import visad.*;

public class dataex3 {
  public static void main (String arg[]) {
    try {

      Real a,b,c;
      a = new Real(10., 1.);
      b = new Real(255., 10.);
      c = (Real) a.add(b, Data.NEAREST_NEIGHBOR, Data.INDEPENDENT);
      System.out.println("sum = "+c);
      System.out.println("error of sum is="+c.getError().getErrorValue());

    } catch (Exception e) {System.out.println(e);}
  }
}