Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
Last week, we had the author of TDD for a Shopping Website LiveProject. Friday at 11am Ranch time, Steven Solomon will be hosting a live TDD session just for us. See for the agenda and registration link
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Jeanne Boyarsky
  • Tim Cooke
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Frits Walraven
Bartenders:
  • Piet Souris
  • Himai Minh

Confused about Dan's Exam #1 Question #27

 
Ranch Hand
Posts: 81
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
The answer to the following question is d. Run-time error. Can someone please explain this to me? I think that the last array element that is accessed is 5 which is 'F'. Doesn't the "i++" get evaluated before the comparison so that the output would be BCDEF? Don't we break out of the while loop before an access of arg[6] is attempted?
Thank you! These exams are very good. Very hard. They seem much harder than the JQ+ exams to me and the explanations are excellent.
Question 27
class JMM101 {
public static void main(String[] args) {
int i = 0;
while (i++ < args.length) {
System.out.print(args[i]);
}}}
java JMM101 A B C D E F
What is the result of attempting to compile and run the program using the specified command line?
a. Prints: JMM101ABCDEF
b. Prints: ABCDEF
c. Compile-time error
d. Run-time error
e. None of the above
 
Robin Clark
Ranch Hand
Posts: 81
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Now that I've posted my question and looked at it again, I totally understand what is happening. I understand it now. This is such an awesome question!
 
I will open the floodgates of his own worst nightmare! All in a tiny ad:
free, earth-friendly heat - a kickstarter for putting coin in your pocket while saving the earth
https://coderanch.com/t/751654/free-earth-friendly-heat-kickstarter
reply
    Bookmark Topic Watch Topic
  • New Topic