question: private static AccessControlContext createPrivilegedContext ( Class caller , AccessControlContext acc ) { DomainCombiner comb = acc . getDomainCombiner ( ) ; ProtectionDomain pd = caller . getProtectionDomain ( ) ; ProtectionDomain [ ] pds = ( pd != null ) ? new ProtectionDomain [ ] { pd } : null ; if ( comb != null ) { pds = comb . combine ( pds , null ) ; } if ( pds == null ) { pds = new ProtectionDomain [ 0 ] ; } return new AccessControlContext ( new AccessControlContext ( pds ) , comb ) ; }
target:  Creates privileged context that contains the protection domain of the given caller class (if non-null) and uses the domain combiner of the specified context.  This method assumes it is called from within a privileged block.