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Questions about tasks
Hot
Valérie Coudrain
Level 11
Zurich
Under discussion
Java core tasks not appearing
I completed the first quest and wanted to start the Java Core part, but the tasks are not appearing. I get a blank page with the message "NO CLASSES TO DISPLAY". I guess, it is because I have the French version. How can I change from the fr tasks to the English one?
08.02.2020
769
views
0
comments
0
Manvendra Singh Chauhan
Level 0
Bhopal
Under discussion
subscription
is this course free or I have to take a subscription?
10.02.2020
793
views
0
comments
0
vishesh yadav
Level 7
Mumbai
Under discussion
need help!
hello sir i m not comfortable with the codegym app in mobile. It's been tedious to complete tasks on mobile. So is there any way i can use codegym with provide tasks to use on my pc for free. That would be very helpful. Thank you
10.02.2020
687
views
0
comments
0
Mihaela Miculescu
Level 2
London
Question about the task
Minimum of three numbers
Java Syntax
,
Level 2
,
Lesson 8
Under discussion
what is the meaning of the question mark between a < b ? a : b
int m1 = a < b ? a : b ...what is the meaning of the question mark between a < b ? a : b
01.12.2020
520
views
4
comments
0
romeo
Level 5
Paramaribo
Question about the task
Implement the fight method
Java Syntax
,
Level 5
,
Lesson 5
Resolved
Task still not verifying??
cat1.fight(cat2) is returning (true) cat2.fight(cat1) is returning (false) how is the last condition still not being met??
01.06.2019
1766
views
7
comments
0
Mario Kausche
Level 8
Hamburg
Resolved
Thema Arrays / Erstellen / beschreiben
Eine Sache erschließt sich mir nicht ganz ... vielleicht kann das ja jemand kurz erklären. Es geht um eine Aufgabe in der Stufe 5, wo sich mir etwas nicht ganz erschließt. int[] data = new int[N]; for(int i = 0; i < N; i++){ data[i] = Integer.parseInt(reader.readLine());
30.12.2020
294
views
2
comments
0
Djole
Level 41
Belgrade
Question about the task
Changing punctuation marks
Java Core
,
Level 9
,
Lesson 5
Resolved
seems like simple question, still not able to pass it.
import java.io.*; public class Solution { public static void main(String[] args) throws IOException { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String a = br.readLine(); String b = br.readLine(); br.close(); BufferedReader
11.04.2019
1457
views
8
comments
0
Szymon
Level 41
Warsaw
Question about the task
CRUD
Java Core
,
Level 7
,
Lesson 10
Under discussion
any advice guys?
not the cleanest code i ever made but the logic seems correct to me
16.12.2020
397
views
4
comments
0
anupam jha
Level 7
Question about the task
Implement the fight method
Java Syntax
,
Level 5
,
Lesson 5
Under discussion
plus conundrum
why to use plus after age weight etc???is it a different variable from the one defined in class Cat??Thanks in advance !
20.12.2020
460
views
0
comments
0
Jonathan
Level 12
Esslingen
Under discussion
Auto renewal feature ausstellen
Wie kann ich aus stellen, dass sich mein Abbonement automatisch verlängert? Unter meine Abbonements --> verwalten, kann ich nur das Abbonement verlängern...
26.09.2020
280
views
0
comments
0
程序人生
Level 1
Langfang
Under discussion
how install svn plugin in eclipse ide?
I want to install svn plugin ,how install svn plugin in eclipse ide? thanks
23.05.2020
537
views
0
comments
0
Adam Szczepański
Level 17
Sarnaki
Under discussion
What's wrong with my checkCollision() method?
What's wrong with my checkCollison(GameObject) method? It doesn't meet second and third requirement. By the way - the game works. Here's my code: public boolean checkCollision(GameObject field) { for (GameObject part : snakeParts) { if (field.x == part.x && field.y == p
10.10.2020
440
views
0
comments
0
christopher Okorie
Level 2
Orlando
Under discussion
makeing graphics lesson
do any lessons go over making graphics and moving them and also making hitboxes
22.10.2020
389
views
0
comments
0
Kakashi12082007
Level 3
Under discussion
je ne peux pas installer.
Je ne peux pas installer Java JDK 8 car je suis sur mobile Android. Auriez-vous une solution?
14.11.2020
418
views
0
comments
0
alex ayers
Level 0
Under discussion
have to write a java gui program in jgrasp
hey I'm a tad bit stuck is there a way that I can make this window smaller when it pops up I'm trying to get it into grid layout so it doesn't take up so much of the screen i need to add a mutually exclusive option where the customer can get a car pickup service for $10 or they'll wait for service
05.11.2020
1301
views
0
comments
0
Igor Karlik
Level 0
Under discussion
Trouble with subscriptions
I've bought one year subscription but i cant find my account in which i've activated it, no matter i log in via Google or standard signing via Gmail. Why i didnt get any payment confirmation?
07.12.2020
442
views
0
comments
0
°-°
Level 3
Seattle
Under discussion
why i cant submit task on level 3 lesson 01?
btw, i have no subscription codegym yet. even i have click verification button and there's nothing changes. i have not got the dark matter yet. 😥
23.12.2020
279
views
0
comments
0
anupam jha
Level 7
Under discussion
static
when to use static variables/methods...?
27.12.2020
234
views
0
comments
0
crispr_cast9
Level 9
Saint Petersburg
Question about the task
Hello, StarCraft!
Java Syntax
,
Level 3
,
Lesson 4
Under discussion
Hello everyone. Why I can,t to create objects in array? In console I see {UnitZerg0...UnitZerg4}. I understand that array contents referenses to created objects. This code is in main method. Next to classes was creating by using same code, and I was seeing same output. I started in Java in last week
Zerg[] zz; zz = new Zerg[5]; Protoss[] pp; pp = new Protoss[3]; Terran[] tt; tt = new Terran[4]; int x = 0; for(x = 0; x < 5; x++){ zz[x] = new Zerg(); zz[x].name = "UnitZerg" + x; System.out.prin
22.12.2020
350
views
2
comments
0
anupam jha
Level 7
Under discussion
declaration
m a bit confused.sometimes i declare variables inside main method sometimes not.same with method...where to declare variables n methods.any rule??
29.12.2020
324
views
1
comment
0
Vitalina
Level 20
Question about the task
Factory method pattern
Java Core
,
Level 6
,
Lesson 13
Resolved
Please gelp me! Last condition..
What's wrong? I don't understand
29.12.2020
294
views
2
comments
0
Liliane Top
Level 24
Amsterdam
Question about the task
Transactionality
Java Core
,
Level 7
,
Lesson 10
Resolved
Why do I fail the test?
Is si because I use Scanner and I should use a bufferedReader? if so why? And what is the difference between: allLines.removeAll(linesForRemoval); && linesForRemoval.clear(); ??
29.12.2020
433
views
5
comments
0
Liliane Top
Level 24
Amsterdam
Question about the task
Superfluous synchronization
Java Core
,
Level 7
,
Lesson 10
Under discussion
Why is he readObject() not synchronized?
I thought that you have to synchronize all methods that involve fields that can be accessed by several threads at the same time. the writeObject is synchronized but the readObject is not this could cause problems as you could read the wrong value... where do I go wrong in my thinking?
29.12.2020
557
views
4
comments
0
LennyMan
Level 25
Lucca
Question about the task
File in a static block
Java Core
,
Level 5
,
Lesson 12
Resolved
My version should be correct
Its working but not validate, i seen the solution and its quite different from mine,but the output should be the same. im just wondering if my version it's legal and correct even if its not validate. Please let me know if there are some important mistake.
29.12.2020
275
views
2
comments
0
Justin Johnson
Level 31
Clearwater
Question about the task
Restaurant (part 22)
Java Multithreading
,
Level 9
,
Lesson 15
Under discussion
timing out....please help
cant get it to validate
18.12.2020
422
views
2
comments
0
Vo
Level 41
Sofia
Question about the task
Adding a file to an archive
Java Collections
,
Level 1
,
Lesson 6
Resolved
Why is my zip file getting corrupted?
Even if I exclude the part in which I add files to the new created zip, it gets corrupted. Upon opening the archive I get "Error occurred" message. package com.codegym.task.task31.task3105; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOExc
29.12.2020
639
views
1
comment
0
Marvin Ellis
Level 7
Peoria
Question about the task
Playing Javarella
Java Syntax
,
Level 7
,
Lesson 9
Resolved
Array Issue
I think I have the premise down correctly. I am sorting the 3 list inside of 1 for loop but I am getting array index and range errors. Why is that?
28.12.2020
276
views
2
comments
0
Josephine
Level 26
Normal
Question about the task
Replacing numbers
Java Core
,
Level 9
,
Lesson 11
Archived
My code works perfectly in InteliJ.why it is not passing.Someone help
My code works perfectly in InteliJ.Someone please help
24.12.2020
285
views
3
comments
0
Liliane Top
Level 24
Amsterdam
Question about the task
CRUD 2
Java Core
,
Level 7
,
Lesson 10
Resolved
The allPeople list is volatile what does the synchronized(allPeople) add to this?
in the code we have: public static volatile List allPeople = new ArrayList<>(); and we have to add synchronized(allPeople) to the each case: case "-c": synchronized (allPeople) { for (int i = 1; i < args.length; i = i + 3) { creat
28.12.2020
249
views
2
comments
0
Rich
Level 23
San Diego
Question about the task
OOP: Fix inheritance problems
Java Core
,
Level 5
,
Lesson 2
Under discussion
last requirement
All fingers come up as artificial for some reason. little hint pls...
27.12.2020
266
views
1
comment
0
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