The java.lang.Math.ceil() returns the double value that is greater than or equal to the argument and is equal to the nearest mathematical integer.
Note:
- If the argument is Integer, then the result is Integer.
- If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.
- If the argument value is less than zero but greater than -1.0, then the result is negative zero.
Syntax:
public static double ceil(double a)
a : the argument whose ceil value is to be determinedReturns : This method returns the double value that is greater than or equal to the argument and is equal to the nearest mathematical integer.
Example 01:To show working of java.lang.Math.ceil() method.
java
// Java program to demonstrate working// of java.lang.Math.ceil() methodimport java.lang.Math;class Gfg { // driver code public static void main(String args[]) { double a = 4.3; double b = 1.0 / 0; double c = 0.0; double d = -0.0; double e = -0.12; System.out.println(Math.ceil(a)); // Input Infinity, Output Infinity System.out.println(Math.ceil(b)); // Input Positive Zero, Output Positive Zero System.out.println(Math.ceil(c)); // Input Negative Zero, Output Negative Zero System.out.println(Math.ceil(d)); // Input less than zero but greater than -1.0 // Output Negative zero System.out.println(Math.ceil(e)); }} |
Output:
5.0 Infinity 0.0 -0.0 -0.0
Example 02: To show the working of ceil() with a positive double value
Java
import java.io.*;class GFG { public static void main (String[] args) { double number = 3.5; double result = Math.ceil(number); System.out.println(result); // Output: 4.0 }} |
Output :
4.0
