Number.doubleValue() has the following syntax.
public abstract double doubleValue()
In the following code shows how to use Number.doubleValue() method.
/* w w w . j av a 2s . com*/ public class Main { public static void main(String[] args) { // get a number as integer Number x = new Integer(123456); // get a number as float Number 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()); } }
The code above generates the following result.