Ceiling function java: In the previous article, we have seen Java Program to Find Cube Root of a Number
In this article we are going to see how to find ceiling value of a given number using Java programming language.
Java Program to Get Ceiling Value of a Number
Before Jumping into the program directly let’s see how to find ceiling value of any given number.
Explanation:
Ceiling is often used as a rounding function. This is a single-value function.
In java we have Math.ceil()
which takes an argument as input and returns a double ceiling value as output.
It returns the closest integer value greater than or equal to a given number and also equal to nearest mathematical integer.
Important-
- When input argument is an integer then output is also integer.
- When input argument NaN or an infinity or Positive zero or Negative zero then output is also same as the input argument.
- When input argument is greater than -1 but less than 0 then output is Negative zero.
Example:
When n= 5.3 then ceiling value = 6.0 n= 0.0 then ceiling value = 0.0 n= -463.33 then ceiling value = -463.00 n= -0.11 then ceiling value = -0.0
Let’s see different ways to find ceiling value of a given number.
Method-1: Java Program to Get Ceiling Value of a Number By Using Math.ceil() Method (Static Input)
Approach:
- Declare double variables to hold input arguments and assign the value to it.
- Now by using
Math.ceil()
find the ceiling values of input arguments. - Print the result.
Program:
import java.io.*; class Main { public static void main(String [] args) { //input arguments declared double a = -0.11; double b = 5.3; double c = 0.0; double d = -463.33; //finding ceiling value by using Math.ceil() double ceila = Math.ceil(a); double ceilb = Math.ceil(b); double ceilc = Math.ceil(c); double ceild = Math.ceil(d); //printing the results System.out.println("The ceiling value of " + a + " is " + ceila); System.out.println("The ceiling value of " + b + " is " + ceilb); System.out.println("The ceiling value of " + c + " is " + ceilc); System.out.println("The ceiling value of " + d + " is " + ceild); } }
Output: The ceiling value of -0.11 is -0.0 The ceiling value of 5.3 is 6.0 The ceiling value of 0.0 is 0.0 The ceiling value of -463.33 is -463.0
Method-2: Java Program to Get Ceiling Value of a Number By Using Math.ceil() Method (Dynamic Input)
Approach:
- Declare double variables to hold input arguments and take the values of it as user input by using Scanner class.
- Now by using
Math.ceil()
find the ceiling values of input arguments. - Print the result.
Program:
import java.util.*; class Main { public static void main(String [] args) { //Scanner class object created Scanner s = new Scanner(System.in); System.out.println("Enter input argument to find its ceiling value:"); double a = s.nextDouble(); //finding ceiling value by using Math.ceil() double ceila = Math.ceil(a); //printing the results System.out.println("The ceiling value of " + a + " is " + ceila); } }
Output: Enter input argument to find its ceiling value: 5.3 The ceiling value of 5.3 is 6.0
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