Page 113 | CodeGym online Java course - Help

Karol Wijas
Level 12
Zawada
Under discussion
Poziomy trudności zadań ?Witam, Czy ktoś opisze poziomy trudności zadań? Tak z ciekawości bo nie mogę nigdzie znaleźć na stronie :D
26.11.2020
477views
5comments
0
Andrei
Level 41
Question about the task Don't mix beer with cola
Java Core, Level 3, Lesson 2
Resolved
public vs default?If public interface drink is public, and public class beer is public and boolean isAlcoholic is default, why do I have to change it to public when implementing it in beer class?
26.11.2020
422views
2comments
0
Jeremi Nuer
Level 7
San Francisco
Question about the task String array in reverse order
Java Syntax, Level 7, Lesson 4
Resolved
Should work... why doesn't it?I've checked other peoples problems, and looked over mine quite a few times. Everything should work, but its not fulfilling last two requirements, and its not telling me whats wrong.
26.11.2020
398views
1comment
0
Albert
Level 6
Hong Kong
Question about the task Create a Rectangle class
Java Syntax, Level 5, Lesson 9
Under discussion
Cannot get the point of this task // I kind of pass the task, but I have completely no idea what I have done // Did I miss any element from the task? /* if I type: public Rectangle(int left, int width){ // case A this.left = left; this.width = width; } does it presents to the system the same as: pu
24.11.2020
697views
2comments
0
Maryem Vickers
Level 7
HT...
Question about the task Longest string
Java Syntax, Level 7, Lesson 6
Under discussion
Hey, what is the NullPointerException Error here?! I need some help!Hi coders, Can I have some help?! If you run this, you find this error; java.lang.NullPointerException at com.codegym.task.task07.task0708.Solution.main(Solution.java:23) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethod
13.11.2020
406views
2comments
0
Andrei
Level 41
Question about the task Minesweeper (Part 6/16)
Games, Level 0, Lesson 0
Resolved
I don't understand how gameField[y][x] = new GameObject(x, y, isMine); works. Can someone please explain?Hello, In the program there is this line gameField[y][x] = new GameObject(x, y, isMine); but I don't quite understand what exactly is does. Does it add at position y the indices x which is the new game object? Do the x and y from gameobject transfer to the gamefield array? If so, how is that po
24.11.2020
697views
4comments
0
Dave Shapiro
Level 31
Co. Kerry
Question about the task Cats
Java Core, Level 4, Lesson 4
Under discussion
Glitch in task i think?Output I'm getting: I'm boss, an alley cat I'm a nice kitten named Missy I'm a nice kitten named Smudgey I'm pirate, an alley cat My method (I'll post it since it won't pass with this!): BufferedReader r = new BufferedReader(new InputStreamReader(System.in)); String catIn = null; w
16.11.2020
510views
5comments
0
Cristian
Level 13
Ploiesti
Question about the task R or L
Java Syntax, Level 7, Lesson 9
Under discussion
Cannot find symbol symbol: method remove(int) location: variable s of type java.lang.String.Hi, guys! I make a mistake. It's something about method remove, I think. cannot find symbol symbol: method remove(int) location: variable s of type java.lang.String. Please clarify me. Thank you in advance! package com.codegym.task.task07.task0716; import java.util.ArrayList; /* R or L */ pub
23.11.2020
1827views
4comments
0
Roman Grygorczuk
Level 19
Cracow
Question about the task Software update
Java Syntax, Level 8, Lesson 11
Resolved
Cannot pass last requirements Hi all, Cannot pass the last condition. I read through another examples in the forum but I cannot understand what is wrong. Any hints? Thanks, Roman
22.11.2020
697views
9comments
0
Bogdan Codreanu
Level 23
Question about the task Find all the files
Java Collections, Level 1, Lesson 2
Resolved
can someone help please ????
05.09.2019
1393views
2comments
0
Jay
Level 17
Washington
Question about the task Robot wars
Java Core, Level 3, Lesson 11
Under discussion
Compilation error: Need Help I continue to receive the following error message, and I can't figure out why: com/codegym/task/task13/task1328/Solution.java:27: error: cannot find symbol robotFirst.getName(), robotSecond.getName(), attacked, defended)); ^ symbol: method getName()
14.08.2019
1077views
2comments
0
Andrei
Level 41
Question about the task Identical words in a list
Java Syntax, Level 10, Lesson 11
Under discussion
The algorithm works on paper but running it gives different result.Please advise, what am I doing wrong?
19.11.2020
608views
6comments
0
Maksim Lukjanskis
Level 17
Riga
Question about the task StringHelper class
Java Syntax, Level 6, Lesson 8
Under discussion
Someone can help me?I read a couple of differents hints, from others questions, but still can't understand...
23.11.2020
490views
2comments
0
Vo
Level 41
Sofia
Question about the task Number algorithms
Java Core, Level 10, Lesson 10
Resolved
It seems that everything is fine, but I guess I am missing something.I get great timing and decent memory usage in IntelliJ Idea. The results also seem to be correct. Do I miss something? Is there are corner case I am missing out? Thanks!
18.11.2020
630views
3comments
0
Rishabh Joshi
Level 9
Indore
Under discussion
Why does it not work?public class Solution { public static int min(int a, int b, int c, int d) { //write your code here int m2 = min(min(int a, int b), min(int c, int d)); return m2; } public static int min(int a, int b) { //write your code here int m1 = a < b ? a
21.11.2020
442views
4comments
0
Mihaela
Level 16
Iasi
Question about the task Positive number
Java Syntax, Level 4, Lesson 7
Resolved
Help!"Note that 0 is not a positive or negative number." ??
30.01.2019
1944views
4comments
0
Roman Grygorczuk
Level 19
Cracow
Question about the task Shortest or longest
Java Syntax, Level 7, Lesson 6
Resolved
Cannot pass third step Hi all, The program doesn't want to pass third step. I works and gave me the correct output. Any hint how to test it out? Thanks, Roman
22.11.2020
614views
2comments
0
Шарох
Level 12
Question about the task Static cats
Java Syntax, Level 6, Lesson 11
Under discussion
Hi Coders ! What should I do ? I don't know arrays.
21.11.2020
593views
4comments
0
Sylwia
Level 16
Deutschland
Resolved
String array to 2D char array Hello, I don't really understand how the 2D array works here. Why can't we take a normal array? Can someone explain this? Is there any other way to convert String array to char array? Thank you! String[] arr = { "apple", "banana" }; char[][] cs= new char[arr.length][]; for (int i = 0;
21.11.2020
358views
0comments
0
Michael
Level 10
Dresden
Question about the task R or L
Java Syntax, Level 7, Lesson 9
Resolved
The code solves the tasks with a quite easy solution, yet it does not meet the validator's expectations. Does anyone have an idea why the code does not validate?
19.10.2020
454views
3comments
0
Cristian
Level 16
Bucharest
Question about the task Playing Javarella
Java Syntax, Level 7, Lesson 9
Under discussion
I have one missing requirement. Help me, please! Thank you!package com.codegym.task.task07.task0713; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.List; import java.util.List; /* Playing Javarella */ public class Solution { public static void main(String[] args) throws Exception {
04.11.2019
1056views
4comments
0
Jason
Level 26
Rancho Cucamonga
Question about the task Reading and writing to a file: Human
Java Core, Level 10, Lesson 2
Under discussion
Is it just me or is this another time CodeGym didn't teach us a damn thing about the skills we will need to do the tasks at hand. Great Start to Section 20...Does anyone have any links or documentation that is actually useful for completing these tasks. I tried combing the questions section and didn't find anything and then I tried to just read and write some code I found in the same places hoping to get some understanding but that did not work out at al
28.10.2019
1918views
13comments
6
Nicholas Burkill
Level 3
Toronto
Question about the task Escaping characters
Java Syntax, Level 3, Lesson 6
Under discussion
help? not sure why this isn't working. seems identical to what is supposed to be printed.
21.11.2020
583views
2comments
0
Nemanja Vasiljevic
Level 11
Beograd
Question about the task Feline carnage
Java Syntax, Level 5, Lesson 5
Resolved
Three fights error?Why am I getting an error, that I need to conduct three fights, when I obviously do?
29.10.2018
2174views
4comments
4
tony
Level 20
Nis
Question about the task Feline carnage
Java Syntax, Level 5, Lesson 5
Resolved
Don't understand I don't understand this, I have 3 fights in my code, but still, there is an error saying "You need to conduct three fights." Any idea why this happens?
30.11.2018
1869views
4comments
2
Шарох
Level 12
Question about the task ConsoleReader class
Java Syntax, Level 6, Lesson 8
Resolved
Hi Coders! Where I missed return statement?
21.11.2020
540views
5comments
0
Seferi
Level 22
Question about the task Replacing numbers
Java Core, Level 9, Lesson 11
Archived
Its working for me but for some reason doesnt validate Help is appreciated
18.11.2020
463views
2comments
0
Andrew
Level 29
Seattle
Question about the task Replacing numbers
Java Core, Level 9, Lesson 11
Archived
How did you do it?I got the answer but I'm really curious how others went about the solution. I'm sure there are better/more succinct ways to solve this task. Specifically, how did you handle "12."? My crazy solution involves splitting each line into words. If the first character of a word is a number, then I split
28.02.2019
1854views
3comments
0
Denis
Level 22
Kharkiv
Question about the task Replacing numbers
Java Core, Level 9, Lesson 11
Archived
Need help Pls guys
29.06.2019
1050views
2comments
0
Rishabh Joshi
Level 9
Indore
Under discussion
I got an error in this solution. Is something wrong here?package com.codegym.task.task02.task0202; /* Where does a Person come from? */ public class Solution { public static void main(String[] args) { //write your code here Person person = new Person();; person.name = "Rishabh"; person.age = 22; person.weigh
20.11.2020
526views
1comment
0

1
...
111
112
113
114
115
...
372