How to square a number in Java?

In a programming language, mathematics plays a vital role. A programmer must be good at mathematics to build strong logic. Squaring a number is one of the basic functions of programming languages. In this article, we will demonstrate different possibilities to find the square number in Java. The following post will have the outcomes as follows:

Use the Math.pow() method to square a number
Multiply a number by itself to get the square

How to square a number in Java

In Java, when a number is multiplied by itself it is said to be the square of a number. Java uses two ways through which the square of a number can be found.

Method 1: Using the Math.pow() method to get the square

Java supports various methods that can be used to get the square of a number. Among these methods, Math.pow() is dedicated to finding the square of a number. This method only returns a double data type value.

Syntax:

Math.pow(number, 2)

This syntax shows that the Math.pow method takes two arguments. The first argument is a number and the second argument is the power of the number which means the second method specifies the number of times a number can multiply by itself. We can use this method to find the 3rd and 4th power as well but to find the square of a number you need to give 2 as a second argument.

Code:

public class arry {
public static void main(String[] args) {
int d = 5;
double f;
f=Math.pow(d, 2);
System.out.println("The square of "+d+" = "+f);
}
}

In this code, we have declared an integer d and assigned it a value 5. After then, the Math.pow() method is applied to get the square of the integer “d”. The value of the square is stored in a variable “f”.

Output:

The output clearly shows that the Math.pow() method takes d (a variable that contains a value) and the power 2 as an argument whereas 2 represents the number of times d multiplied by itself. Then we finally got the required result.

Method 2: Multiplying the number by itself

The square of a number is basically the multiplication of the number by itself. Here, the example code describes how a number can be multiplied by itself to get the square:

Code:

public class arry {
public static void main(String[] args) {
int d = 5;
System.out.println("The square of "+d+" = "+d*d);
}
}

In this code, we have declared a variable d that contains a value 5. Then we multiply d by itself to get the square of 5.

Output:

This output shows that we get the square of a number by multiplying d by itself.

Here you go! Several methods are explained to find the square of a number.

Conclusion

In Java, we can find the square of a number by using the Math.pow() method. However, you can also multiply a number by itself to get the square. To find a square using the Math.pow() method, you need to pass the number and value “2” as arguments to the Math.pow() method. In this post, we have demonstrated the working and functionality of these two possible ways to get the square of a number in Java.

How to square a number in Java?