Page 79 | CodeGym online Java course - Help

Andrei
Level 41
Question about the task Phone number verification
Java Multithreading, Level 2, Lesson 13
Resolved
2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits. BUT the example they give, is false (0)501234567 - false 2) if the number starts with a digit or opening parenthesis, then it must contain 10 digits This is considered to give a false - (0)501234567 - false What am I missing?
02.04.2021
611views
3comments
0
Max Sudik
Level 41
Vancouver
Question about the task Shuffled just in time
Java Syntax, Level 7, Lesson 12
Under discussion
Explain pls this "list.add(list.remove(0));"I just have a question about this part of code list.add(list.remove(0)); Can you pls explain the order of actions here? if remove(0) is performed first, how then add method knows what was in in the 0? It's basically self-explanatory, however, I didn't know we can add to the list and element whic
31.03.2021
560views
5comments
0
Josephine
Level 26
Normal
Question about the task Build a WHERE query
Java Multithreading, Level 2, Lesson 9
Resolved
Why this is not passing?Someone please help Why this is not passing?Someone please help
01.04.2021
756views
6comments
0
Nick Frase
Level 8
Salt Lake City
Question about the task Longest string
Java Syntax, Level 7, Lesson 6
Under discussion
Why no Work!This should work, yet it is failing the requirement "The program should read 5 strings from the keyboard and write them to the list of strings". I even printed the strings ArrayList after adding all 5 strings and they were all added. :///
01.04.2021
396views
2comments
0
Andrei
Level 41
Question about the task Phone number verification
Java Multithreading, Level 2, Lesson 13
Resolved
What is the point of this exercise? To learn REGEX or ... ? I mean we can find the validation code for a phone number online.Does anyone have an idea or why this exercise would be useful ? I mean it's not like you have to churn out prep code and think about the logic of the program (unless you want to go the route of if statements like I started). Is it worth trying to remember the regex combinations?
01.04.2021
625views
3comments
0
Mikayla Pace
Level 27
Salt Lake City
Question about the task StringTokenizer
Java Multithreading, Level 2, Lesson 13
Resolved
I already solved this problem, but I'm not sure why it works.Why does this loop update my String [] correctly: for (int i = 0; i < tokenArray.length;) { while (tokenizer.hasMoreTokens()) { String token = tokenizer.nextToken(); tokenArray[i] = token; i++; } But this does not? for (i
22.01.2020
1249views
5comments
0
gh0stl0nely
Level 23
Toronto
Question about the task Counting words
Java Core, Level 9, Lesson 5
Under discussion
Last condition not met.I assume that the sample input is something like => love?water!WorLd?H3lle In the case of -> worldworld234,ELSworldo2? , will the result be 2? or 0? The error message shows that I am not counting all the instances of "world", although I've already tested this solution locally. Essentially
31.03.2021
600views
3comments
0
Zach
Level 22
Fort Collins
Question about the task Make a family
Java Syntax, Level 8, Lesson 11
Resolved
Null Pointer exception??I'm not sure why I am getting a null pointer exception. Or could someone point me in the right direction where to put a try-catch block perhaps. thanks import java.util.ArrayList; public class Solution { public static void main(String[] args) { //write your code here
22.02.2021
1144views
6comments
0
Anna
Level 13
Gdańsk
Under discussion
Problem with IntelliJ plugin After downloading new plugin I have no access to any of my tasks: neither avaiable, in progress or closed, nothing. How can I fix this issue?
14.03.2021
399views
0comments
0
Haakco
Level 2
Fall River
Under discussion
short queston do i have to subscribe to continue doing tasks?
14.03.2021
483views
0comments
0
aem
Level 22
Amsterdam
Under discussion
Intellij Community Edition 2020.3 crashing after every task verification Hi All, I need your help! Installed Intellij CE 2020.3 on Ubuntu 20.04(fox). Every time I verify a task Intellij shuts down. Does someone has experience with this issue? Appreciate your help ;)
08.03.2021
448views
0comments
0
diconnect24
Level 7
Under discussion
Jak zrozumieć to co sie znajduje w metodziewyswietlNajblizszaDziesiatce?Proszę o pomoc
01.03.2021
438views
0comments
0
Roni Ednei Almeida Lima
Level 8
Question about the task Minesweeper (Part 3/16)
Games, Level 0, Lesson 0
Resolved
I need help ...I need help ...
31.03.2021
544views
2comments
0
gh0stl0nely
Level 23
Toronto
Question about the task Picking out numbers
Java Core, Level 9, Lesson 5
Under discussion
Local test passed with given input from the exercise - 5th condition still failed.Would love to see you guys' input on this one :-| I kinda like this approach better than the double for loop in the solution...
31.03.2021
453views
2comments
0
The Chief
Level 18
Question about the task Animal set
Java Syntax, Level 8, Lesson 11
Under discussion
Why can't I add to the pets set and remove elements individually?For this task, I initially tried to add all the cats and dogs to the pets set individually and remove the cats individually as demonstrated in the attached screenshot but the compiler wouldn't accept it. Can someone please tell me why?
28.03.2021
494views
4comments
0
Aryan Babaie
Level 4
Jülich
Question about the task Minimum of four numbers
Java Syntax, Level 2, Lesson 8
Under discussion
why it goes so fast hey guys, I have done the task right but just wanted to see the right solution and when I saw it I just got blown away!! what is that actually? can someone explain it to me somehow? ( I mean the statement after "return")
30.03.2021
525views
1comment
0
Andrei
Level 41
Question about the task Inverted words
Java Multithreading, Level 2, Lesson 9
Under discussion
Nothing is being printed. Why?I went through the code and I feel it is ok. I even added a check to ensure no duplicates are added to the list (lines 45-49). Please ignore line 37. Yet nothing is printed.
30.03.2021
392views
2comments
0
Emanuele
Level 12
Under discussion
java: package com.codegym.engine.cell does not exist Buongiorno a tutti. Cercando di eseguire il codice in IntelliJ Idea, compare il messaggio in oggetto. Su CodeGym viene invece eseguito correttamente. Mi piacerebbe continuare lo sviluppo degli esercizi del corso in IntelliJ Idea. I precedenti esercizi che non richiedono il pacchetto com.codegym.engi
30.03.2021
701views
1comment
0
John
Level 17
Mansfield
Question about the task We don't need repeats
Java Syntax, Level 8, Lesson 8
Under discussion
what's wrong with my iterator?it says that package map2 not found even though I'm pointing to map2 Map when i try to create iterator
28.03.2021
708views
14comments
0
Daniel Whyte
Level 17
Question about the task Who's that smarty?
Java Core, Level 3, Lesson 2
Under discussion
interface Secretary extends Person I actually had no idea that an interface could extend a class
30.03.2021
412views
1comment
0
Sofia
Level 2
Thatta
Question about the task We don't need any extra lines
Java Syntax, Level 1, Lesson 7
Under discussion
please solve this code and teach me how you solve it ?package com.codegym.task.task01.task0123; /* We don't need any extra lines */ public class Solution { public static void main(String[] args) { int a = 10; int b = 15; double c = b + 38; int d = a + 12; double e = 12.3; String s = "s" + a;
30.03.2021
612views
1comment
0
Djordje
Level 19
Question about the task Number of letters
Java Syntax, Level 10, Lesson 11
Resolved
What is wrong with this? When I run it, it shows exactly what was required.package com.codegym.task.task10.task1012; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; /* Number of letters */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader reader = new BufferedReader
27.11.2018
2063views
7comments
0
Khongpak Phupkdee
Level 15
Chiangrai
Question about the task Cat relations
Java Syntax, Level 6, Lesson 11
Resolved
Why I stuck 6 Object , when I created 6 Objs Completed? Please Help!Why I stuck 6 Object , when I created 6 Objs Completed
28.03.2021
459views
2comments
0
An Gelo
Level 18
Cebu
Question about the task Kind Emma and the summer holidays
Java Syntax, Level 8, Lesson 8
Resolved
remove method hi need help is my format/conditions incorrect please help me.. what are the other ways i could the find the date in between month
22.08.2018
2372views
4comments
0
John
Level 17
Mansfield
Question about the task Kind Emma and the summer holidays
Java Syntax, Level 8, Lesson 8
Under discussion
PLEASE HELP WHAT'S WRONG HERE I think everything's fine help me please im stuck : (
27.03.2021
593views
6comments
0
John
Level 17
Mansfield
Question about the task Kind Emma and the summer holidays
Java Syntax, Level 8, Lesson 8
Under discussion
Please help :(Im stuck for a days can somebody give me a clue
27.03.2021
411views
1comment
0
Maxim Raitin
Level 20
Tomsk
Question about the task Software update
Java Syntax, Level 8, Lesson 11
Resolved
I've given up..I don't know why output is Rockefeller rather than Gates. Why my for loop choose previous getValue, but not current one. Please, help me.
27.03.2021
658views
1comment
0
Alexandre Lalancette
Level 41
Quebec
Question about the task Shortener (14)
Java Collections, Level 6, Lesson 15
Under discussion
Not passing the last requirement! I suspect the problem is in the FileStorageStrategy class Not passing the last requirement! I suspect the problem is in the FileStorageStrategy class but I can't find how/why. Can someone give me a small hint?
12.02.2020
1221views
4comments
2
remote87
Level 18
Sofia
Question about the task Most frequent bytes
Java Core, Level 8, Lesson 3
Resolved
Seems to me I'm missing something As far as I understand the task condition, I'm doing exactly as what is wanted, but still can't pass that 3rd condition. I think I'm missing the output, but still can't figure it out. Any advice....Lupe? :D
26.03.2021
614views
6comments
0
gh0stl0nely
Level 23
Toronto
Question about the task Counting words
Java Core, Level 9, Lesson 5
Under discussion
Last condition not met while local test cases all passed I tested on my computer with my own tests like: Case 1: world?me,lol,world => return 2 Case 2: world.ok.world.wor32.wor0x:world => return 3 It says "Determine why 'world' appears more than it exists" I don't want to use the solution that CodeGym provides. Too complex.
26.03.2021
388views
2comments
0

1
...
77
78
79
80
81
...
372