Java ceil() method with Examples

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 determined
Returns : This method returns the double value that is greater than or equal
to the argument and is equal to the nearest mathematical integer.

Example :To show working of java.lang.Math.ceil() method.

 `// 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
```

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