Page 112 | CodeGym online Java course - Help

JESSE AITKEN
Level 8
Tampa
Question about the task Crossing the road blindly
Java Syntax, Level 4, Lesson 4
Under discussion
Why is my code failing?I'm not sure what is wrong?
12/15/20
608views
1comment
0
Syed Akash Mazhar
Level 3
Wah Cantt
Under discussion
it's showing unavailable on intelliJ Idea. says a premium subscription is required.Tasks are available on app but on his intelliJ Idea it shows not available and asks a Premium Subscription is required.
12/15/20
549views
1comment
0
Шарох
Level 12
Question about the task R or L
Java Syntax, Level 7, Lesson 9
Resolved
What ?Why it doesn't run? 😑
12/14/20
665views
5comments
0
Bart De Lepeleer
Level 30
Question about the task Your own FileWriter
Java Core, Level 9, Lesson 11
Resolved
Solution does not validate - any thoughts?Seems like all conditions are met, but solution does not validate
12/13/20
784views
3comments
0
Daniel Whyte
Level 17
Question about the task Square of a number
Java Syntax, Level 1, Lesson 8
Under discussion
Return after the method Why is it that you only sometimes need to put return after the method in order for it to go back to the main when at other times it just calls it without this?
12/13/20
493views
2comments
0
Andrei
Level 41
Question about the task Stopwatch
Java Core, Level 6, Lesson 7
Resolved
I don't understand. If thread is supposed to sleep for 2 seconds and then stop, why is it actually running in those 2 second? :-/ I think I must not be understanding correctly the way sleep works... public class Solution { public static volatile boolean isStopped = false; public static void main(String[] args) throws InterruptedException { Runner usain = new Runner("Usain", 4); Runner carl = new Run
12/14/20
607views
2comments
0
Vitalina
Level 20
Question about the task OOP: Books
Java Core, Level 5, Lesson 2
Resolved
Everything works...I don't know what codegym wants from me..Everything works...I don't know what codegym wants from me...I'm confused..
12/13/20
876views
8comments
2
MoJo
Level 23
Cairns
Question about the task Reversing a file
Java Core, Level 8, Lesson 5
Resolved
Where do the extra lines come from?I did the task and it's valid, but i tested my code and got this question now: My fileinput was: Start hi, this is a test. how are you? thank you for visiting blank blank blank end. But when i checked outcome in the textfile it was: .dne knalb knalb knalb gnitisiv rof uoy knaht ?uoy era woh
12/9/20
868views
8comments
0
Andrei
Level 41
Question about the task Arranging calls to join()
Java Core, Level 6, Lesson 5
Resolved
Where are Cat class and Kitten class getting their (super)name from? Thread class?Where are Cat class and Kitten class getting their (super)name from? Thread class?
12/11/20
813views
5comments
0
Liliane Top
Level 24
Amsterdam
Question about the task Kind Emma and the summer holidays
Java Syntax, Level 8, Lesson 8
Resolved
Almost a year later and I still do not understand how this works I do not understand the following: 1) I convert the date into a String and check if it contains a certain month if so I remove the entry. I do not get an error but the code doesn't remove any 2) I tried to use an iterator but somehow I can't get date.getMonth() to work. I do not understand why? 3) T
12/12/20
854views
5comments
0
Cristian
Level 13
Ploiesti
Question about the task Longest sequence
Java Syntax, Level 8, Lesson 6
Under discussion
Where is my mistake?Hi, guys! Where is my mistake? Thank you in advance! package com.codegym.task.task08.task0812; import java.io.*; import java.util.ArrayList; /* Longest sequence */ public class Solution { public static void main(String[] args) throws IOException { //write your code here Buf
12/9/20
802views
8comments
0
David Haines
Level 13
La Crosse
Question about the task Cat code won't compile
Java Syntax, Level 7, Lesson 12
Resolved
Can someone please explain why this compiled and verified while throwing an error? And how to make it work?the output showing is what I get when I verify, yet it verified and completed. Why? How do I get rid of the error and get the output I am expecting? Output java.lang.NullPointerException at com.codegym.task.task07.task0726.Solution.main(Solution.java:25) at sun.reflect.NativeMethodAccessorIm
7/25/20
574views
2comments
0
David Haines
Level 13
La Crosse
Question about the task Snake (Part 19/20)
Games, Level 0, Lesson 1
Resolved
What am I missing?Could somebody please tell me what is missing? And how to fix it?
11/28/20
543views
2comments
0
Ahu
Level 5
Slough
Question about the task This age doesn't work for me…
Java Syntax, Level 4, Lesson 1
Resolved
Can be a static variable age called in a non-static method? public static class Person { public int age = 20; public void adjustAge(int age) { this.age = age + 20; System.out.println("The age in adjustAge() is " + age); } } I am just confused, can someone kindly advise me why we should have this.age in
12/7/20
1059views
3comments
1
The Chief
Level 18
Question about the task Shuffled just in time
Java Syntax, Level 7, Lesson 12
Under discussion
How does line 26 work?I'm confused as to how that line works. Wouldn't the list.remove delete the first string and then make it impossible to move that string to the end? Shouldn't it be " list.remove(list.add(0)); " instead?
12/10/20
693views
4comments
0
Dyrits
Level 1
Question about the task Clew
Java Core, Level 6, Lesson 13
Resolved
Thread 4 in the threads list must implement the Message interface.What's wrong?
8/29/20
619views
1comment
1
Jurij Thmsn
Level 29
Flensburg
Question about the task Adding
Java Syntax, Level 4, Lesson 16
Resolved
for loop?I solved this task with a while loop. The conditions also allow a for loop, but I can't figure out how to to it with a for loop. Anyone knows? Thanks in advance :)
12/13/20
713views
5comments
0
Vitalina
Level 20
Question about the task GCD
Java Core, Level 4, Lesson 8
Resolved
I don't understand what else codegym wants from me...condition 2 Hi! I don't understand what else codegym wants from me... The problem is with condition 2. I would appreciate your help!
12/12/20
700views
2comments
0
Tomasz
Level 15
Warsaw
Under discussion
Tasks are not loaded into IntelliJ Task are loaded only until level 10, from 11 onwards I cannot find any task in IntelliJ, how to sort it?
12/12/20
537views
1comment
0
satish
Level 15
kadapa
Question about the task Minesweeper (Part 5/16)
Games, Level 0, Lesson 0
Under discussion
can any one explain 2nd and 4th requirements how to assign mines and how to count them
7/12/19
1601views
3comments
0
Шарох
Level 12
Question about the task Playing Javarella
Java Syntax, Level 7, Lesson 9
Resolved
Hi Coders ! Please help me !
12/10/20
684views
4comments
1
sourav bamotra
Level 20
jammu
Question about the task Promotion during political debates
Java Core, Level 6, Lesson 5
Under discussion
something new just appeared."volatile" keyword.
9/25/20
578views
1comment
0
Anitamalina
Level 18
København
Question about the task Longest sequence
Java Syntax, Level 8, Lesson 6
Under discussion
Won't accept last requirement even though I print the right result I get the right results, but I don't understand, why I don't fulfil the last requirement ? Can someone help me or explain? :)
12/11/20
405views
2comments
0
Andrei
Level 41
Question about the task Different methods for different types
Java Core, Level 5, Lesson 12
Resolved
Last requirement not met, have no idea why. Help please .Hi, I have spent about 4 hours on this program so far but it's starting to kill me. If I add input " This is a String. Value: -555000000000000000000000000000000000000000000000000000000000000000000000000000000 " in the program, nothing happens. If I add just the number: -5550000000000000000000000000
12/8/20
803views
16comments
0
Andrei
Level 41
Question about the task Displaying a stack trace
Java Core, Level 6, Lesson 3
Resolved
What is the order of execution for the for loops in each class?In my opinion this is the logic of execution for the 2 threads (main and SpecialThread): 1. main is run 2. a new thread "thread" is created. 3. thread is assigned a new SpecialThread object. 4. the new thread is started. 5. the **** line is printed. Now the confusion begins for me. In my opinion an
12/11/20
734views
7comments
0
The Chief
Level 18
Question about the task Changing functionality
Java Syntax, Level 7, Lesson 12
Under discussion
How to get the right output?When I compile my program, I'm not getting any errors but the output is just a bunch of red text. What do I have to change to get the middle 3 validation requirements?
12/9/20
721views
10comments
0
Andrei
Level 41
Question about the task My first thread
Java Core, Level 6, Lesson 3
Resolved
Why do we have to use new Thread(task).start(); instead of just task.start() ? public class Solution { public static class TestThread implements Runnable{ public void run(){ System.out.println("My first thread"); } } public static void main(String[] args) { TestThread task = new TestThread(); new Thread(task).start();
12/11/20
457views
2comments
0
Denis
Level 22
Kharkiv
Question about the task My second thread
Java Core, Level 6, Lesson 3
Under discussion
what i can do this help me pls
6/27/19
1639views
4comments
0
Andrei
Level 41
Question about the task Request parser
Java Core, Level 5, Lesson 12
Resolved
What does codegym want from me???? waaaaaa :((( the output is like in the examples provided yet it is not good. What the hell? Pls help :(((I have created the isDouble class which is from the previous FromHell exercise "Different methods for different types" which checks if a number has "." in it meaning it is a double. This class's method is used in line 75. What have I done wrong?
12/9/20
836views
10comments
0
Anitamalina
Level 18
København
Question about the task Changing functionality
Java Syntax, Level 7, Lesson 12
Resolved
NullPointerException When I run my code in VS code it works, but at codeJudge I get a NullPointerException? Does anyone know why and how to solve it?
12/9/20
553views
4comments
0

1
...
110
111
112
113
114
...
374