# Java Guava | binomial() method of IntMath Class

• Last Updated : 23 Jan, 2019

The binomial(int n, int k) method of Guava’s IntMath class accepts two parameters n and k and calculate the value of the binomial coefficient .

If the calculated value overflows the maximum value of an integer than the method returns Integer.MAX_VALUE or in other words the maximum value of an integer.

Syntax :

```public static int binomial(int n, int k)
```

Parameter: This method accepts two parameters n and k and calculate the value of the binomial coefficient .

Return Value : The method returns the binomial coefficient of n and k.

Exceptions : The method binomial(int n, int k) throws IllegalArgumentException if n < 0, k < 0 or k > n.

Below examples illustrate the binomial() method of IntMath class:

Example 1 :

 `// Java code to show implementation of``// binomial(int n, int k) method of Guava's``// IntMath class``import` `java.math.RoundingMode;``import` `com.google.common.math.IntMath;`` ` `class` `GFG {`` ` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``int` `n = ``5``;``        ``int` `k = ``2``;`` ` `        ``// Using binomial(int n, int k) method of``        ``// Guava's IntMath class``        ``int` `ans = IntMath.binomial(n, k);`` ` `        ``System.out.println(``"Binomial Coefficient of "` `+ n ``                              ``+ ``" and "` `+ k + ``" is : "` `+ ans);`` ` `        ``int` `n1 = ``15``;``        ``int` `k1 = ``9``;`` ` `        ``// Using binomial(int n, int k) method of``        ``// Guava's IntMath class``        ``int` `ans1 = IntMath.binomial(n1, k1);`` ` `        ``System.out.println(``"Binomial Coefficient of "` `+ n1 ``                             ``+ ``" and "` `+ k1 + ``" is : "` `+ ans1);``    ``}``}`

Output:

```Binomial Coefficient of 5 and 2 is : 10
Binomial Coefficient of 15 and 9 is : 5005
```

Example 2 :

 `// Java code to show implementation of``// binomial(int n, int k) method of Guava's``// IntMath class``import` `java.math.RoundingMode;``import` `com.google.common.math.IntMath;`` ` `class` `GFG {`` ` `    ``static` `int` `findBinomial(``int` `n, ``int` `k)``    ``{`` ` `        ``try` `{``            ``// Using binomial(int n, int k)``            ``// method of Guava's IntMath class``            ``// This should throw "IllegalArgumentException"``            ``// as k < 0``            ``int` `ans = IntMath.binomial(n, k);`` ` `            ``// Return the answer``            ``return` `ans;``        ``}``        ``catch` `(Exception e) {``            ``System.out.println(e);``            ``return` `-``1``;``        ``}``    ``}`` ` `    ``// Driver code``    ``public` `static` `void` `main(String args[])``    ``{``        ``int` `n = ``5``;``        ``int` `k = ``7``;`` ` `        ``try` `{`` ` `            ``// Function calling``            ``findBinomial(n, k);``        ``}``        ``catch` `(Exception e) {``            ``System.out.println(e);``        ``}``    ``}``}`

Output:

```java.lang.IllegalArgumentException: k (7) > n (5)
```

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