Page 10 | CodeGym online Java course - Help

preshgerman3
Level 14
Under discussion
how to implement games how to implement games
8/2/24
222views
0comments
0
Павел Артеменко
Level 41
Krasnodar
Question about the task Chat (part 9)
Java Multithreading, Level 6, Lesson 15
Resolved
What's wrong with notifyUsers()? private void notifyUsers(Connection connection, String userName) throws IOException { Message message = new Message(MessageType.USER_ADDED, "User, called " + userName + " has been added."); for (Map.Entry connectionEntry : connectionMap.entrySet()) { if (!connectionEntry.getKey().equals
5/11/19
2597views
7comments
2
Anonymous #11533978
Level 26
Bilbao
Question about the task GCD
Java Core, Level 4, Lesson 8
Resolved
what is wrong? It gives the correct result and yet does not meet the criteria According to the revision, the code is not meeting the task requeriments. The result I get with the inputs 24 and 42 is correct (6) but somehow it does not pass the test. What is wrong? public class Solution { public static void main(String[] args) throws Exception { BufferedReader irak
8/1/24
270views
3comments
0
yuvraj bhatti
Level 1
Mumbai
Under discussion
car parking barrier make a barrier in car parking that lifts up when car is nearer and down when car is not nearer
7/31/24
218views
0comments
0
Dipankar Sinha
Level 22
United States of America
Under discussion
how to disable subscription By 16th september 2024 i will complete my annual subscription. How to disable subscription post the date.
7/31/24
210views
0comments
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task File in a static block
Java Core, Level 5, Lesson 12
Resolved
How to make it really read from a real file I've solved this task, or at least it has been validated by CodeGym as correct. I still have a question, though. The code is supposed to read lines from a real file, the path to which we need to assign as a value to the public static String field called FILE_NAME (of the file called Statics). How
7/18/24
322views
9comments
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task Binary to hexadecimal converter
Java Syntax, Level 10, Lesson 2
Resolved
One of the methods in this code is still not accepted by the validator. What am I doing wrong?I kind of put aside this task some time ago and moved on. But today I decided to catch up with some unresolved tasks and got back to this one. The code seems to work fine in general, but there is still something wrong with the toBinary(String value) method, even though it produces and outputs the ex
7/19/24
295views
3comments
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task Binary to hexadecimal converter
Java Syntax, Level 10, Lesson 2
Resolved
I wonder if I could've made it shorter I've just written the longest code in my short professional life:) It produces the expected output but I'm wondering if I could make it any simpler. The second issue is that after verification the website says, "Be sure that the toHex(String) method returns an empty string if it receives an empty s
4/18/24
391views
9comments
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task Face control
Java Syntax, Level 16, Lesson 2
Resolved
Why not this way?I've read the correct solution and see that we are expected to display the data from the file our program reads in the form of characters, not strings. I just don't understand why it cannot be done in the string form, as the requirement is technically to "display everything except periods, commas, a
5/31/24
299views
4comments
0
Mm m
Level 1
Question about the task From student to skilled slave
Java Core, Level 1, Lesson 11
Under discussion
digoprime number WAP to input a four digit number and check whether it is a digorime number or not ( a number is said to be digoPrime when its only contain Prime digit)
7/16/24
210views
0comments
0
Bob
Level 10
United States of America
Question about the task Two iPhones
Java Syntax, Level 10, Lesson 4
Under discussion
What am I missing?When I run the program, it says true. if I change one of the parameters for one of the Iphones, I get false, yet I am not meeting the second criteria?
7/14/24
231views
5comments
0
Naman Gamer
Level 1
Bangalore
Under discussion
css vss
7/12/24
222views
0comments
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task Reading a file
Java Core, Level 3, Lesson 11
Resolved
Why close the BufferedReader if I'm not using it?I wrote this code without using the BufferedReader (as I actually wasn't told to do so). But, according to the validator, I still have to close it.... So, should I use it instead of the Scanner or the InputStream? I'm slightly puzzled;)
7/2/24
331views
7comments
0
X SS
Level 25
Question about the task Binary converter
Java Syntax, Level 10, Lesson 2
Under discussion
Codegym's answer How come we can assign String binaryNumber an integer?
7/3/24
240views
2comments
0
Pratusha Mandal
Level 1
Under discussion
how to code how can I code in this app by clicking what?
7/1/24
232views
1comment
0
X SS
Level 25
Question about the task Octal converter
Java Syntax, Level 10, Lesson 2
Under discussion
End of file while parsing error:reached end of file while parsing. How can i solve this?
7/2/24
252views
1comment
0
Anonymous #11492773
Level 31
Germany
Question about the task Shall we play?
Java Core, Level 6, Lesson 13
Resolved
task is not compiled on the server Hey guys. i try to validate my solution but for some reason it keeps telling me task is not compiled on the server. any tips on what i am doing wrong is appreciated.
6/25/24
251views
2comments
0
Benjamin Joseph Lentine
Level 8
Songwon
Question about the task Price of apples
Java Syntax, Level 3, Lesson 4
Under discussion
How does += get the right answer?So, I get what it does in functionality, but I can't seem to understand how it gets the right answer here. So here is how I'm understanding this code: applePrice = 0. apple.addprice increases applePrice to 50. apple2.addPrice increases it by 100 to 150. It seems to me like the math should already
6/23/24
332views
4comments
1
Anonymous #11475584
Level 11
Hayward
Question about the task Snake (Part 19/20)
Games, Level 0, Lesson 1
Under discussion
help why is this part of my code causing problems and saying illegal start of expression for public void move (Apple apple) ? im really lost (im referring to the commented part in the Snake class inside the setDirection method)
6/23/24
231views
1comment
0
Ahmed
Level 23
Amsterdam
Question about the task Array of string lists
Java Syntax, Level 10, Lesson 11
Resolved
It should work?Anyone can help here? I think this code should work? Or i'm missing something?
5/21/19
2893views
4comments
12
lobotomic
Level 4
Prague
Question about the task Sorting three numbers
Java Syntax, Level 4, Lesson 6
Resolved
"The task does not compile on the server"Hi guys, I tried some List approach for this task and when validating I get an error "The task does not compile on the server". Is there some issue in Intelijj settings or the validator just does not except such solution and is not ready for that? So with if/else solution I gonna be ok to proceed to
6/15/24
258views
2comments
0
X SS
Level 25
Question about the task Triangular array
Java Syntax, Level 6, Lesson 6
Under discussion
IndexOutOfBounds but why What's difference between my solution and codegym's. Mine gives error?
6/20/24
258views
1comment
0
Evgeniia Shabaeva
Level 42
Budapest
Question about the task It's all relative
Java Syntax, Level 16, Lesson 5
Resolved
Why not like this?I've got a problem similar to the one already posted here. The validator does not believe I'm using the relativize() method of the Path class. I'm wondering why. I also have another question, not related to the validation process. The tasks "hints" that if I can't find the relative path between pat
6/10/24
286views
3comments
0
Solanki Dhruv
Level 18
Surat
Question about the task Debug everything under the sun
Java Core, Level 6, Lesson 13
Resolved
don't understand where is the problem???
12/16/18
2883views
17comments
0
Anonymous #11423390
Level 5
Mountlake Terrace
Question about the task There's never too much of a good thing
Java Syntax, Level 4, Lesson 5
Under discussion
I don't understand the last line of the answer The last line "while (number >0 && number < 4); confuses me. Why it's not "while (number > 0 && number < 5);"? Can someone help to explain? Thank you!
11/30/23
461views
1comment
0
Nicole Gottschall
Level 23
Germany
Question about the task Chess board
Java Syntax, Level 6, Lesson 5
Resolved
Why doesn't my solution pass the verification even though it works as it should?I ran the program and it outputs the same as the example in the task condition. However, it doesn't pass the verification. More precisely it is wrong for number 3. and 4. Am I missing something else? Looking forward to your help!
1/26/22
558views
2comments
0
Andrea
Level 20
Question about the task Whales and cows
Java Core, Level 2, Lesson 2
Resolved
Why is this not correct? I specifically met the 5th requirement: I overridden the getName method to say "I am not a cow, I am whale" and that what the output says: public static class Whale extends Cow { public String getName() { return "I'm not a cow. I'm a whale";} } Why is the validator not accepting this?
8/22/19
1421views
6comments
1
Nic
Level 14
London
Question about the task Whales and cows
Java Core, Level 2, Lesson 2
Resolved
Unable to satisfy the fifth requirement, but the solution displays fine Could you please help me see where I've gone wrong? Thanks.
7/16/19
1297views
3comments
0
Brentachii
Level 13
United States of America
Question about the task Price of apples
Java Syntax, Level 3, Lesson 4
Resolved
it appears to work so why is it wrong?Hi there, I added the sout on line 11 so that when I run it I can see the results of the increases by the passed-in value I would appreciate it if anyone could tell me why is this wrong? thanks
11/22/21
935views
6comments
1
Jesufemi Adejare
Level 20
Question about the task Stack trace revisited
Java Syntax, Level 15, Lesson 2
Under discussion
Stack Trace. what am I missing?what am i missing here. array length -1 is the top element in the stack. the method that called the top stack element should be arraylength -2 , so why is this not validating ? in the code gym solution they used [2] for everything. That doesnt make much sense to me. if there are like 5 method tha
6/4/24
304views
5comments
0

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