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.

        final String policyProvider = SystemInstance.get().getOptions().get("javax.security.jacc.policy.provider", JaccProvider.Policy.class.getName());
        try {
            final ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
            final Class policyClass = Class.forName(policyProvider, true, classLoader);
            final Policy policy = (Policy) policyClass.newInstance();
            policy.refresh();
            Policy.setPolicy(policy);
        } catch (final Exception e) {
            throw new IllegalStateException("Could not install JACC Policy Provider: " + policyProvider, e);
        }
    }

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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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        // 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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        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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     */
    protected final PermissionCollection getPermissions(CodeSource codeSource) {
        if (!policy_refresh) {
            // Refresh the security policies
            Policy policy = Policy.getPolicy();
            policy.refresh();
            policy_refresh = true;
        }
        String codeUrl = codeSource.getLocation().toString();
        PermissionCollection pc;
        if ((pc = (PermissionCollection)loaderPC.get(codeUrl)) == null) {

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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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