I want to do the exact same thing as the FontSelector class in itext5 but cannot find the equivalent for it in itext7.
Is there such an equivalent Class in itext7?
Or is there another way of doing it?
Currently there is not
FontSelector class implemented in iText7, but it is on the roadmap.
Meanwhile, you can use
PdfFont#containsGlyph(char unicode) to check if a font contains the glyph which corresponds to the passed Unicode value.