Java Math.round() is a static method in the Java Math class that rounds a Java float or Java double value to the nearest integer, returning the result as a Java long. It is commonly used for rounding numerical values in applications that require an integer result. Introduced in Java 1995 with Java 1.0, round() is essential for simplifying numerical data when working with floating-point precision.

https://docs.oracle.com/javase/8/docs/api/java/lang/Math.html