1.11 Class Number public  abstract class  java.lang.
Number extends  java.lang.
Subclasses of Number must provide methods to convert the represented numeric value to int, long, float, and double. The numeric value represented by this object is returned after conversion to type double. The numeric value represented by this object is returned after conversion to type float. The numeric value represented by this object is returned after conversion to type int. The numeric value represented by this object is returned after conversion to type long.