Question

What are data types? how are types important?

Answer 1

Data types are important in programming languages, so that the memory which has to be given to store a particular data that can be stored. Data types tells MMU that how much memory requirement it has before the program compiles.

Answer 2

Answer:

Data types are especially important in Java because it is a strongly typed language. ... To enable strong type checking, all variables, expressions, and values have a type. There is no concept of a “type-less” variable, for example. Furthermore, the type of a value determines what operations are allowed on it.