question: public static String toInternalForm ( String d ) { if ( d . charAt ( 0 ) != 'L' ) { throw new JaninoRuntimeException ( "Attempt to convert non-class descriptor \"" + d + "\" into internal form" ) ; } return d . substring ( 1 , d . length ( ) - 1 ) ; }
target:  Converts a descriptor into the "internal form" as defined by JVMS 4.2.