java.lang.Math.ceil(double a) java.lang.Math.cbrt(double a) java.lang.Math.copySign(double magnitude, double sign) java.lang.Math.ceil(double a) package com.codingdict; import java.lang.*; public class MathDemo { public static void main(String[] args) { // get two double numbers double x = 125.9; double y = 0.4873; // call ceal for these these numbers System.out.println("Math.ceil(" + x + ")=" + Math.ceil(x)); System.out.println("Math.ceil(" + y + ")=" + Math.ceil(y)); System.out.println("Math.ceil(-0.65)=" + Math.ceil(-0.65)); } } java.lang.Math.cbrt(double a) java.lang.Math.copySign(double magnitude, double sign)