Examples of java.security.Permission

java.security.Permission
Abstract class for representing access to a system resource. All permissions have a name (whose interpretation depends on the subclass), as well as abstract functions for defining the semantics of the particular Permission subclass.
Most Permission objects also include an "actions" list that tells the actions that are permitted for the object. For example, for a java.io.FilePermission object, the permission name is the pathname of a file (or directory), and the actions list (such as "read, write") specifies which actions are granted for the specified file (or for files in the specified directory). The actions list is optional for Permission objects, such as java.lang.RuntimePermission, that don't need such a list; you either have the named permission (such as "system.exit") or you don't.
An important method that must be implemented by each subclass is the implies method to compare Permissions. Basically, "permission p1 implies permission p2" means that if one is granted permission p1, one is naturally granted permission p2. Thus, this is not an equality test, but rather more of a subset test.
Permission objects are similar to String objects in that they are immutable once they have been created. Subclasses should not provide methods that can change the state of a permission once it has been created. @see Permissions @see PermissionCollection @version 1.40 05/11/17 @author Marianne Mueller @author Roland Schemers

    String[] s = new String[n];
    for(int i=0; i<n; i++) { 
      s[i] = args[i].toString();
    }
    try {
      Permission p = anvil.server.PolicyPreferences.createPermission(s);
      if (p == null) {
        throw context.BadParameter("Permission"); 
      }
      return new AnyPermission(p);
    } catch (Throwable t) {

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  public final void serialize(Serializer serializer) throws IOException 
  {
    if (serializer.register(this)) {
      return;
    }
    Permission perm = _permission;
    serializer.write('P');
    serializer.write(perm.getClass().getName());
    serializer.write(perm.getName());
    serializer.write(perm.getActions());
  }

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            return;
        }


        // the check
        try {
            final Permission sp = new SystemPermission(
                SystemPermission.ENGINE, SystemPermission.SHUTDOWN);
            checkSystemPrivileges(user, sp);
        } catch (AccessControlException ace) {
            throw Util.generateCsSQLException(
        SQLState.AUTH_SHUTDOWN_MISSING_PERMISSION,

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            }
        }


        Enumeration e = notAssigned.elements();
        while (e.hasMoreElements()) {
            Permission p = (Permission) e.nextElement();
            permissions.add(p);
        }


    }

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     */
    private Permissions cullPermissions(Permissions toBeChecked, Permission permission) {
        Permissions result = new Permissions();


        for (Enumeration e = toBeChecked.elements(); e.hasMoreElements();) {
            Permission test = (Permission) e.nextElement();
            if (!permission.implies(test)) {
                result.add(test);
            }
        }

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            }
        }


        Enumeration e = notAssigned.elements();
        while (e.hasMoreElements()) {
            Permission p = (Permission) e.nextElement();
            permissions.add(p);
        }


    }

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     */
    private Permissions cullPermissions(PermissionCollection toBeChecked, Permission permission) {
        Permissions result = new Permissions();


        for (Enumeration e = toBeChecked.elements(); e.hasMoreElements();) {
            Permission test = (Permission) e.nextElement();
            if (!permission.implies(test)) {
                result.add(test);
            }
        }

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            InterfaceType type = deploymentInfo.getInterfaceType(method.getDeclaringClass());


            String name = (type == null) ? null : type.getSpecName();


            Permission permission = new EJBMethodPermission(ejbName, name, method);


            AccessControlContext accessContext = ContextManager.getCurrentContext();


            if (permission != null) accessContext.checkPermission(permission);

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  /**
   * Permission will be named "invoke.<declaring-class>.<method-name>".
   */
  public static Permission getPermission(Method method) {
    Permission result = null;
    Class mc = method.getDeclaringClass();


    synchronized (invokePermissionCache) {
      Map permissions = (Map) invokePermissionCache.get(mc);

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        try {
            // raises IOException if dbname is non-canonicalizable
            final String url
                = (DatabasePermission.URL_PROTOCOL_DIRECTORY
                   + stripSubSubProtocolPrefix(dbname));
            final Permission dp
                = new DatabasePermission(url, DatabasePermission.CREATE);
            
            factory.checkSystemPrivileges(user, dp);
        } catch (AccessControlException ace) {
            throw Util.generateCsSQLException(

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