public FileFormat(String name,String mimeType,Charset charset,String fileExtension){
  this(name,Arrays.asList(mimeType),charset,Arrays.asList(fileExtension));
}

public FileFormat ( String name , String mimeType , Charset charset , String fileExtension ) { this ( name , Arrays . asList ( mimeType ) , charset , Arrays . asList ( fileExtension ) ) ; }
creates a new fileformat object .
