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In the previous article, I have explained about long data type.
In this article, I am going to explain and practically demonstrate float data type.
Java for Testers – float data type
float data type also stores the decimal values similar to double data type.
But the size of the float data type is 2 times smaller than the double data type.
i.e. float data type is single-precision 32 bit IEEE 754 floating-point and double data type is double-precision 64 bit IEEE 754 floating-point.
In general, we use double data type for storing the decimal values into a variable, but we may have to use float data type where we have to save memory.
Also, we have to add the letter f at the end of the value to make it a float type decimal literal.
For example:
float i = 9.63f;
In the above example, we have declared the variable i with float data type, and hence we are able to store the decimal values like 9.36 into the variable.
Also, observe that we have added a letter f to the value 9.63 to from float type integer literal value 9.63f.
Follow the below steps for practically implementing float data type in Java:
1) Let’s create a Java program and create a Demo class as shown below:
Note: If you are not aware of creating a Java project and a Class in Java, refer to our previous article – Creating a Java project in Eclipse IDE
2) Inside the main() method, let’s create a variable, declare the variable with float data type and assign the variable with a decimal value 9.36f as shown below:
3) Now print the value stored in the variable by printing the variable using the print statement as shown below:
4) Save the Project and click on the ‘Run’ button.
Observe that the Program got executed and the decimal value 9.36f stored in the variable i got printed as shown below:
Copy the above-explained code from the below section
public class Demo {
public static void main(String[] args) {
float i = 3.69f;
System.out.println(i);
}
}
Here concludes this article.
In the next article, I will explain the remaining things about data types.
Next Steps:
- > To learn more about Java, continue to the next post (Click on Next Post link below)
- > Check complete Java Tutorial Contents here (Click here)
Please leave your questions/comments/feedback below:
Happy Learning ?
Arun Motoori (www.QAFox.com)
On a mission to help the Testing Community in all possible ways.
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