Java Math ceil() usage and example

Java Math Mathematical Methods

The Java Math ceil() method rounds the specified double value up and returns it.

The rounded value should be equal to a mathematical integer. That is, the value3.4Should be rounded to4.0, equal to an integer4.

The syntax of the ceil() method is:

Math.ceil(double value)

Note：ceil() is a static method. Therefore, we can access this method using the class name Math.

ceil() parameter

• value - The number to be rounded up

Return value of ceil()

• Returns the rounded value equal to a mathematical integer

Note: The returned value should be the smallest value that is greater than or equal to the specified parameter.

Example: Java Math.ceil()

class Main {
　　public static void main(String[] args) {
　　　　//Math.ceil() Method.
　　　　//is greater than the decimal point5The value
　　　　double a =　1.878;
　　　　System.out.println(Math.ceil(a));　　//　2.0
　　　　//The value after the decimal point is equal to5
　　　　double b =　1.5;
　　　　System.out.println(Math.ceil(b));　　//　2.0
　　　　//is less than the decimal point5The value
　　　　double c =　1.34;
　　　　System.out.println(Math.ceil(c));　　//　2.0
　　}
}

Recommended Tutorials

• Math.floor()

• Math.round()

• Math.min()

• Math.max()

Java Math Mathematical Methods