Round, ceil, floor a value in Java

//from w  w w .  j  a v a  2s .  c  om
public class Main {
  public static void main(String[] args) {
    double x = 2.4;
    double y = 9.5;
    double z = -1.3;

    System.out.println("round(x) = " + Math.round(x));
    System.out.println("round(y) = " + Math.round(y));
    System.out.println("round(z) = " + Math.round(z));
    System.out.println();
    System.out.println("ceil(x) = " + Math.ceil(x));
    System.out.println("ceil(y) = " + Math.ceil(y));
    System.out.println("ceil(z) = " + Math.ceil(z));
    System.out.println();
    System.out.println("floor(x) = " + Math.floor(x));
    System.out.println("floor(y) = " + Math.floor(y));
    System.out.println("floor(z) = " + Math.floor(z));
    System.out.println();
    System.out.println("rint(x) = " + Math.rint(x));
    System.out.println("rint(y) = " + Math.rint(y));
    System.out.println("rint(z) = " + Math.rint(z));
  }
}