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Java 25
All quests
All levels
Any status
Questions about tasks
Hot
John
Level 17
Mansfield
Question about the task
Chicken factory
Java Core
,
Level 4
,
Lesson 6
Under discussion
cannot find symbol method getDescription ()
why can't i call super.getDescription?
6/2/21
593
views
4
comments
0
Daniel
Level 41
Rybnik
Question about the task
What's in the folder?
Java Collections
,
Level 1
,
Lesson 4
Under discussion
Need help
I think I need some help! Locally this code works great and exactly how it scholuld according to task conditions. Any advices ? hints ?
6/2/21
664
views
3
comments
0
Patrick Batterfly
Level 17
Livny
Question about the task
Kind Emma and the summer holidays
Java Syntax
,
Level 8
,
Lesson 8
Resolved
Please, I need help
I don't know why this doesn't work. I even tried to change comparison sign to another sides, but it still didn't help to move on. Please, tell me what i did wrong
6/2/21
721
views
7
comments
0
Gellert Varga
Level 23
Szekesfehervar
Question about the task
Chicken factory
Java Core
,
Level 4
,
Lesson 6
Resolved
I don't understand why not met 5. and 6. requirements
After many attempts, I don’t understand why it always reject requirements 5 and 6. Maybe I didn’t well understand something from the requirements, I don’t know. The program seems to be working.
2/19/21
844
views
7
comments
0
Daisy
Level 8
San Jose
Question about the task
Playing Javarella
Java Syntax
,
Level 7
,
Lesson 9
Under discussion
Help Please!
error: invalid method declaration; return type required printList(number1);
6/2/21
803
views
1
comment
0
Hisham Thabet
Level 8
Lahj
Resolved
The program won't compile! .also, I can't understand what the Codegym say "If we add a cat to a number, there is no automatic string conversion" can you explain for me? Thank you
Cat cat = new Cat(); int a = 5; String text = cat + a + "The cat is " + cat + a;
6/1/21
762
views
2
comments
0
Anonymous #10749591
Level 3
Question about the task
Our first converter!
Java Syntax
,
Level 2
,
Lesson 2
Under discussion
How is it wrong.
I wrote just as hinted. (9/5) first - the answer was wrong. then remove the bracket as in 9/5. again the last condition was unapproved because the answer was wrong. Then I wrote 9/5.0 as per the solution and only then was the answer right.
6/1/21
725
views
1
comment
0
Manav Dhote
Level 0
bhopal
Under discussion
language
how can I change language
4/25/20
978
views
2
comments
1
Zach
Level 22
Fort Collins
Question about the task
Most frequent bytes
Java Core
,
Level 8
,
Lesson 3
Under discussion
The error I'm getting is: Don't display the same byte several times. ???
How is it giving me this error? I even changed my output to a set so there shouldn't be any duplicates. Although the map should have solved this already. Thanks
6/1/21
719
views
1
comment
0
Akash sah
Level 8
Kathmandu
Question about the task
Implement the print method
Java Syntax
,
Level 2
,
Lesson 1
Under discussion
what is wrong in this code?
i tried new line but not works
2/8/19
2248
views
7
comments
0
Maxim Raitin
Level 20
Tomsk
Question about the task
Consecutive threads
Java Core
,
Level 6
,
Lesson 13
Under discussion
volatile - what is this?
Why we need volatile in variables?
6/1/21
672
views
1
comment
0
Dwight Burrow
Level 3
Minnetonka
Question about the task
Square of a number
Java Syntax
,
Level 1
,
Lesson 8
Under discussion
Did I miss something?
I'm not sure I learned anything about sqr(). I don't know anything about it or how it works or where I put it.
5/5/21
795
views
3
comments
0
Patrick Batterfly
Level 17
Livny
Question about the task
Longest string
Java Syntax
,
Level 7
,
Lesson 6
Resolved
Guys,please, tell me what's wrong with my code
All conditions are met, but somehow the last requirement doesn't count. What's the issue?
5/31/21
595
views
4
comments
0
Sansho
Level 19
Bordeaux
Question about the task
Request parser
Java Core
,
Level 5
,
Lesson 12
Under discussion
[3rd req. X ] My outputs are corrects, but the Robot is tellin' me nooOOooOOOo
Well, I don't understand in which case I'm wrong, even when I test with a custom link...
5/27/21
818
views
9
comments
0
Manoj Deo
Level 3
Mumbai
Question about the task
I'm 15 again!
Java Syntax
,
Level 1
,
Lesson 4
Under discussion
??
whATS WRONG
10/20/18
1391
views
4
comments
0
iqbalhussain
Level 2
Peshawar
Question about the task
How do you serialize Singleton?
Java Core
,
Level 10
,
Lesson 4
Resolved
need help last condition is not satisfied
need help last condition is not satisfied
1/27/19
1774
views
4
comments
0
John
Level 17
Mansfield
Question about the task
Sorting even numbers from a file
Java Core
,
Level 3
,
Lesson 11
Under discussion
Program displays too many lines
Anybody knows whats wrong?
5/28/21
619
views
2
comments
0
Pahunchik
Level 8
Moscow
Question about the task
Checking the order
Java Syntax
,
Level 7
,
Lesson 9
Under discussion
help please
can't pass last condition
5/30/21
1163
views
2
comments
0
Pahunchik
Level 8
Moscow
Question about the task
Duplicating words
Java Syntax
,
Level 7
,
Lesson 9
Under discussion
I get an error when checking the last condition:
I get an error when checking the last condition: Display the resulting list, each element on a new line.
5/30/21
525
views
5
comments
0
Liliane Top
Level 17
Amsterdam
Question about the task
Buggy initializeIdAndName
Java Core
,
Level 3
,
Lesson 2
Resolved
It compiles and runs so why do I fail the test
Not sure what is requested.
3/7/20
1426
views
6
comments
1
AP
Level 15
Bodmin
Under discussion
Can I run Minesweeper game in Intellij Idea?
Is anyone able to run Minesweeper game in IntelliJ Idea? If yes, please help with the debug configurations. I am looking for Main class to define in configuration. Thanks
9/6/20
892
views
1
comment
0
Evgen
Level 23
Question about the task
Longest sequence
Java Syntax
,
Level 8
,
Lesson 6
Under discussion
what's wrong with my code
please anybody! explain me what's wrong here
5/18/21
700
views
2
comments
2
Raja Usman
Level 0
Rawalpindi
Under discussion
Write the abstract class of Person having abstract methods of set name, get name, set age and get age. Also create two child classes Student: having Registration and CGPA Teacher: having Specialization and pay Create menu to add, display, update the values of Students and Teachers using polymorphis
Write the abstract class of Person having abstract methods of set name, get name, set age and get age. Also create two child classes Student: having Registration and CGPA Teacher: having Specialization and pay Create menu to add, display, update the values of Students and Teachers using polymorphis
5/29/21
581
views
0
comments
0
Hisham Thabet
Level 8
Lahj
Under discussion
I'm new with Java, and when run this code give me this error: non-static variable this cannot be referenced from a static context BridgeOfficer officer = new BridgeOfficer(1500);...I search a lot in google but I can't fix it
public class Truck { int weight; public class BridgeOfficer { private int maxWeight; public BridgeOfficer(int normalWeight) { this.maxWeight = normalWeight; } public boolean checkTruck(Truck truck) { if (truck.weight > max
5/29/21
574
views
2
comments
0
zaid hamdan
Level 2
Amman
Question about the task
Nerd break
Java Syntax
,
Level 0
,
Lesson 7
Under discussion
I can't collect dark matter from the nerd break task
When I had the first nerd break task I watched the video but didn't get any dark matter so I just moved on but now I need dark matter to unlock the next level and nerd break is the only task I have. I tried watching it again but that didn't wok. How do I collect the dark matter?
5/28/21
802
views
1
comment
0
Yusuf el Turki
Level 5
Rhein
Question about the task
Closest to 10
Java Syntax
,
Level 4
,
Lesson 4
Under discussion
Guys what this abs method actually does?
I know how if else statement works but i didnt get this abs method. How can i use is it?
5/28/21
662
views
1
comment
0
Angeget
Level 22
Potsdam
Question about the task
Replacing numbers
Java Core
,
Level 9
,
Lesson 11
Archived
Could somebody help me please ?
The requirement is fufilled after testing my code. But on CodeGym site this is not fufilled. I do not understand why help help help please
3/16/19
2173
views
1
comment
0
hidden #10426395
Level 2
Resolved
How to reset own progress?
Please help, I want to reset own Codegym progress and I don't know how to do it. I want to begin right from the very beginning.
2/6/19
2391
views
1
comment
1
Johannes
Level 27
Centurion, Pretoria
Question about the task
Replacing numbers
Java Core
,
Level 9
,
Lesson 11
Archived
Before I continue with this task: Please give me a pointer ?
Please give me a pointer: I don't know what they require from me in this task Before I continue with this task: I can code as they require, but the output examples are not reflecting what they are asking ?
4/20/20
1395
views
4
comments
0
Raj Mishra
Level 2
India
Question about the task
Reading a file
Java Core
,
Level 3
,
Lesson 11
Under discussion
Unable to identify the cause of failure
There is noting wrong in my program. I am able to display the contents of file path I am passing. But 2nd step is failing and I am getting recommendation from mentor as "Too many lines". Can any one clarify exactly what he wants to say ? I am only displaying 3 lines(3 letters in 3 lines)
5/21/21
813
views
3
comments
0
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