How to Use the Suffix F in Java

The decimal values in Java are by default double values. When we only require float values, we must tell the compiler that it is a float value.

This tutorial demonstrates the use of the suffix f in Java.

Use f With a Value to Tell the Compiler It Is a Float Value in Java

We use the suffix f after the value for that purpose. The value with the suffix f will be identified as a float from the compiler.

Once we define the variable in Java, we have to specify the data type of that variable, but if a float is not predefined, we can use the suffix f to tell the compiler it is a float value.

Example:

public class Java_F {
  public static void main(String args[]) {
    float num1 = 5.5f;
    double num2 = 5f;

    // Check the type of the variables above
    System.out.println("The Data Types for the values are: ");
    System.out.println(((Object) num1).getClass().getSimpleName() + " = " + num1);
    System.out.println(((Object) num2).getClass().getSimpleName() + " = " + num2);
    System.out.println(((Object) 5f).getClass().getSimpleName() + " = " + 5f);
  }
}

Output:

The Data Types for the values are:
Float = 5.5
Double = 5.0
Float = 5.0

The code above uses f with predefined variables and undefined values. This example checks for the data types of given values.