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() method import 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