Page 14 | CodeGym online Java course - Help

In Ho Kwon
Level 1
Question about the task Binary to hexadecimal converter
Java Syntax, Level 9, Lesson 2
Resolved
toBinary Hello, The result is correct but not pass the task requirements. I think i am missing some details Error message: Be sure that the toBinary(String) method correctly converts the string representation of a hexadecimal number to the string representation of a binary number. Thank you.
1/20/24
572views
2comments
0
Denis
Level 22
Kharkiv
Question about the task Encryption
Java Core, Level 8, Lesson 11
Under discussion
help me pls need help
6/29/19
1551views
4comments
2
Bashka
Level 4
Russia
Question about the task Maximum of entered numbers
Java Syntax, Level 4, Lesson 5
Under discussion
Ups... Hello! Please help me solve it, I'm stuck, I can't do it myself...
4/2/24
350views
5comments
0
Iasu
Level 18
Question about the task Number of letters
Java Syntax, Level 10, Lesson 11
Under discussion
Why am I getting "null" and not the integer "0"....I´m getting "null" and not the number "0"... I have tried so many times now, and it has to do with if statement "map.put(x, 1)" input: Lily Charlie Mia Jacob Sophia Alfie Isabella Freddie Grace Oscar output: a 9 b 2 c 4 d 2 e 6 f 2 g 1 h 2 i 7 j 1 k null l 6 m 1 n null o 3 p 1 q null r 4 s 3 t n
5/18/19
1899views
7comments
0
Christy
Level 5
Question about the task Last digit of a number
Java Syntax, Level 2, Lesson 1
Under discussion
Why did only 2/3 pass for the modulo task?I wrote the following below but I got 2/3 checks passed and I'm not sure why I didn't get 3/3 checks passed. Does anyone have any insight as to why? int last digit; lastDigit = number % 10;
3/5/24
406views
3comments
0
Amira Alshaar
Level 50
Under discussion
Issue with opening tasks in IntelliJ IDEA Subject: Issue with Opening Tasks in IntelliJ IDEA Dear CodeGym Support Team, I hope this email finds you well. I am writing to report an issue I have encountered while using CodeGym within IntelliJ IDEA. Despite the tasks being available, I am unable to open them. The task remains stuck in the
4/14/24
274views
1comment
0
Niladri pradhan
Level 33
Mumbai
Question about the task Archiver (part 8)
Java Multithreading, Level 7, Lesson 15
Resolved
last condition The error shows "If any exception other than a NoSuchZipFileException occurs, then display "An error occurred. Please check the entered data." .please help
12/5/19
1683views
8comments
0
nina fatahi
Level 4
Question about the task Three numbers
Java Syntax, Level 3, Lesson 2
Under discussion
why isnt my code working package en.codegym.task.pro.task03.task0305; import java.util.Scanner; /* Three numbers */ public class Solution { public static void main(String[] args) { //write your code here Scanner s = new Scanner(System.in); int n1 = s.nextInt(); int n2 = s.nextInt();
4/10/24
287views
1comment
0
FelixUjo
Level 35
Gijón
Question about the task Chat (part 10)
Java Multithreading, Level 6, Lesson 15
Under discussion
I am blocked.I don't see the error. I think I have tried everything.
3/31/24
346views
6comments
0
Danila Hnidko
Level 8
Philadelphia
Question about the task Utility class: part 2
Java Syntax, Level 8, Lesson 0
Under discussion
Why i cant run it? Just paid for subscription and the first thing i see " Unable to run"
4/1/24
370views
3comments
0
PQK
Level 6
United States of America
Question about the task Combining arrays
Java Syntax, Level 5, Lesson 1
Resolved
Task Cannot Be Passed !!?Code not working loll 🤬😭
3/24/24
368views
6comments
2
Srividya
Level 3
Bangalore
Question about the task As simple as 2+2
Java Syntax, Level 1, Lesson 8
Resolved
Write a program that calls the sum method with the arguments 2 and 2.Hi, I have tried all possible command lines , but I could not find the solution, Please help. public class Solution { public static void main(String[] args) { int a=2; int b=2; int result=(c); } and then, also tried, public class Solution { pu
9/25/18
6255views
8comments
0
Alban Pajova
Level 3
Chicago
Question about the task Parenthetical brainteaser
Java Syntax, Level 3, Lesson 4
Under discussion
Help with Answer To solve the question start with looking into the factors of 382. That will tell you where the first paranthesis goes.
5/3/20
1655views
6comments
3
Fernando P Spitaliere
Level 6
Atlanta
Question about the task Price of apples
Java Syntax, Level 4, Lesson 1
Under discussion
Just clarifying: The purpose of the method is to add up EACH new apple_object price, and not to display the price of the last apple_object. It wasn't difficult for me to reference the Class's variable, and to assign it the variable passed as argument. My difficulty was to understand what it was asked of me to do with it from the description statement. I mistakenly thought it was to print the last known price, not to accumulate all the p
2/1/19
2588views
5comments
6
Nathan Samson
Level 5
United States of America
Question about the task Positive and negative numbers
Java Syntax, Level 3, Lesson 7
Under discussion
What am i doing wrong here?What am i doing wrong here?
6/26/23
468views
2comments
0
Kiran Kumar Alisam
Level 1
Erie
Under discussion
duplicates public class Solution { public static void main(String[] args) throws Exception { // Read strings from the console and declare an ArrayList here ArrayList list = new ArrayList(); BufferedReader r = new BufferedReader(new InputStreamReader(System.in)); for(int i=0;
3/20/24
321views
1comment
0
Christy
Level 5
Under discussion
Help with this code Can someone help with this and constructively criticize.. I have also included the program I wrote which is very basic but I'm trying to solidify my knowledge on if else statements and loops. I want to write a program that: - takes the user's input - Both integers must be greater than 0. - accepts
3/18/24
397views
3comments
0
Ailana
Level 2
San Carlos
Question about the task One cat isn't enough
Java Syntax, Level 2, Lesson 3
Under discussion
Help plz as fast as u can it says that I didn't make 2 variables but everything else is correct.this is my code public class Solution { public static void main(String[] args) { Cat kitty = new Cat();
8/11/20
703views
3comments
0
Rich Piske
Level 30
United States of America
Question about the task Make a word chain
Java Multithreading, Level 2, Lesson 9
Under discussion
I was really happy with my solution. HOW is it wrong?This has been probably the most frustrating chapter yet with validation. I've tested numerous data sets with my algorithm. It tries starting with all words in the list and returns the longest result. It's worked with everything I've thrown at it, even the ones you guys have suggested. I think th
3/6/24
398views
4comments
2
PQK
Level 6
United States of America
Question about the task Conscription
Java Syntax, Level 3, Lesson 0
Resolved
Is this code acceptable ?I wrote this code for this question and it achieved the desired output stated in the question. But when I verify it, the code was wrong as the last requirement was not met even though the input age (22) is within the specified range. My code also shows that nothing will be displayed if the input age
3/3/24
576views
3comments
2
Yomi Addey
Level 8
Baltimore
Question about the task Arithmetic mean
Java Syntax, Level 5, Lesson 5
Under discussion
I'm having trouble passing tasks 3,4,and 7 Not sure if it's the way I organized my code or...? But, any help will be greatly appreciated!
2/19/21
826views
2comments
0
Jack Winning
Level 6
Nottingham
Question about the task Reverse
Java Syntax, Level 6, Lesson 3
Under discussion
Help on if statement I've tried a few ways now, but it seems whatever I put inside the if statement, doesn't get recognised when I try to run it. it either says symbol not found or 'n may not have been initialized '. Any advice please?
2/27/24
331views
3comments
0
Justin Smith
Level 41
Greenfield, USA
Question about the task Archiver (part 13)
Java Multithreading, Level 7, Lesson 15
Under discussion
Can you move the copyData line outside of the while loop?I already completed the task, but after that I was looking at the code and I thought it seems really inefficient to be writing the entire ZipInputStream to a dummy copy on every iteration of the while loop. If it's a large archive this could really bog down the process. I was wondering if it would w
4/24/22
596views
1comment
0
Bashka
Level 4
Russia
Question about the task Maximum of entered numbers
Java Syntax, Level 4, Lesson 5
Under discussion
I need help!))) I can't solve this problem....)
2/26/24
268views
1comment
0
Niki Niki
Level 2
banglore
Under discussion
what is the error in this program import java.io.*; public class main{ public static void main(String[] args) throws IOException { FileReader file =new FileReader("C:\\a.txt"); BufferedReader fileInput = new BufferedReader (file); for( int counter=0;counter<3;counter++) System.out.pr
2/25/24
305views
1comment
0
FelixUjo
Level 35
Gijón
Question about the task Black box
Java Multithreading, Level 4, Lesson 4
Under discussion
I don't know what else to try.I don't know what else to try.
2/18/24
325views
6comments
0
Jack Winning
Level 6
Nottingham
Question about the task Second smallest number entered
Java Syntax, Level 4, Lesson 5
Under discussion
I seem to be getting the correct output but not passing all the requirements.can any shed some light on this?
2/24/24
298views
1comment
0
Jack Winning
Level 6
Nottingham
Under discussion
Why is the while argument !isExit on the correct solution?I can understand the rest of the solution, but I don't understand why the argument for 'while' is !isExit. if boolean isExit = false, then surely !isExit = true and therefore the while loops stops straight away? Can someone clarify for me please?
2/22/24
278views
1comment
0
Aditya Sinha
Level 17
Bangalore
Question about the task Going national
Java Syntax, Level 8, Lesson 11
Resolved
Failing in last condition I am checking if last word is going to print ,then don't print extra space,still it is failing.Can someone check
1/23/19
2718views
11comments
1
solewap
Level 3
Poland
Question about the task Triangle
Java Syntax, Level 3, Lesson 6
Under discussion
Why my ternary bugs out after ":" ?System.out.println( isTriangle ? TRIANGLE_EXISTS : TRIANGLE_DOES_NOT_EXISTS );
2/18/24
313views
2comments
0

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