The Java method Math.round can be used to round numbers. Which of the following code fragments converts a floating-point number to the nearest integer?
A) double f = 4.65;
int n = (int) Math.round(100 * f);
B) double f = 4.65;
int n = (int) Math.round(f);
C) double f = 4.65;
int n = Math.round(f);
D) double f = 4.65;
int n = (int) f;

Question

Quizplus · Accepted Answer

The Math.round method returns the closest long to the argument, so in order to get an integer we need to cast it to int. Option B ensures that the double f is rounded to the nearest integer value before being cast to an int.

The Java Method Math