// operators/Underscores.java // (c)2016 MindView LLC: see Copyright.txt // We make no guarantees that this code is fit for any purpose. // Visit http://OnJava8.com for more book information. public class Underscores { public static void main(String[] args) { double d = 341_435_936.445_667; System.out.println(d); int bin = 0b0010_1111_1010_1111_1010_1111_1010_1111; System.out.println(Integer.toBinaryString(bin)); System.out.printf("%x\n", bin); long hex = 0x7f_e9_b7_aa; System.out.printf("%x\n", hex); } } /* Output: 3.41435936445667E8 101111101011111010111110101111 2fafafaf 7fe9b7aa */