Page 73 | CodeGym online Java course - Help

Jack Tec
Level 0
Question about the task Snake (Part 9/20)
Games, Level 0, Lesson 1
Under discussion
could anybody help please where is the bug in my code ?
6/13/21
856views
2comments
0
Xavier
Level 17
Pearland
Question about the task Food
Java Core, Level 4, Lesson 4
Under discussion
It passed the verification, but I don't understand how.After completing the first two requirements, I just started trying different things. I started going through the description rather than the requirements and added food.onSelect(); food.onEat(); in the foodMethods method to see if the third requirement would pass, and the entire exercise passed. Wh
6/11/21
837views
5comments
0
John
Level 17
Mansfield
Question about the task OOP: Fix inheritance problems
Java Core, Level 5, Lesson 2
Resolved
Bad operand types Whats wrong with the return statement of my finger's containBones () method?
6/12/21
645views
1comment
0
Zach
Level 22
Fort Collins
Question about the task In the blue depths of the stack trace…
Java Syntax, Level 9, Lesson 2
Under discussion
I printed out each element of the array. What do they all represent?Why is the answer not 12 for each of the things in the array?
6/11/21
485views
1comment
0
John
Level 17
Mansfield
Question about the task Food
Java Core, Level 4, Lesson 4
Under discussion
Confused of what's happening I just finished the task and review it, I found out that there is a Creation of Selectable interface in the main, how was that even possible? i think you can't create an object of an interface
5/31/21
629views
20comments
0
Dan Shirley
Level 2
Zion
Question about the task 2 + 3 = 5
Java Syntax, Level 0, Lesson 8
Under discussion
can i have a refund not great. cant follow along and code. had a lot of momentum and the teaching style is not for me.
6/10/21
717views
1comment
0
ImDevin
Level 15
Old Town
Under discussion
benefit of this setup (classes within an interface)?Classes in an Interface (I'm quite sure I haven't seen this before). What is the purpose or benefit of doing it this way vs. having it outside of the interface and implementing the interface?
6/10/21
603views
2comments
0
Wojtek
Level 23
Solec-Zdroj
Question about the task Find all the files
Java Collections, Level 1, Lesson 2
Under discussion
It seems to be good solution need hint
4/16/19
1737views
7comments
0
Andrei
Level 41
Question about the task 2048 (part 10)
Java Multithreading, Level 10, Lesson 15
Resolved
Copy-paste solution from mentor and validator does not accept. :| What?... It says I am failing the last condition? What am I failing at that because the methods are called with the game.
6/10/21
676views
3comments
0
Vatsal Patel
Level 15
Naperville
Question about the task OOP: Books
Java Core, Level 5, Lesson 2
Under discussion
GetBook is failing What am I doing wrong?
8/18/19
1515views
2comments
0
ImDevin
Level 15
Old Town
Resolved
Creating Object Hi all, I'm trying to understand the logic on creating object and would appreciate it if someone can offer a clear explanation on the following example. My question is on line 24 & 25. From what I understand, this is using user-defined data type, BodyPart and assigning the return value of ro
6/4/21
558views
4comments
0
ImDevin
Level 15
Old Town
Resolved
why is this allowed?this is from Java Core Level 3 Lesson 2, Beer part 2 Recovery. really want to know why this is allowed in Line 10 --> Drink beer = new AlcoholicBeer(); Drink is an interface, but here it's used as a Reference type. How is this possible? Someone did ask this question, but I could not und
5/28/21
547views
2comments
0
ImDevin
Level 15
Old Town
Question about the task Number of letters
Java Syntax, Level 10, Lesson 11
Resolved
Explanation on Line 37 Hi all, I'm trying to understand the solution given by CG. Can someone explain Line 37? why would Index ever be less than 0? Doesn't index starts at 0 and increase after that? Also, why is that needed? (I tried to run it commenting out L37, but it wouldn't). Thanks for the input.
5/18/21
546views
2comments
0
Yusuf el Turki
Level 5
Rhein
Question about the task Arithmetic mean
Java Syntax, Level 5, Lesson 5
Resolved
It is the first time that i saw a warning like that. Is there any problem with my codes?
6/9/21
611views
5comments
0
Liliane Top
Level 24
Amsterdam
Question about the task Determine the network address
Java Multithreading, Level 1, Lesson 2
Resolved
Where to get a deeper understanding of what is done here?Basically 2 questions: 1) I do not understand how we compare two byte[]. What does it return. I'm looking for a detailed description of the calculation 2) To display the byte[] as a binary String there are parts in the code that I can't find the meaning of. What exactly are we doing in the print()??
2/1/21
1087views
13comments
0
Ryan Palmer
Level 20
Philadelphia
Question about the task Wine tasting
Java Core, Level 4, Lesson 8
Archived
Calling a method on a method? Hi all, I am curious about this portion of the code: public class Solution { public static void main(String[] args) { getDeliciousDrink().taste(); System.out.println(getWine().getCelebrationName()); System.out.println(getBubblyWine().getCelebrationName()); Sys
5/20/21
521views
5comments
0
David Close
Level 17
London
Question about the task Chicken factory
Java Core, Level 4, Lesson 6
Under discussion
method does not override or implement a method from a supertype.I am unsure on why the super.<> will not work, is it to do with not using an IDE instead of codegym? Am i meant to connect the separate chicken classes to the main? any help is appreciated.
1/21/21
628views
2comments
0
ImDevin
Level 15
Old Town
Resolved
creating separate files Hi all, quick question. task 1408 Chicken Factory has the last condition which says, 9. All the classes you create must be in separate files. I don't actually know how to create a separate file that shows on different tabs. Right now, there are only 2 tabs - Solution & Continent. Can anyone
6/9/21
595views
2comments
0
Andrei
Level 41
Question about the task Bit operations
Java Multithreading, Level 10, Lesson 6
Resolved
Why 1 2 4 8 16? Can someone please explain the algorithm? number = number | (number >> 1); number = number | (number >> 2); number = number | (number >> 4); number = number | (number >> 8); number = number | (number >> 16); return (number & ~(number >> 1));
6/8/21
759views
8comments
0
Thani
Level 2
Kampala
Question about the task Implement the print method
Java Syntax, Level 2, Lesson 1
Under discussion
Writing the for loop This is one is a little bit fuzzy,this is how I wrote my for loop, for(String s = 4) {}....can i get light on this one?
6/7/21
496views
1comment
0
Andrei
Level 41
Question about the task Smallest possible radix
Java Multithreading, Level 10, Lesson 2
Resolved
Why won't my version verify?Line 20 is not printing invalid when it should be. And I get the "If any exception has occurred, you need to catch it and not display the stack trace." message even though I changed it to Exception and still wouldn't pass that requirement.
6/7/21
892views
11comments
0
Andrei
Level 41
Question about the task Smallest possible radix
Java Multithreading, Level 10, Lesson 2
Resolved
Why is the codeline below not printing what I say when the condition is true? if (Pattern.matches("[^a-zA-z0-9]", args[0])) System.out.println("Invalid"); Where args[0] is 12AS08Z/
6/7/21
611views
2comments
0
Daniel
Level 41
Rybnik
Question about the task Adding a file to an archive
Java Collections, Level 1, Lesson 6
Under discussion
Red lights everywhere!It's my second approach - still all I can see is red light! Any sugesstions ?
6/3/21
904views
10comments
0
DarthGizka
Level 24
Wittenberg
Question about the task Shall we play?
Java Core, Level 6, Lesson 13
Resolved
task1627 fails despite correct output This problem concerns the fourth requirement: The run methods of all players who did not win (those who were interrupted) should display [getName() + ":lost"]. For example: [Gates:lost] Validation seems to be broken - the requirement is listed as failed even though the output is correct. Here's th
6/5/21
1112views
5comments
0
John
Level 17
Mansfield
Question about the task Chicken factory
Java Core, Level 4, Lesson 6
Under discussion
Cannot find symbol continent Why is this error keeps on showing?
6/2/21
841views
8comments
0
Josephine
Level 1
Normal
Question about the task MVC (part 8)
Java Multithreading, Level 4, Lesson 14
Under discussion
Can someone guide me The error says cannot find symbol symbol: method getAllUsers() location: class com.codegym.task.task36.task3608.big08.model.MainModel. getAllUsers() class is in UserDao class.i have included all packages.
6/2/21
866views
3comments
0
John
Level 17
Mansfield
Question about the task User, loser, coder and programmer
Java Core, Level 4, Lesson 8
Under discussion
My output is correct, what's wrong?failing the last 4 requirements, any suggestions? by the way im having thame right output
6/5/21
483views
1comment
0
Xavier
Level 17
Pearland
Question about the task Writing to a file from the console
Java Core, Level 3, Lesson 11
Under discussion
Not passing the 5th condition.Whenever I check the file, all of the input is sent on a new line, including "exit". I don't know what more to do.
5/18/21
525views
5comments
0
Lex Icon
Level 17
Sofia
Question about the task 20 words that start with the letter "L"
Java Syntax, Level 8, Lesson 8
Resolved
Please, help.Please, help.
12/8/20
842views
1comment
1
Gajenthira
Level 4
Under discussion
InteliJ IDEA plugin error Plugin funktioniert bei mir nicht. Als Fehlermeldung wird "Intellij IDEA version does not match plugin version. Download suitable plugin" angezeigt. Wie kann ich das Problem beheben
4/14/21
640views
3comments
0

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