What is binary Files? And String Tokenizer?

Answer 1

The java.util.StringTokenizer class allows an application to break a string into tokens. This class is a legacy class that is retained for compatibility reasons although its use is discouraged in new code. Its methods do not distinguish among identifiers, numbers, and quoted strings

Answer 2

Binary means that you treat data as just 1 and 0, so you then Interpret it as different kinds of data.

StringTokenizer is a class in the standard library to cut strings apart. It is deprecated, that is no longer recommended. Use String::split.