# Java Program - Cube Root of a Number

If a number is multiplied by itself two times (n*n*n), the final number will be the cube of that number and finding the cube root of a number is inverse operation of cubing the number. If x is the cube root of y, it can be expressed as below: Alternatively, it can also be expressed as:

x3 = y

### Method 1: Using cbrt() method of Java Math Class

The cbrt() method of Java Math class can be used to return cube root of a number.

```import java.lang.Math;

public class MyClass {
public static void main(String[] args) {
double x = 64;
double y = 125;

//cbrt() takes double datatype as argument
double x1 = Math.cbrt(x);
double y1 = Math.cbrt(y);
System.out.println("Cube root of " + x + " is " + x1);
System.out.println("Cube root of " + y + " is " + y1);
}
}
```

The above code will give the following output:

```Cube root of 16.0 is 4.0
Cube root of 25.0 is 5.0
```

### Method 2: Using pow() method of Java Math Class

The pow() method of Java Math class can also be used to calculate cube root of a number.

```import java.lang.Math;

public class MyClass {
public static void main(String[] args) {
double x = 64;
double y = 125;

//pow() takes double datatype as argument
double x1 = Math.pow(x, 1/3.);
double y1 = Math.pow(y, 1/3.);
System.out.println("Cube root of " + x + " is " + x1);
System.out.println("Cube root of " + y + " is " + y1);
}
}
```

The above code will give the following output:

```Cube root of 64.0 is 3.9999999999999996
Cube root of 125.0 is 4.999999999999999
```

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