# Java Guava | sqrt(int x, RoundingMode mode) method of IntMath Class

The method sqrt(int x, RoundingMode mode) of Guava’s IntMath class returns the square root of x, rounded with the specified rounding mode.

Syntax:

```public static int sqrt(int x, RoundingMode mode)
```

Exceptions:

• IllegalArgumentException: if x < 0.
• ArithmeticException: if mode is RoundingMode.UNNECESSARY and sqrt(x) is not an integer.

#### Enum RoundingMode

Enum Constant Description
CEILING Rounding mode to round towards positive infinity.
DOWN Rounding mode to round towards zero.
FLOOR Rounding mode to round towards negative infinity.
HALF_DOWN Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round down.
HALF_EVEN Rounding mode to round towards the “nearest neighbor” unless both neighbors are equidistant, in which case, round towards the even neighbor.
HALF_UP Rounding mode to round towards “nearest neighbor” unless both neighbors are equidistant, in which case round up.
UNNECESSARY Rounding mode to assert that the requested operation has an exact result, hence no rounding is necessary.
UP Rounding mode to round away from zero.

Below given are some examples to understand the implementation in a better way :

Example 1:

 `// Java code to show implementation of ` `// sqrt(int x, RoundingMode mode) 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` `x1 = ``226``; ` ` `  `        ``// Using sqrt(int x, RoundingMode mode) ` `        ``// method of Guava's IntMath class ` `        ``// The RoundingMode HALF_EVEN rounds towards ` `        ``// the nearest neighbor unless both neighbors ` `        ``// are equidistant, in which case, round towards ` `        ``// the even neighbor. ` `        ``int` `ans1 = IntMath.sqrt(x1, ` `                                ``RoundingMode.HALF_EVEN); ` ` `  `        ``System.out.println(``"Square root of x1 is: "` `                           ``+ ans1); ` ` `  `        ``int` `x2 = ``154``; ` ` `  `        ``// Using sqrt(int x, RoundingMode mode) ` `        ``// method of Guava's IntMath class ` `        ``// The RoundingMode FLOOR rounds towards ` `        ``// negative infinity. ` `        ``int` `ans2 = IntMath.sqrt(x2, ` `                                ``RoundingMode.FLOOR); ` ` `  `        ``System.out.println(``"Square root of x2 is: "` `                           ``+ ans2); ` `    ``} ` `} `

Output:

```Square root of x1 is: 15
Square root of x2 is: 12
```

Example 2:

 `// Java code to show implementation of ` `// sqrt(int x, RoundingMode mode) 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` `x1 = -``65``; ` `        ``try` `{ ` `            ``// Using sqrt(int x, RoundingMode mode) ` `            ``// method of Guava's IntMath class ` `            ``// The RoundingMode HALF_EVEN rounds towards ` `            ``// the nearest neighbor unless both neighbors ` `            ``// are equidistant, in which case, round towards ` `            ``// the even neighbor. ` ` `  `            ``// This should throw "IllegalArgumentException" ` `            ``// as x1 < 0 ` `            ``int` `ans1 = IntMath.sqrt(x1, ` `                                    ``RoundingMode.HALF_EVEN); ` `        ``} ` `        ``catch` `(Exception e) { ` `            ``System.out.println(e); ` `        ``} ` `    ``} ` `} `

Output:

```java.lang.IllegalArgumentException: x (-65) must be >= 0
```

My Personal Notes arrow_drop_up Check out this Author's contributed articles.

If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.

Article Tags :
Practice Tags :

Be the First to upvote.

Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.