Java Float doubleValue() method with Examples

by Online Tutorials Library July 22, 2022

Java Float doubleValue() method

The doubleValue() method of Java Float class returns a double value corresponding to this Float Object by widening the primitive values or in simple words by directly converting it to double via doubleValue() method .

Syntax:

Parameters:

Return Value:

This method returns the double value which has been converted from the float value of this object.

Example 1

 import java.lang.*;   public class FloatdoubleValueMethodExample1 {     public static void main(String[] args) {          float float_obj = 55.055F;            Float float_obj1= new Float(float_obj);          //widening the float object         double double_obj= float_obj1.doubleValue();          System.out.println(“New value is = “+double_obj);     } } 

Test it Now

Output:

New value is = 55.05500030517578

Example 2

 import java.lang.*;  public class FloatdoubleValueMethodExample2 {      public static void main(String[] args) {          //passing negative integer         float f1 = -5558979879798787667657678686875698796.63655768769857694f;         Float f2= new Float(f1);         System.out.println(“Float value = “+f2);                  //Converting float into Double           Double d1= f2.doubleValue();         System.out.println(“Double value  = “+d1);     } } 

Test it Now

Output:

Float value = -5.55898E36 Double value  = -5.558980006458046E36

Example 3

 import java.lang.*;  public class FloatdoubleValueMethodExample3 {      public static void main(String[] args) {           float f1 = 96.67f;                           //Converting float into Double         Double d1= f1.doubleValue();                 System.out.println(“Double value  = “+d1);     } } 

Test it Now

Output:

Error:(13, 22) java: float cannot be dereferenced

Here double is a primitive data type its object can’t be used to call the Float class method. If done so it will give the above error.

Next TopicJava Float

byteValue()compare compareTo()doubleValue()equals()float floatToIntBits()floatToRawIntBits()floatValue()hashcode()intBitsToFloat()intValue()java longValue()parseFloat()shortValue()valueOf()

Java Float doubleValue() method with Examples

Java Float doubleValue() method

Syntax:

Parameters:

Return Value:

Example 1

Example 2

Example 3

Java Collections sort() Method with Examples

Java Float isFinite() method with Examples

You may also like