We want to describe Javastyle class declarations same as the following examples class Car extends Vehicle public final class President extends Person implements Official For this we have the following grammar: public class JavalsCrazy implements Factory, Builder, Listener (1) C P F class identifier X Y (2) P public (3) P- E (4) F- final (5) F->E (6) X extends identifier (8) Y implements I (9) Y-E (10) I-identifier J (11) J, I (12) J