Page 85 | CodeGym online Java course - Help

Zach
Level 22
Fort Collins
Question about the task We don't need repeats
Java Syntax, Level 8, Lesson 8
Under discussion
Why an concurrent error even though I'm using an Iterator I don't know why I am getting this error with an iterator. If I didn't have to use the other method I could probably solve this. Thanks for your help. package com.codegym.task.task08.task0817; import java.util.HashMap; import java.util.Map; import java.util.Iterator; /* We don't need repeats
24.02.2021
397views
1comment
0
Anthony Chalk
Level 30
London
Question about the task Refactoring, anonymous classes
Java Multithreading, Level 4, Lesson 9
Under discussion
Completely lost I have 12 errors in my code and I just have no idea how to do this one
24.02.2021
662views
4comments
0
Vincenzo Seggio
Level 28
Question about the task Phone number verification
Java Multithreading, Level 2, Lesson 13
Resolved
How does it work?Hi people, i try to check the 3. Verification criteria of the task: 3) the number may contain 0-2 non-consecutive '-' characters with public class Test { public static void main(String[] args) { String s = "+3805012f3-45-67"; //s = "A"; String regex = "[-]{0,2}";
24.02.2021
520views
2comments
0
Tangerin
Level 27
Chongqing
Question about the task Clocks
Java Core, Level 6, Lesson 7
Under discussion
Infinite loop? Can't figure it out CodeGym gives me this warning but in IDEA everything worked just fine. The program quits itself as soon as "Double Check" shows up. Also please remove the "Thread.stop()", that's not part of my code. Thanks!
16.07.2019
1394views
4comments
0
Molly Garnett
Level 1
Under discussion
Why does 'return' in this case exit the loop?This is an example from Java in Two Semesters 6.8.3 static boolean containes(int[] arrayIn, int valueIn) { for (int currentElement : arrayIn) { if (currentElement == valueIn) { return true; // exit loop early if value found } } return false; // value not present } It says that the RETURN TRUE wi
23.02.2021
643views
2comments
0
Gellert Varga
Level 23
Szekesfehervar
Question about the task Robot wars
Java Core, Level 3, Lesson 11
Resolved
Robot wars: wars with the verifier I have yet to practice interpreting the logic of the verifier = I have not the faintest idea what its problem is.
23.02.2021
526views
5comments
0
Damian
Level 18
Lublin
Under discussion
What does it mean?What is this notation of numbers? 1234_564_890L 0b1000_1100_1010 110_987_654_6299.123_34 What are these spaces for? What is 0b for at the beginning? What is going on here?
23.02.2021
421views
1comment
0
Goran
Level 41
Belgrade
Question about the task Read online about the median of a sample
Java Multithreading, Level 6, Lesson 2
Resolved
I solved task but there is some strange situation I have passed task but when I tested my code I had wrong output. If you run code from below you will get results like there was no sort(test); command. Can some one explain why is this happening ? Integer[] test = {13, 8, 15, 5, 17}; sort(test); for (int i = 0; i < te
21.02.2021
493views
4comments
0
sergio
Level 8
Bogota
Question about the task Streets and houses
Java Syntax, Level 7, Lesson 4
Archived
This tasks keeps showing me this message: EditorConfigTokenType.SEPARATOR expected, got '.'This tasks keeps showing me this message: EditorConfigTokenType.SEPARATOR expected, got '.' on lines 33 and 35, is it an issue with Intelijj Idea?
22.02.2021
455views
2comments
0
Anthony Chalk
Level 30
London
Question about the task Black box
Java Multithreading, Level 4, Lesson 4
Resolved
Matches example output I also tried removing the "\n" from the SecondClass's SPECIFIC_ACTION_FOR_ANONYMOUS_SECOND_CLASS_PARAM. When I did that, it passed the first condition but still failed the other two Edit: I overrode the anonymous FirstClass's someAction() method and called the parent class method This solved the 3
23.02.2021
474views
0comments
0
MoJo
Level 23
Cairns
Question about the task Word search
Java Core, Level 10, Lesson 10
Resolved
Last condition "Retruned List is not the right size"First of all, sry my code looks like a mess. So i know that it might be possible that a word starts on the same letter but i thought once a letter is used in a found word it is used up. Example: a b c d ef g hi 1 x x x x x x l x x 2 x x x x o x x x x 3 x x o x x x x x x 4 x c x x x x x x x 5 x x
19.02.2021
648views
4comments
0
Daniel Whyte
Level 17
Question about the task Returning a stack trace
Java Syntax, Level 9, Lesson 2
Under discussion
Thread.currentThread()What is the significance of Thread.currentThread() I've tried looking it up but I'm not sure what it's actually doing.
22.02.2021
527views
1comment
0
Maxim Raitin
Level 20
Tomsk
Question about the task Longest sequence
Java Syntax, Level 8, Lesson 6
Under discussion
This code works in intellij idea Don't know how to count 1, if all numbers are equal. Any clue, please?
23.02.2021
567views
1comment
0
Sinisa
Level 11
Banja Luka
Question about the task Console-based piggy bank
Java Syntax, Level 5, Lesson 12
Resolved
Scanner input Hello, I want to solve this task via using Scanner, however it is not catching the exception i.e. input of the string 'sum' properly. Any suggestions?
22.02.2021
650views
1comment
1
Anatoly
Level 17
Question about the task Writing to a file from the console
Java Core, Level 3, Lesson 11
Resolved
Validator is wrong with that Code works perfectly fine! public class Solution { public static void main(String[] args) throws IOException { // write your code here BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); String st = br.readLine(); File file = new File(st);
22.02.2021
414views
2comments
0
Letenyei Ádám
Level 16
Bakonyszombathely
Question about the task Snake (Part 11/20)
Games, Level 0, Lesson 1
Under discussion
I can't find the right answer. Please help me.The last condition is not right. Please help me to find the problem.
15.09.2019
1452views
2comments
0
Satya Vath
Level 31
Vijayawada
Question about the task Snake (Part 11/20)
Games, Level 0, Lesson 1
Resolved
Help ME Please Help
10.09.2019
1717views
16comments
0
Steve Bennett
Level 18
Stoneleigh
Question about the task Snake (Part 7/20)
Games, Level 0, Lesson 1
Under discussion
Why do none of the UTF-16 Codes show actual images in the Game Screen?I've done these games twice over to get my practice in , but whats doing my nut is the images that are supplied from CodeGym only appear as 5 lines when testing the games. Is this a setting issue or an out of date issue? Many thanks for any info guys .
18.02.2021
556views
2comments
0
Andrei
Level 41
Question about the task Contextual advertising
Java Core, Level 9, Lesson 11
Resolved
How does this work? I can't understand ... Please explain the logic OK, so I copied the code from Johannes in hopes that I would be able to understand it and rewrite it myself, from memory. But no matter how I tried, I couldn't figure out the logic. Let me explain what puzzles me: In line 10 we are attributing out a new stream. But that stream isn't configured abov
22.02.2021
662views
5comments
0
Wojtek
Level 23
Solec-Zdroj
Question about the task Long words
Java Core, Level 9, Lesson 11
Under discussion
What is wrong?Input: politechnika,autonomia,wojtas,gra,polistanczysk jareksamoraj,cc,chingismog,uu,tttttttt Output: politechnika,autonomia,polistanczysk,jareksamoraj,chingismog,tttttttt
05.04.2019
1304views
4comments
0
wissem hajbi
Level 7
Under discussion
secret key i had a mistake in entering the secret key in the plugin when i started using it . how can i re enter the secret key again please ? urgent
22.12.2020
502views
1comment
0
Angelika
Level 25
Budapest
Question about the task Replacing numbers
Java Core, Level 9, Lesson 11
Archived
Could anyone help me? My solution seems good to me, but not for codegym. what's the problem?
29.01.2020
924views
5comments
0
sergio
Level 8
Bogota
Question about the task One large array and two small ones
Java Syntax, Level 7, Lesson 4
Resolved
I’ve been trying, but last condition not met, thanks in advance I’ve been trying, but last condition not met, thanks in advance
19.02.2021
592views
2comments
0
Jason
Level 26
Rancho Cucamonga
Question about the task Serialization is prohibited
Java Core, Level 10, Lesson 10
Resolved
I don't know any other way to throw an exception...ummm... yeah... IDK
04.12.2019
1263views
6comments
0
Daniel Whyte
Level 17
Question about the task Cat code won't compile
Java Syntax, Level 7, Lesson 12
Under discussion
@Override Why apply @Override at the end? What is the risk of error?
20.02.2021
802views
8comments
0
BlueJavaBanana
Level 37
Question about the task Fibonacci numbers using recursion
Java Collections, Level 4, Lesson 2
Resolved
Does this need to be solved with one method?Do I need to solve this task within this method? public int fibonacci(int n) { return 0; } Or will I need to make a helper method that uses arrays to keep track of the n-1, n-2?
21.02.2021
503views
3comments
0
Max
Level 5
Stamford
Question about the task Adding
Java Syntax, Level 4, Lesson 16
Under discussion
Need help I can't find the error.
20.02.2021
564views
4comments
0
TaoLu
Level 20
泾县
Under discussion
An error occurred: APP_PUBLISH_ERROR An error occurred during verification when i run task of Minesweeper (Part 16/16)
21.02.2021
569views
0comments
1
TaoLu
Level 20
泾县
Under discussion
Task number and link of task page how to Enter the number or link to the task page is it https://codegym.cc/tasks/com.codegym.games.minesweeper.part16 or some code? How to view details for task number or page of link ?
21.02.2021
403views
1comment
1
Raed Saleh
Level 25
Amman
Question about the task Tracking changes
Java Core, Level 9, Lesson 11
Under discussion
this task wont verify why this task wont verify I would be grateful if some one help me out thanks
20.02.2021
689views
2comments
0

1
...
83
84
85
86
87
...
371