Page 278 | CodeGym online Java course - Help

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
14.12.2018
1454views
4comments
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...
18.09.2019
1287views
2comments
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 ? :)
26.08.2019
1267views
4comments
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}
21.09.2019
1547views
1comment
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
21.09.2019
1337views
2comments
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?
21.09.2019
1087views
1comment
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
08.02.2019
1892views
5comments
1
Stefan Craia
Level 15
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
06.08.2019
1618views
1comment
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<>();
21.09.2019
1315views
3comments
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
20.09.2019
1028views
2comments
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 ?
30.04.2019
1722views
4comments
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
10.04.2019
1101views
2comments
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???
10.09.2019
1531views
2comments
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.
06.08.2019
1276views
3comments
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 :(
03.08.2019
1883views
2comments
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
30.10.2018
1894views
2comments
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?
08.06.2019
1644views
7comments
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.
20.09.2019
1004views
1comment
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
20.09.2019
1352views
5comments
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
18.08.2019
1129views
3comments
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?
18.09.2019
1233views
3comments
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!
17.09.2019
1067views
7comments
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.
07.09.2019
1057views
2comments
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
19.09.2019
966views
2comments
0
Gábor
Level 14
Budapest
Question about the task Remove and insert
Java Syntax, Level 7, Lesson 6
Resolved
I do not understand this error: java.lang.IndexOutOfBoundsException: Index: 5, Size: 5 I think the logic behind the code is good, but I still missing something....
19.09.2019
2230views
2comments
0
Brandon Horvatic
Level 27
Johannesburg
Question about the task File in a static block
Java Core, Level 5, Lesson 12
Under discussion
Please help with clarity on the program.. Thanks in advance This code works with the lines uncommented. I just wanted to get some clarity on all these input streams as I am having trouble grasping the concept, so if someone could please help better my below understanding. So what I understand: 1. First, the FileInputStream reads the file in byte form that is
17.09.2019
981views
1comment
0
Vartaman Ingole
Level 6
Wardha
Question about the task Seeing dollars in your future
Java Syntax, Level 4, Lesson 10
Under discussion
What's wrong with it?? import java.io.*; public class Solution { public static void main(String[] args) throws Exception { //write your code here int i = 1 ;int j = 1; char c ='$'; while (i <= 10) { { System.out.println(c); } while (j <= i ) { System.out.print(c);
30.11.2018
1828views
8comments
0
Jason Macias
Level 16
New Jersey
Question about the task Longest string
Java Syntax, Level 7, Lesson 6
Archived
Code appears to be working, but is not passing last two tests I have written this several ways, and each produced the results asked for, but it isn't passing the last two tests. Any feedback on why this is?
19.09.2019
1034views
2comments
0
Ahmed
Level 23
Amsterdam
Question about the task Task about algorithms
Java Syntax, Level 9, Lesson 11
Resolved
It should work correctly but the verifier doesn't agree :/ My code works correctly based on the requirements when I run it. But I got an error when trying to verify it. Anyone has an idea?
23.05.2019
2134views
11comments
1
Naveen Muralidoss
Level 9
Newark
Question about the task Plan to conquer the world
Java Syntax, Level 3, Lesson 8
Resolved
What is wrong?? output prints as excepcted Kevin will take over the world in 8 years. Mwa-ha-ha!
18.09.2019
1193views
5comments
0

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