Page 89 | CodeGym online Java course - Help

Nathan
Level 13
Below the firmament
Question about the task Adding
Java Syntax, Level 4, Lesson 16
Resolved
I may or may not have broken something.When I run the program in IntelliJ I think I'm satisfying all the criteria. However when I try to validate the answer it keeps timing out?
07.02.2021
444views
2comments
0
Adrian
Level 27
Spanish Town
Question about the task Equals and HashCode
Java Multithreading, Level 1, Lesson 5
Under discussion
getClass() and instanceof "The equals method should check whether the passed object is a Solution object." Per the stated condition, why does code that uses getClass() check not pass but the instanceof check does? Strictly speaking the instanceof operator is not checking to see if the passed object is a Solution object, bu
06.02.2021
745views
3comments
0
Jordi Claes
Level 17
Question about the task Even numbers
Java Syntax, Level 4, Lesson 13
Under discussion
IntelliJ says it requires a boolean for the if statement, what am i doing wrong please?package com.codegym.task.task04.task0435; public class Solution { public static void main(String[] args) throws Exception { int x = 1; for (x =1; x < 101; x++) if (x % 2 = 0) System.out.println(x);//write your code here } }
07.02.2021
752views
2comments
0
Mina Nabil
Level 17
Sydney
Question about the task Crossing the road blindly
Java Syntax, Level 4, Lesson 4
Resolved
Hi, whats wrong with my code ?Hi, whats wrong with my code ?
05.02.2021
687views
2comments
0
Gus Iwanaga
Level 18
Munich
Question about the task R or L
Java Syntax, Level 7, Lesson 9
Resolved
Don't get it why 3rd test condition does not pass Hi everyone. Been working on this exercise for a few hours and I don't understand my the third test condition does not pass. I'm also not really satisfied with the code structure (additional hints on how to make it cleaner are highly appreciated) but for now a bit of help to help me understand what'
05.02.2021
543views
4comments
0
Christopher Berg
Level 7
Under discussion
Abo monatlich kündbar?Überlege das Abo zu nehmen , würde aber gerne wissen ob es montlich kündbar ist, da ich es nur 3 Monate nutzen möchte. LG Chris
06.02.2021
646views
0comments
0
Anthony Chalk
Level 30
London
Question about the task Phone number verification
Java Multithreading, Level 2, Lesson 13
Under discussion
Please help Sorry the code is a bit messy; not sure why it isn't working
06.02.2021
430views
1comment
0
Mina Nabil
Level 17
Sydney
Question about the task Animal set
Java Syntax, Level 8, Lesson 11
Under discussion
Hi, I was wondering why the remove Cats method is not working ? Thanks Hi, I was wondering why the remove Cats method is not working ? Thanks
06.02.2021
453views
3comments
0
Jordan
Level 7
Martinsburg
Question about the task Crossing the road blindly
Java Syntax, Level 4, Lesson 4
Under discussion
I've tested so many numbers, and it seems right. What's wrong? package com.codegym.task.task04.task0416; import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String input1 = reader.readLine(); d
06.02.2021
523views
1comment
0
Tamas Horcsak
Level 18
Leeds
Question about the task Checking the order
Java Syntax, Level 7, Lesson 9
Under discussion
finally I got the right result but not accepted :(finally I got the right result but not accepted :( public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); ArrayList list = new ArrayList();
03.02.2021
486views
2comments
0
AlfredW
Level 23
Denver
Question about the task Fixing bugs
Java Core, Level 4, Lesson 8
Under discussion
Got it verified but have no idea what is happening.Once again a task where I have had to basically copy strings of code from other answers given in questions to get it right. I am totally missing a whole lot here. Yet when I go back and read through the lessons I do not see the answers. Lost lost lost. But I guess I will just keep plugging away at
16.08.2020
646views
4comments
2
Romain
Level 26
Paris
Question about the task Overriding serialization in a thread
Java Core, Level 10, Lesson 10
Resolved
Bad understanding Until now I thought we had to re-declare our fields one by one in the readObject method's, like this : private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException { fileName = (String) in.readObject(); in.defaultReadObject(); stream = new FileO
03.02.2021
561views
6comments
0
An Gelo
Level 18
Cebu
Question about the task Set of cats
Java Syntax, Level 8, Lesson 11
Resolved
remove 1 one cat HI i have problem in removing cat can you guys help me. how do i remove 1 cat.
23.08.2018
3380views
17comments
0
Ryan Palmer
Level 20
Philadelphia
Question about the task Maximum in an array
Java Syntax, Level 7, Lesson 4
Resolved
Comprehension check Perhaps this is basic, but I am not quite sure I understand what is happening here: public static void main(String[] args) throws Exception { int[] array = initializeArray(); int max = max(array); System.out.println(max); Is this instantiating an array object and immediate
04.02.2021
501views
2comments
0
sgubow
Level 10
Forest Grove
Question about the task Pets need people
Java Syntax, Level 2, Lesson 5
Resolved
Does order matter?So during this task I struggled for awhile and this is what was wrong: I assigned the animals an owner and had this as the code: woman = cat.owner; woman = dog.owner; woman = fish.owner; then I downloaded the correct solution and it was changed to this: cat.owner = woman; dog.owner = woman; fish.
03.02.2021
573views
2comments
0
Andrei
Level 41
Question about the task Sorting even numbers from a file
Java Core, Level 3, Lesson 11
Resolved
Very strange output. Please help.I get the output 13, 13, 45 for the input suggested in the exercise. What am I doing wrong? I feel it's from the fileinputstream but I can't put my finger on it. Please advise. This is the current form, I don't know why it isn't updated. public class Solution { public static void main(String[
27.11.2020
753views
6comments
1
Noob_Coder
Level 22
Springfield
Question about the task Playing Javarella
Java Syntax, Level 7, Lesson 9
Under discussion
dk how to do I think it is not a hard question which just add to different list by cases,but idk what's wrong with my code,need clear explanation.
01.11.2020
420views
3comments
0
Anitamalina
Level 18
København
Question about the task Playing Javarella
Java Syntax, Level 7, Lesson 9
Under discussion
Add to the third supplementary list all the remaining numbers from the main list.Why is this wrong?
19.11.2020
498views
2comments
0
J H U X
Level 7
Alkmaar
Question about the task Remove and insert
Java Syntax, Level 7, Lesson 6
Resolved
Almost there...!I'm getting 13 arrays printed out, with everytime the last index in the first spot, so very happy with that. But HOW do I print every value of every array on a separate line? By the way, I've tried System.out.println(list.get(0) too, but that doesn't work either...
05.02.2021
450views
2comments
0
wissam
Level 24
Jaramana
Question about the task Longest sequence
Java Syntax, Level 8, Lesson 6
Under discussion
why my solution is not accepted?package com.codegym.task.task08.task0812; import java.io.*; import java.util.*; /* Longest sequence */ public class Solution { public static void main(String[] args) throws IOException { Scanner scanner = new Scanner(System.in); ArrayList listOfNumbers = new ArrayList();
05.02.2021
390views
1comment
0
Andrew
Level 29
Seattle
Question about the task Chat (part 11)
Java Multithreading, Level 6, Lesson 15
Resolved
My code is timing out on the serverHandshake(connection) call.I can't get past the timeout when calling userName = serverHandshake(connection); I commented that line out so I could fail the test and post my code but I usually run it without comments. I'm also not sure where the removal of the user from map should be. Catch block, finally block or after the tr
21.05.2019
1516views
4comments
0
Bill Wu
Level 29
Wellington
Question about the task Charting our own course
Java Multithreading, Level 5, Lesson 9
Resolved
Not verified I got the expected result shown in the example, but cannot pass. I tried different ways like use an array to store the trace as well, but no luck. Any help please? Thanks.
23.04.2019
1604views
5comments
2
Dinesh
Level 7
Delhi
Under discussion
Error in implementation of logic outside constructors (Concept) Going through the topic Constructors Wanted to implement the concept you should not put your program's logic inside a constructor. For the following I tried to Put all the logic in a separate method. printFactoryInfo(). Where I pass a CarFactory object to it as an argument. putting all the lo
02.02.2021
465views
5comments
0
Madi
Level 6
Nice
Question about the task Initializing cats
Java Syntax, Level 5, Lesson 7
Under discussion
I dunno what's wrong?Pleaaaase help!!!
03.02.2021
549views
5comments
0
Ailana
Level 2
San Carlos
Question about the task Where does a Person come from?
Java Syntax, Level 2, Lesson 2
Under discussion
WHAT IS THE SOLUTION PLZ HELP WHAT IS THE SOLUTION PLZ TELL ME AND EXPLAIN AS SOON AS POSSIBLE PLZZZZ
10.08.2020
633views
4comments
0
Andrei
Level 41
Question about the task Counting words
Java Core, Level 9, Lesson 5
Resolved
It counts only 2 out of 3 worlds . Why?It counts only 2 out of 3 worlds . Why?
04.02.2021
702views
3comments
0
Abdelrahman
Level 5
Amman
Question about the task Even numbers
Java Syntax, Level 4, Lesson 13
Under discussion
help this is an easy question but I don't understand what 3rd task wants could someone explain for me
04.02.2021
388views
3comments
0
Andrei
Level 41
Question about the task Reinforce the adapter
Java Core, Level 9, Lesson 3
Resolved
"The getCountryCode() method must return the code for the country returned by the customer field's getCountryName() method." What? How to extract country code from countryName?I have extracted the country code from the getphonenumber() which i believe it is correct. FIrst I split with the paranthesis using .split("\\(") or .split("[(]") ; Then I take everything out after the + ; @Override public String getCountryCode() { String[] countryCode = cont
04.02.2021
525views
3comments
0
Maryem Vickers
Level 7
HT...
Question about the task Duplicating words
Java Syntax, Level 7, Lesson 9
Under discussion
Help, please!What's it doing?!
03.02.2021
573views
1comment
0
Daniel Whyte
Level 17
Question about the task To the top of the list
Java Syntax, Level 7, Lesson 6
Under discussion
ArrayList How do we decide whether to us an arrayList or just an array of 10?
02.02.2021
370views
2comments
0

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