Java Examples

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:

cube root

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




5