Convert double to float in Java

Tags: double float Convert

In this Java core tutorial, we learn how to convert double value into float value in Java via different solutions.

How to cast double to float value

In Java we can cast a double value into a float value as the following Java program.

ConvertDoubleToFloatExample1.java 

public class ConvertDoubleToFloatExample1 {
    public static void main(String[] args) {
        double value1 = 123.45;
        float value2 = (float)value1;

        System.out.println("double value:" + value1);
        System.out.println("float value:" + value2);
    }
}
The output is: 
double value:123.45
float value:123.45

Using Double.floatValue() method to return float value from a Double object

With a Double object in Java we can use the Double.floatValue() method to return float value as below.

ConvertDoubleToFloatExample2.java 

public class ConvertDoubleToFloatExample2 {
    public static void main(String[] args) {
        Double value1 = Double.valueOf(99.9);
        float value2 = value1.floatValue();

        System.out.println("double value:" + value1);
        System.out.println("float value:" + value2);
    }
}
The output is: 
double value:99.9
float value:99.9

Happy Coding 😊

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