question: public Class < ? > loadClass ( String name , boolean resolve ) throws ClassNotFoundException { int i = name . lastIndexOf ( '.' ) ; if ( i != - 1 ) { SecurityManager sm = System . getSecurityManager ( ) ; if ( sm != null ) { sm . checkPackageAccess ( name . substring ( 0 , i ) ) ; } } if ( ucp . knownToNotExist ( name ) ) { Class < ? > c = findLoadedClass ( name ) ; if ( c != null ) { if ( resolve ) { resolveClass ( c ) ; } return c ; } throw new ClassNotFoundException ( name ) ; } return ( super . loadClass ( name , resolve ) ) ; }
target:  Override loadClass so we can checkPackageAccess.