import java.math.BigDecimal;

public class Test {
  public static void main(String[] args) {
    double oldBalance = 1873.12;
    BigDecimal ob = new BigDecimal(oldBalance);
    System.out.println("Old bal    " + ob);
    double reduction = 19.99;
    BigDecimal r = new BigDecimal(reduction);
    System.out.println("Expense    " + r);
    BigDecimal exactDiff = ob.subtract(r);
    System.out.println("exact      " + exactDiff);
    System.out.println("calculated " + new BigDecimal(oldBalance-reduction));
    double expected = 1853.13;
    BigDecimal e = new BigDecimal(expected);
    System.out.println("expected   " + e);
    System.out.println("reported   " + "1853.13000000000000000000");
    System.out.println("nextUp     " + new BigDecimal(Math.nextUp(expected)));
    System.out.println("nextDown   " + new BigDecimal(Math.nextDown(expected)));
  }
}