question: public boolean implies ( Permission permission ) { if ( ! ( permission instanceof PropertyPermission ) ) return false ; PropertyPermission pp = ( PropertyPermission ) permission ; PropertyPermission x ; int desired = pp . getMask ( ) ; int effective = 0 ; if ( all_allowed ) { synchronized ( this ) { x = perms . get ( "*" ) ; } if ( x != null ) { effective |= x . getMask ( ) ; if ( ( effective & desired ) == desired ) return true ; } } String name = pp . getName ( ) ; synchronized ( this ) { x = perms . get ( name ) ; } if ( x != null ) { effective |= x . getMask ( ) ; if ( ( effective & desired ) == desired ) return true ; } int last , offset ; offset = name . length ( ) - 1 ; while ( ( last = name . lastIndexOf ( "." , offset ) ) != - 1 ) { name = name . substring ( 0 , last + 1 ) + "*" ; synchronized ( this ) { x = perms . get ( name ) ; } if ( x != null ) { effective |= x . getMask ( ) ; if ( ( effective & desired ) == desired ) return true ; } offset = last - 1 ; } return false ; }
target:  Check and see if this set of permissions implies the permissions expressed in "permission".