControlException e) {
            // Some policy files may restrict this, even for the core,
            // so this exception is ignored
        }

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        if (!POLICY_INSTALLED) {
            policyProvider = sysOverRide(policyProvider, POLICY_PROVIDER);


            if (policyProvider != null) {
                Policy policy = (Policy) classLoader.loadClass(policyProvider).newInstance();
                policy.refresh();
                Policy.setPolicy(policy);
            }


            POLICY_INSTALLED = true;
        }

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            policyConfiguration.commit();
        }


        //refresh policy
        Policy policy = Policy.getPolicy();
        policy.refresh();


        for (Iterator iterator = roleDesignates.entrySet().iterator(); iterator.hasNext();) {
            Map.Entry entry = (Map.Entry) iterator.next();
            Subject roleDesignate = (Subject) entry.getValue();
            ContextManager.registerSubject(roleDesignate);

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