Classify the following as primitive or non-primitive data types: (i) char (ii) arrays (iii) int (iv) classes

(i) char — primitive (ii) arrays — non-primitive (iii) int — primitive (iv) classes — non-primitive

Java has exactly eight primitive types: byte, short, int, long, float, double, char and boolean. Everything else — arrays, classes, interfaces and String — is non-primitive, also called reference or composite. The distinguishing feature: a primitive holds a single value directly, while a non-primitive holds a reference to something that may contain many values. Remember that String is non-primitive despite how often it is used.