We read about using dollar sign in class name, but that dosen't work! Why? (Read the description)

Question

class Programmer -> works
class $Programmer -> dosen't work
class Programmer$Vibhu -> works
class $ -> dosen't work

Remember:
This is not a syntax error.
This is neither a Logical error, nor runtime error!

Try it yourself!

So, Is it a bug?

Answer 1

new languages come from older languages and sepcial characters at the beginning of a variable name can mean something else. Tradition and ascii vs unicode. every character is important.