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Java 25
All quests
All levels
Any status
Questions about tasks
Hot
Hashirama
Level 26
Port-Harcourt
Question about the task
Census
Java Syntax
,
Level 8
,
Lesson 8
Resolved
Please what's wrong with lesson 8 tasks?
Solution please
1/21/19
2671
views
9
comments
1
Vadym Opalenyk
Level 10
Vyshneve
Question about the task
Display today's date
Java Syntax
,
Level 5
,
Lesson 12
Under discussion
who knows how to display the date
who knows how to display the date
5/20/19
1698
views
5
comments
0
Ashish RajAnand
Level 13
Bhilai
Question about the task
Part of a calculator
Java Syntax
,
Level 2
,
Lesson 2
Resolved
if i don't use static .What is use of static in method ?
package com.codegym.task.task02.task0207; /* Part of a calculator */ public class Solution { public static void main(String[] args) { int a=5; int b=7;//write your code here sum(5,7); product(5,7); } public static void product(int a,int b) { System.out.pri
10/9/18
1792
views
6
comments
0
Nicolas Huet
Level 41
Provins
Question about the task
Thread priorities
Java Multithreading
,
Level 8
,
Lesson 6
Resolved
A bug from the server??
It tells me that the task doesn't compile on the server. I have the right output, it complies at home so I guess it's a bug? Error in com/codegym/task/task28/task2805/MyThread.java on line 95 no suitable constructor found for Thread(java.lang.ThreadGroup,java.lang.Runnable,java.lang.String,long,boo
9/22/19
1504
views
1
comment
0
ddi
Level 18
Dortmund
Question about the task
Clocks
Java Core
,
Level 6
,
Lesson 7
Resolved
one condition is missing, what am i not seeing?
What am i missing?
9/19/19
1489
views
3
comments
0
Gábor
Level 14
Budapest
Question about the task
ConsoleReader class
Java Syntax
,
Level 6
,
Lesson 8
Resolved
Read and return the exact same as in the req.. but still
Maybe it is some small issue, but could not find it
8/5/19
1642
views
2
comments
0
Robert P
Level 20
Nashville
Question about the task
Transactionality
Java Core
,
Level 7
,
Lesson 10
Resolved
I don't know what they want
I just need help with the last invalidated condition. "The joinData method must remove from the allLines list all lines in the linesForRemoval list if allLines contains all the lines in the linesForRemoval list." The recommendation from the program: "Be sure that the joinData() method deletes from
12/14/18
1647
views
4
comments
0
Au Ivan
Level 17
Hong Kong
Question about the task
Display numbers in reverse order
Java Syntax
,
Level 7
,
Lesson 12
Resolved
Em...why is that lol
plz help...
9/18/19
1443
views
2
comments
0
Bartek J.
Level 13
Zielona Góra
Question about the task
R or L
Java Syntax
,
Level 7
,
Lesson 9
Resolved
Problem witch changing places
Hi I think my program is working fine, but word with letter "r" and "l" is placing to the end of Array. Can sb help ? :)
8/26/19
1416
views
4
comments
0
luna Zheng
Level 18
Ningbo
Question about the task
We don't need repeats
Java Syntax
,
Level 8
,
Lesson 8
Under discussion
Please help me!!!! The output result seems that my code is right, but i dont't know why it doesn't match the fourth requirement.
finally,Map values : {lao5=zhang, lao3=biao}
9/21/19
1709
views
1
comment
0
Yvonne
Level 7
Nairobi
Question about the task
Arithmetic mean
Java Syntax
,
Level 5
,
Lesson 5
Resolved
My Program won't even compile and I don't seem to see the issue. Please Help.
My Program won't even compile and I don't seem to see the issue. Please Help. This is the compiler message: Exception in thread "main" java.lang.NumberFormatException: null at java.lang.Integer.parseInt(Integer.java:542) at java.lang.Integer.parseInt(Integer.java:615) at Solution.main(Solution.j
9/21/19
1500
views
2
comments
0
ShirAz SiddiQui
Level 8
Karachi
Question about the task
Do we have a pair?
Java Syntax
,
Level 4
,
Lesson 4
Under discussion
What mistake i'm making in my code?
What mistake i'm making in my code?
9/21/19
1280
views
1
comment
0
kapil
Level 12
delhi
Question about the task
Catching custom exceptions
Java Syntax
,
Level 9
,
Lesson 8
Resolved
help me in finding error
please help me as i am unable to find error in my code
2/8/19
2019
views
5
comments
1
Stefan Craia
Level 3
Bucharest
Question about the task
HashMap of cats
Java Syntax
,
Level 8
,
Lesson 3
Resolved
It works-won't pass validation
THE VALIDATIONS that don't pass are: 1. The addCatsToMap() method should add all cats in the String[] cats array to the collection in accordance with the task conditions. recomandation from mentor: Be sure that the addCatsToMap() method adds all cats in the String[] cats array to the collection in a
8/6/19
1767
views
1
comment
2
Alexandru Ovcinicov
Level 15
London
Question about the task
Functionality is not enough!
Java Syntax
,
Level 10
,
Lesson 11
Resolved
Help Please! I get right results, but can not pass though. (check my two versions, both work,but not validate)
You can see two variants using break statement and other using whileController public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); HashMap myMap = new HashMap<>();
9/21/19
1548
views
3
comments
0
jawad
Level 10
Lahore
Question about the task
Create a Friend class
Java Syntax
,
Level 5
,
Lesson 7
Under discussion
what's wrong in my code
it says ";" expected line 10
9/20/19
1174
views
2
comments
0
Joy Majumdar
Level 16
Kolkata
Question about the task
Let's make the code do something useful!
Java Syntax
,
Level 9
,
Lesson 11
Resolved
I tried multiple times where I am wrong
How to copy the contents if the file itself is not there ?
4/30/19
1859
views
4
comments
0
// Java Poser
Level 18
Cincinnati
Question about the task
Sorting even numbers from a file
Java Core
,
Level 3
,
Lesson 11
Archived
Getting this validation error
. Also, What file are we supposed to be reading from? That part is unclear to me
4/10/19
1231
views
2
comments
0
Francisco González
Level 4
Question about the task
Where does a Person come from?
Java Syntax
,
Level 2
,
Lesson 2
Resolved
I'm stuck. Please help me!
I think I have declared the variable person and with it I have five variables. But no. Why???
9/10/19
1683
views
2
comments
0
Jayaraj Kamaraj
Level 18
Singapore
Question about the task
Static modifiers and kittens
Java Core
,
Level 5
,
Lesson 9
Under discussion
Can anybody help to solve this problem?
Don't know what is the issue here. Please help on this.
8/6/19
1437
views
3
comments
0
Lukas Smetana
Level 10
London
Question about the task
10 thousand deletions and insertions
Java Syntax
,
Level 8
,
Lesson 6
Resolved
HELP PLEASE - LIST
Hello, dont know how to finish removing 10000 elements from list :(
8/3/19
2024
views
2
comments
1
khushbu Nirmal
Level 7
Mumbai
Question about the task
Target locked!
Java Syntax
,
Level 4
,
Lesson 6
Resolved
why it is not passing the test cases
whats the problem in my code
10/30/18
2039
views
2
comments
2
Ymje Sköld
Level 4
Bjorko
Question about the task
Maximum of four numbers
Java Syntax
,
Level 4
,
Lesson 6
Resolved
Why won't it verify?
This computes in eclipse and here, with or without negative numbers. Am I supposed to use double? I start to think my solution might be a little convoluted. Probably don't need the array at all., can just check maxval after each input. Whoops. Either way, why won't this convoluted mess verify?
6/8/19
1827
views
7
comments
0
theCalculator
Level 3
Warren
Under discussion
I have made adjustments ie followed the instructions to the first condition although I get correct screen output, computer says wrong?
Anyone take a look at this code and help me debug. please.
9/20/19
1138
views
1
comment
0
Abu Bakker Siddiq H
Level 5
Salem
Question about the task
Arithmetic mean
Java Syntax
,
Level 5
,
Lesson 5
Resolved
Can Anyone please tell me what is the task that is not met here ?
fellow Gymnasts, can anyone explain what requirement is not met here? Thanks in advance
9/20/19
1535
views
5
comments
0
Niladri pradhan
Level 33
Mumbai
Question about the task
Mastering the static block
Java Core
,
Level 5
,
Lesson 12
Resolved
condition did not satisfied
help please thanks
8/18/19
1261
views
3
comments
0
Weichen Ouyang
Level 25
San Jose
Question about the task
Problem solving
Java Core
,
Level 9
,
Lesson 8
Resolved
This problem is driving me nuts. Please help...
How could I pass the final condition?
9/18/19
1361
views
3
comments
0
Xuecong Liu
Level 7
Australia
Question about the task
Somehow average
Java Syntax
,
Level 4
,
Lesson 16
Under discussion
My code works but doesn't verify, help me please
I've tried several tests on IntelliJ and they all worked as expected: Input: 3, 3, 3; Output: 3 Input: 3, 3, 4; Output: 3 Input: 3, 4, 5; Output: 4 Don't understand what I got wrong :( Any help would be much appreciated!
9/17/19
1287
views
7
comments
0
Henry
Level 6
Stuttgart
Question about the task
This age doesn't work for me…
Java Syntax
,
Level 4
,
Lesson 1
Under discussion
Hello
What is the right step to take? I cant think of anything.
9/7/19
1191
views
2
comments
0
Piotr Wikarski
Level 19
Birmingham
Question about the task
Square of a number
Java Syntax
,
Level 1
,
Lesson 8
Archived
Flaw in the app?
I'll do exactly what is on the question. Have the correct result, but it won't give me all green. It happened few times already. Is it a flaw in the app? I print exact words to the screen and call the method. Tried many different ways. Never vote all green. I'm not new to java. I do this level to ch
9/19/19
1122
views
2
comments
0
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