How to square a number in Java?

In a programming language, mathematics plays a vivo 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:

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:

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 Find HP Laptop Battery Model Number

While buying an HP laptop, most users consider battery timing as one of their top priorities so that they can use it anywhere they go. But the bitter truth is that the battery timing starts to diminish after using it for a long time and eventually stops working. In such a scenario, you have only two options: the first is to plug your laptop into the power source permanently, and the second is to buy a new battery.

The major issue with the first option is that there will be no difference between the laptop and a desktop computer when you always plug in, and it snatches away your freedom to use it anywhere else. So, the second method is more recommended, but you need to find the exact HP Laptop battery model number, and if you don’t know how you can do that, then we will be discussing some of the methods in this article.

Finding the HP Laptop Battery Model Number from the Bottom of the Laptop

One of the easiest methods to check the battery model of the HP laptop is by checking its bottom, where you will either see a sticker or text engraved on the battery. But if you are using an old laptop, this writing may no longer be readable; that is why we are providing another method to read a battery model.

Finding the HP Laptop Battery Model Number using the Windows Settings

In this method, you need to go to the “System Settings” and select the “About” option. You can do that by clicking on the “Start Button” first, as shown below:

Select the “System” option from all the options shown below:

Clicking on it will give you multiple options, and if you don’t know where you can find those settings that you are looking for, then you can type them in the search bar. But for this, you need to select the “About” option that you can find on the last.

This will provide you with the important laptop information you can use and buy the battery accordingly.

This will provide you with the laptop device information such as Device ID, Product ID. Now you can use the information to get the required battery for your laptop by providing the details to the vendor.

Checking the Battery Model using a Third-Party Application

There are lots of applications available that can provide you with the battery model along with other important information. Still, the one that we are using is the Battery Info View. After downloading and installing it, you need to open this application, and it will automatically analyze the battery information and provide you with the details as shown below.

Conclusion

The laptop battery is one of the essential parts of the laptop as it gives you the freedom to use it anywhere you like for some time without getting worried. But the battery timing diminishes, so you need to buy a new one to increase the battery timing. So, if you own an HP laptop and want to find the battery model number, we have discussed some of the easiest ways to do that in this article.