Unicode Character 'REPLACEMENT CHARACTER' (U+FFFD)

Hi Guys ,

      I am new to vaadin and i am currently working in web application project ,in our project we displaying raw logs while displaying raw logs ,the raw log which have these ��� unicode characters , but in browser its displaying as �fffd�fffd�fffd , but we need only the characters as ��� .if any possible solution please do needful 

Thanks in advance

Hi friends do u have any solutions for my query ?