Is prince William decended from Anne Boleyn?  ?

No one is descended from her. Her only child who grew up never had any children.

Elizabeth 1st was her daughter but she had no children

Ann Boleyn had one child, Queen Elizabeth I, who died childless, so no one is descended from her.

Prince  William  is  descended  from  the Plantagenets  the kings of England  from both  parents   as the Princess of Wales  was also  a descendent  from them, unlike  Harrys wife who  descends  from  servants  and slaves

Anne Boleyn's only child, Elizabeth I died childless. The link to the Boleyns would be through Mary Boleyn--an indirect link.

William is descended from the Tudors through Henry VIII's sister, Margaret, as well.

No. Anne Boleyn's line ended with her daughter, Elizabeth I who died childless.

William is descended from Anne's sister, Mary known as  "The Other Boleyn Girl"

Anne Boleyns only surviving child didn’t have any children, does that answer your question. 

No.  Anne's only surviving child -- Queen Elizabeth I -- had no children of her own.

However, Anne's sister, Mary Boleyn, does have descendants, and Prince William is a descendant of the Boleyns through THAT line. See below.

William is also a descendant of Henry VIII's older sister Margaret, who married a King of Scotland, so William descends from the Tudors, the Plantagenets, William the Conqueror, and back to the Anglo-Saxon kings of England, plus the Stuarts of Scotland.