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Text lesson

round()

Example

Rewrite: “Approximate the numbers to the nearest whole number.”

System.out.println(Math.round(0.60));
System.out.println(Math.round(0.40));
System.out.println(Math.round(5));
System.out.println(Math.round(5.1));
System.out.println(Math.round(-5.1));
System.out.println(Math.round(-5.9));

Definition and Usage

The round() function rounds a number to the closest integer.

Syntax

One of the following:

public static long round(double number)

public static int round(float number)

Parameter Values

Parameter	Description
number	“Necessary. A value to be rounded.”

Technical Details

Returns:	“A long integer (if the argument is a double) or an integer (if the argument is a float) representing the closest whole number to a given value.”
Java Version:	Any