Prices

Good task. I think comments whose are below each task and help section are huge part of this site. Sometimes you read task desription, write program a few hours, can't validate, and that is the time to look into this two places. In this task description was a little not accurate (like don't show quotes mark in arguments). It was confusion, I know it was before task (or tasks) with crud, but reading this task conditions I was thinking that we need be prepare for any amount of name parts and I wrote program ready for that. Second thing I learned it was amazing String.format additional features I didn't knew before. String.format("%-8s%-30s%-8s%-4s") - I didn't knew that we can decide lenght in this (Could we call it "syntactic sugar"?). Third thing I was confused - why last four condition are red and eX. Answer was simple. My mind somehow was dazzled and I tried run program with arguments: -c 19847 "Swim trunks, blue" 59.00 12 I wrongly asummed that this element must have initial id. Never mind, thank you all guys, we run forward every day. It's pleasure for me learn with you toghether. Sorry for my english. I thought that I must upgrade my leanguage too, and I need more english practice, and I'll want write more comments.

I feel that this exercise could do with some inputs and outputs to clarify some confusion. Hope it helps. input arguments -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket with reflection" 123456789 12345 -c "Snowboard jacket" 12345 1 output (with altered ids, manually & directly in file, so as to test incrementing indexes) 1#######Snowboard jacket with reflecti123456781234 12345678Snowboard jacket with reflecti123456781234 12345671Snowboard jacket with reflecti123456781234 12345673Snowboard jacket with reflecti123456781234 12345679Snowboard jacket with reflecti123456781234 12345678Snowboard jacket with reflecti123456781234 123456##Snowboard jacket##########12345###1### // added # instead of space because of commenting format on this site // notice that there shouldn't be a new line here // notice that you shouldn't expect that the last index is the greatest (maybe, not necessary?) // notice trimmed data from input to output, based on mentioned limits

What would happen with the given solution by CodeGym if the text file is empty? According to my test it will fail.

Wow, really tough exercise. Some of the requirements mislead me: In condition nr. 4: the quotation marks made me think that "-c productName price quantity" is the entered program argument, but it is entered without the quotation marks (big difference - array with 4 slots instead of one slot) For me, it wasn't clear if i should write the code for one set of arguments or multiple sets. (It's just for one!) And you have to check for args length to validate, even if other if - statements logically include this requirement. Still a really nice, challenging exercise. I'd love to know how other people solved this task.

The example output is confusing... Is 198479 the ID that follows 19847?

For requirement 4 I'm getting the following recommendation message from the mentor: CodeGym security exception. You are performing a forbidden or potentially dangerous operation. When I run the task on IntelliJ the end result is as expected. Where does this security exception happens?

I don't have a clue why this isn't passing the test. It seems to work flawlessly with a test file. Please help me out here.

I have a question regarding this task and possibly the other Prices task and it is: In the args, are the values string values that contains 30 characters for productName, 8 in price, which includes the period, and 4 for quantity; and that if the string are not the mentioned lengths they have been padded out with spaces to fill the character length. And we have to add in the values without such spacing into the file. Am I correct?