Help with these java statements

Question

Can someone help me understand the following :
"There are no errors but the loop terminates prematurely due to condition using the incorrect relational operator. The values of TotalVAT and TotalCosts will be 0.0."
double[] Costs = {10.00, 20.00, 30.00, 15.00};double TotalCost = 0.0;double TotalVAT = 0.0;for (int Count = 0; Count > Costs.length; Count++) { double VAT = Costs[ Count ] * 0.175; TotalVAT = TotalVAT + VAT; TotalCost = TotalCost + Costs[ Count ] + VAT;}
[\code]
Thank you,

Answer 1

  double[] Costs = {10.00, 20.00, 30.00, 15.00};
  double TotalCost = 0.0;
  double TotalVAT = 0.0;
  for (int Count = 0; Count > Costs.length; Count++)
    double VAT = Costs[ Count ] * 0.175;
    TotalVAT = TotalVAT + VAT;
    TotalCost = TotalCost + Costs[ Count ] + VAT;
  }"the loop terminates prematurely" = the loop ends too early,
it's not run as often as you think it would be. With loops that is
often either once too few or not at all, in this case the latter.
"due to condition using the incorrect relational operator" ->
relational operators are operators that compare numbers (or other
data), e.g. ==, !=, <, and >. There is only one relational operator
here, it's >.
For-loops work like this:
for (init; cond; inc)
init is the initialization, that's fine here: int Count = 0
cond is a condition that has to be met everytime the loop starts from
the beginning (not like in some other languages, where the condition is
the one that will lead to the end of the loop). So here it checks
whether Count > Costs.length is true and only then it will be executed.
That's of course nonsense - you want to repeat that loop while Count is
still less than Costs.length and you want to stop when it reaches
Costs.length or goes above it, not the other way around. You loop will
never execute at all! So simply replace the > with a <.
(inc is the incrementation, that's fine here, too.)
Say, who wrote that comment "There are no errors but the loop
terminates prematurely due to condition using the incorrect relational
operator. The values of TotalVAT and TotalCosts will be 0.0."? Was that
a contest about being as verbose and ununderstandable as possible?
A note: Only classes (and interfaces) start with capital letters. Use
lower case letters for variables (and methods and packages): costs,
totalCost, totalVAT, count, vat. (ALL CAPS are used for constants.)
Hope this helps,
Monika.