Question:  Is Java pure object-oriented language ?
Answer: No, since there are many things in java that are not an object, as primitive data types and different type of arithmetic, logical & bitwise operators.

Primitive data types:
1. boolean, char, short, int
2. long, float, double

Different type of arithmetic operators are:
+,-,*,/,&&,|| etc

However, Java is one of the most successful object-oriented programming language.