Java.lang.Number.doubleValue() Method

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Description

The java.lang.Number.doubleValue() method returns the value of the specified number as a double. This may involve rounding or truncation.

Declaration

Following is the declaration for java.lang.Number.doubleValue() method

public abstract double doubleValue()

Parameters

  • NA

Return Value

This method returns the numeric value represented by this object after conversion to type double.

Exception

  • NA

Example

The following example shows the usage of lang.Number.doubleValue() method.

package com.tutorialspoint;

public class NumberDemo {

   public static void main(String[] args) {

      // get a number as integer
      Integer x = new Integer(123456);

      // get a number as float
      Float y = new Float(9876f);

      // print their value as double
      System.out.println("x as integer :" + x
              + ", x as double:" + x.doubleValue());
      System.out.println("y as float::" + y
              + ", y as double:" + x.doubleValue());

   }
}

Let us compile and run the above program, this will produce the following result:

x as integer :123456, x as double:123456.0
y as float::9876.0, y as double:123456.0



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