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.

        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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        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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     */
    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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