Examples of sun.security.action.GetPropertyAction

sun.security.action.GetPropertyAction
A convenience class for retrieving the string value of a system property as a privileged action.
An instance of this class can be used as the argument of AccessController.doPrivileged.
The following code retrieves the value of the system property named "prop" as a privileged action:
```
 String s = java.security.AccessController.doPrivileged (new GetPropertyAction("prop")); 
```
@author Roland Schemers @see java.security.PrivilegedAction @see java.security.AccessController @since 1.2

     */
    private static boolean getSuppressDropTarget() {
        if (!checkedSuppressDropSupport) {
            suppressDropSupport = Boolean.valueOf(
                AccessController.doPrivileged(
                    new GetPropertyAction("suppressSwingDropSupport")));
            checkedSuppressDropSupport = true;
        }
        return suppressDropSupport;
    }

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    /**
     * Simple utility method that reads system keys.
     */
    private String getSystemProperty(String key) {
        return AccessController.doPrivileged(new GetPropertyAction(key));
    }

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    static boolean shouldReconfigure(PropertyChangeEvent e) {
        if (e.getPropertyName() == null) {
            synchronized(AbstractAction.class) {
                if (RECONFIGURE_ON_NULL == null) {
                    RECONFIGURE_ON_NULL = Boolean.valueOf(
                        AccessController.doPrivileged(new GetPropertyAction(
                        "swing.actions.reconfigureOnNull", "false")));
                }
                return RECONFIGURE_ON_NULL;
            }
        }

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  /**
   * Returns META-Key on MacOS X, and CTRL-Key on other platforms.
   */
  public static Key plaformSpecificCtrl(Key key) {
    String os = (String)AccessController.doPrivileged(new GetPropertyAction("os.name"));
    boolean isMacOSX = os.contains("Mac OS X");
    return isMacOSX ? meta(key) : control(key);
  }

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        String level = bugLevel;
        if (level == null) {
            if (!sun.misc.VM.isBooted())
                return false;
            bugLevel = level = AccessController.doPrivileged(
                new GetPropertyAction("sun.nio.cs.bugLevel", ""));
        }
        return level.equals(bl);
    }

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     */
    public static Charset defaultCharset() {
        if (defaultCharset == null) {
            synchronized (Charset.class) {
                String csn = AccessController.doPrivileged(
                    new GetPropertyAction("file.encoding"));
                Charset cs = lookup(csn);
                if (cs != null)
                    defaultCharset = cs;
                else
                    defaultCharset = forName("UTF-8");

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    private final char colon;
    private final String javaHome;


    public UnixFileSystem() {
        slash = AccessController.doPrivileged(
            new GetPropertyAction("file.separator")).charAt(0);
        colon = AccessController.doPrivileged(
            new GetPropertyAction("path.separator")).charAt(0);
        javaHome = AccessController.doPrivileged(
            new GetPropertyAction("java.home"));
    }

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            /**
             * Determine class name for activation exec policy (if any).
             */
            String execPolicyClassName = AccessController.doPrivileged(
                new GetPropertyAction("sun.rmi.activation.execPolicy", null));
            if (execPolicyClassName == null) {
                if (!stop) {
                    DefaultExecPolicy.checkConfiguration();
                }
                execPolicyClassName = "default";

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        if (reImpl == null) {
            throw new InternalError("No RenderingEngine module found");
        }


        GetPropertyAction gpa =
            new GetPropertyAction("sun.java2d.renderer.trace");
        String reTrace = (String) AccessController.doPrivileged(gpa);
        if (reTrace != null) {
            reImpl = new Tracer(reImpl);
        }

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        // do not synchronize this method - see 4071298
        // it's OK if more than one default locale happens to be created
        if (defaultLocale == null) {
            String language, region, country, variant;
            language = AccessController.doPrivileged(
                new GetPropertyAction("user.language", "en"));
            // for compatibility, check for old user.region property
            region = AccessController.doPrivileged(
                new GetPropertyAction("user.region"));
            if (region != null) {
                // region can be of form country, country_variant, or _variant
                int i = region.indexOf('_');
                if (i >= 0) {
                    country = region.substring(0, i);
                    variant = region.substring(i + 1);
                } else {
                    country = region;
                    variant = "";
                }
            } else {
                country = AccessController.doPrivileged(
                    new GetPropertyAction("user.country", ""));
                variant = AccessController.doPrivileged(
                    new GetPropertyAction("user.variant", ""));
            }
            defaultLocale = getInstance(language, country, variant);
        }
        return defaultLocale;
    }

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