question: public void write ( DataOutputStream out ) throws IOException { int i , n ; out . writeInt ( 0xCAFEBABE ) ; out . writeShort ( minor ) ; out . writeShort ( major ) ; constPool . write ( out ) ; out . writeShort ( accessFlags ) ; out . writeShort ( thisClass ) ; out . writeShort ( superClass ) ; if ( interfaces == null ) n = 0 ; else n = interfaces . length ; out . writeShort ( n ) ; for ( i = 0 ; i < n ; ++ i ) out . writeShort ( interfaces [ i ] ) ; ArrayList list = fields ; n = list . size ( ) ; out . writeShort ( n ) ; for ( i = 0 ; i < n ; ++ i ) { FieldInfo finfo = ( FieldInfo ) list . get ( i ) ; finfo . write ( out ) ; } list = methods ; n = list . size ( ) ; out . writeShort ( n ) ; for ( i = 0 ; i < n ; ++ i ) { MethodInfo minfo = ( MethodInfo ) list . get ( i ) ; minfo . write ( out ) ; } out . writeShort ( attributes . size ( ) ) ; AttributeInfo . writeAll ( attributes , out ) ; }
target:  Writes a class file represented by this object into an output stream.