What is the variable 'type' on line 19?

The variable type in Java is not a reserved keyword, so if it is declared on line 19, it is most likely a variable or parameter name.

type is often used to store information about the object's type, category, or to pass data type in methods or constructors.

For example:

String type = "admin";

Or in the context of generics:

Class<?> type = obj.getClass();

Without specific code, it's hard to say for sure, but usually type is just a variable holding a string or an object describing the type or category of something.