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StrictMath cbrt() Method in Java
• Last Updated : 19 Jul, 2018

The java.lang.StrictMath.cbrt() is an inbuilt method in Java which is used to return the cube root of a given double value. The method shows three special results:

• The result is a zero with the same sign as the argument when the given argument is zero.
• The result is infinity with the same sign of argument when the argument is infinite.
• The result is NaN when the given argument is NaN.

Syntax:

`public static double cbrt(double num)`

Parameters: This method accepts one parameter num which is of double type whose cube root is required to be found.

Return Value : The method returns the cube root of num.

Below programs illustrate the java.lang.StrictMath.cbrt() method:
Program 1:

 `// Java praogram to illustrate the``// java.lang.StrictMath.cbrt()``import` `java.lang.*;`` ` `public` `class` `Geeks {`` ` `    ``public` `static` `void` `main(String[] args)``    ``{`` ` `        ``double` `val1 = ``8.05``, val2 = ``27``, val3 = ``0``;`` ` `        ``// It returns the cube root of a double value``        ``double` `cbrtvalue = StrictMath.cbrt(val1);``        ``System.out.println(``"Cube root of "``+val1+``                                  ``" = "` `+ cbrtvalue);`` ` `        ``cbrtvalue = StrictMath.cbrt(val2);``        ``System.out.println(``"Cube root of "``+val2+``                                  ``" = "` `+ cbrtvalue);`` ` ` ` `        ``cbrtvalue = StrictMath.cbrt(val3);``        ``System.out.println(``"Cube root of "``+val3+``                                  ``" = "` `+ cbrtvalue);`` ` `    ``}``}`
Output:
```Cube root of 8.05 = 2.0041580161269152
Cube root of 27.0 = 3.0
Cube root of 0.0 = 0.0
```

Program 2:

 `// Java praogram to illustrate the``// java.lang.StrictMath.cbrt()``import` `java.lang.*;`` ` `public` `class` `Geeks {`` ` `    ``public` `static` `void` `main(String[] args)``    ``{`` ` `        ``double` `val1 = -``8.05``, val2 = ``128``, val3 = ``0``;`` ` `        ``// It returns the cube root of a double value``        ``double` `cbrtvalue = StrictMath.cbrt(val1);``        ``System.out.println(``"Cube root of "``+val1+``                                  ``" = "` `+ cbrtvalue);`` ` `        ``cbrtvalue = StrictMath.cbrt(val2);``        ``System.out.println(``"Cube root of "``+val2+``                                  ``" = "` `+ cbrtvalue);`` ` `        ``cbrtvalue = StrictMath.cbrt(val3);``         ``System.out.println(``"Cube root of "``+val3+``                                  ``" = "` `+ cbrtvalue);`` ` `    ``}``}`
Output:
```Cube root of -8.05 = -2.0041580161269152
Cube root of 128.0 = 5.039684199579493
Cube root of 0.0 = 0.0
```

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