Page 21 | CodeGym online Java course - Help

Justin Smith
Level 41
Greenfield, USA
Question about the task Calling a static method
Java Collections, Level 5, Lesson 4
Under discussion
I don't understand the solution In the previous lesson: https://codegym.cc/quests/lectures/questcollections.level05.lecture03 They use the following block of example code: class Zoo<T> { ArrayList<T> pets = new ArrayList<T>(); public T createAnimal() { T animal = new T(); pets.add(animal) return anima
11/18/22
758views
5comments
0
Abe
Level 41
Salt Lake City
Question about the task Wildcards
Java Collections, Level 5, Lesson 8
Resolved
Help!! Another one I just can't figure out. I believe this task is looking for something very specific and I cannot figure out what that is (or there is a bug). Has anyone else passed this task? If so, could you give me a little push to help me understand what exactly the 3rd requirement is looking for?
11/19/19
1659views
3comments
1
Andrei
Level 41
Question about the task Collections & Generics
Java Collections, Level 5, Lesson 6
Resolved
Can someone please explain why I need 2 < T > before and after ArrayList?So in line 16 I have the method declaration for newArrayList. For it to be accepted, it needs < T > before and after ArrayList. Please let me know if I have understood this correctly. The second < T > is the return type of the ArrayList. So this method will return an ArrayList that con
7/13/21
1083views
7comments
0
Justin Johnson
Level 31
Clearwater
Question about the task Threads of a string or stringy threads? That's the question
Java Multithreading, Level 2, Lesson 5
Resolved
Can someone help me please and thank you?In my code,under the OurUncaughtExceptionHandler class, I have literal strings in place for the StringIndexOutOfBounds info. I need help getting this string from the parameters. If anyone has a solution I could look at, I would appreciate it. Thanks.
3/21/20
1806views
5comments
2
Bertalan
Level 10
Question about the task Giant cities
Java Syntax, Level 7, Lesson 5
Under discussion
the answer to this problem is explained in the next lesson The answer provided by the correct solution is explained in the next lesson, from what I can see..
10/7/23
373views
0comments
0
Deniz Karadal
Level 1
Freinsheim
Question about the task Bug in equals/hashCode
Java Multithreading, Level 1, Lesson 5
Under discussion
Any hint which I miss on this?I need an another eye which needs to put me in the right direction. I simply miss a simple point but have not yet found it.
9/24/20
831views
1comment
1
FelixUjo
Level 35
Gijón
Question about the task Sequential file output
Java Core, Level 6, Lesson 13
Resolved
I can't find a solutions. I have tried all methods to check if the thread has started.I can't find a solutions. I have tried all methods to check if the thread has started.
10/8/23
377views
1comment
0
matemate123
Level 50
Kraków
Question about the task Adding logging to a class
Java Collections, Level 4, Lesson 10
Resolved
No idea how to log it I solved task but still I don't know how to physically log information to the file? I had this error: Maybe someone know what to do because like couple times before 0 information about proper and actual library to download.........
10/7/23
627views
3comments
0
Franek
Level 29
Torun
Question about the task AmigoSet (part 2)
Java Collections, Level 4, Lesson 15
Archived
To initialize the map field, use a constructor that lets you pass the initial capacity.Can someone explain what shoud I do here? What initial capacity ?
7/11/19
1871views
2comments
0
Sornam Ravi
Level 5
Bangalore
Question about the task Positive and negative numbers
Java Syntax, Level 4, Lesson 4
Under discussion
where to learn about bufferedReader in the course Could you please let me know where to learn about bufferedReader in the course
10/7/23
388views
1comment
0
Inferno
Level 5
Rewa
Question about the task To work or not to work? That is the question
Java Syntax, Level 3, Lesson 6
Under discussion
Requirements error I did the same thing.Why is requirment not complete
10/2/23
432views
3comments
0
Bhargav
Level 7
Mountain View
Question about the task Rule of the triangle
Java Syntax, Level 4, Lesson 4
Resolved
What is wrong with this code? Triangle without specified sides code isn't working!I don't understand what is wrong with the code listed below, help would be appreciated! The last requirement for the code is not passing, and I do not see what is wrong with my code. It should have come up with some sort of compiler error if it was purely syntax related, right? Not too sure, and I d
12/29/20
1016views
5comments
0
FelixUjo
Level 35
Gijón
Question about the task Exception invasion
Java Core, Level 4, Lesson 8
Under discussion
I do not know which exceptions are the same I do not know which exceptions are the same
9/18/23
403views
6comments
0
jamuna
Level 18
tirunelveli
Question about the task Different methods for different types
Java Core, Level 5, Lesson 12
Resolved
i dont know why im getting exceptions after handling it any one can explain please
9/6/23
420views
4comments
0
Shraddha Lambat
Level 20
Mumbai
Question about the task Binary to hexadecimal converter
Java Syntax, Level 11, Lesson 1
Resolved
for converting hex to binary, to check the digits and letters which one is better switch or regular exp as regular exp not cover the toBinary(String) method contains any character other than digits from 0 to 9 or lowercase Latin letters from a to f, then the method returns an empty string.
9/7/23
424views
2comments
0
Shraddha Lambat
Level 20
Mumbai
Question about the task Correct order
Java Syntax, Level 9, Lesson 1
Resolved
how to change the value of array public static void reverseArray(int[] array) { //write your code here int[] ar=new int[array.length]; for (int i=array.length-1;i>=0;i--) { ar[(array.length-1)-i]=array[i] ; } printArray(ar); }
9/8/23
736views
4comments
0
Shraddha Lambat
Level 20
Mumbai
Question about the task Two iPhones
Java Syntax, Level 13, Lesson 4
Resolved
Why its fail, output is currect if (!(this.model.equals(iphone.model)) && !(this.color.equals(iphone.color)) && !(this.price==(iphone.price))) { b=false; }
9/14/23
429views
2comments
0
FelixUjo
Level 35
Gijón
Question about the task Horse racing
Java Core, Level 6, Lesson 5
Resolved
I do not understand why it does not validate it. The result seems correct.I do not understand why it does not validate it. The result seems correct.
9/30/23
431views
3comments
0
Aditya Sinha
Level 17
Bangalore
Question about the task Bridges
Java Core, Level 4, Lesson 8
Under discussion
Not able to fix this package com.codegym.task.task14.task1409; public class Solution { public static void main(String[] args) { println(new WaterBridge()); println(new SuspensionBridge()); //println(new SuspensionBridge()); //println(new SuspensionBridge()); } public static v
2/16/19
2036views
6comments
1
Bogdan Codreanu
Level 23
Question about the task Bridges
Java Core, Level 4, Lesson 8
Resolved
can someone help please i
7/15/19
2167views
5comments
1
Denis
Level 22
Kharkiv
Question about the task Bridges
Java Core, Level 4, Lesson 8
Under discussion
Lat condition. What i must be change?help me pls with solution
6/26/19
1463views
2comments
1
shovan
Level 22
Kolkata
Question about the task Useless abstractions
Java Core, Level 2, Lesson 12
Resolved
cant understand failing condition ::::::You should be able to create a Horse object
6/10/19
1719views
3comments
1
Dương Tiến Đạt
Level 41
Ha Noi City
Question about the task Aggregator (part 8)
Java Collections, Level 8, Lesson 15
Under discussion
Cached version does not work Cached version The cached version in the link above does not contain any element with the "jobs-search-result-item" class. Can anyone help me with this?
4/25/23
438views
3comments
0
FelixUjo
Level 35
Gijón
Question about the task Request parser
Java Core, Level 5, Lesson 12
Under discussion
I don't know what to do.I do not understand the example outputs. They show different things.
9/24/23
330views
1comment
0
Niladri pradhan
Level 33
Mumbai
Question about the task Refactoring (part 13)
Java Multithreading, Level 5, Lesson 16
Resolved
Help Please Help
11/4/19
1118views
4comments
0
baked_turkey
Level 6
Question about the task Three numbers
Java Syntax, Level 3, Lesson 5
Under discussion
Problem with output For some reason it is not printing the right solution, but I think my logic is correct? What did I do wrong?
9/24/23
370views
1comment
0
Dipankar Sinha
Level 22
United States of America
New
method lesson quiz method lesson quiz answers please. some answer that i chose was wrong. from where the correct answer could be referred.
9/23/23
309views
0comments
0
Cristian
Level 13
Ploiesti
Question about the task Make a family
Java Syntax, Level 8, Lesson 11
Resolved
What is wrong here? Thank you so much! package com.codegym.task.task08.task0824; import java.util.ArrayList; /* Make a family */ public class Solution { public static void main(String[] args) { Human grandf1 = new Human(true, 78, "Gheorghe", new ArrayList()); Human grandf2 = new Human(true, 66, "Marin", new ArrayL
12/22/20
1406views
4comments
1
Ramen
Level 23
South Lake Tahoe
Question about the task What's in the folder?
Java Collections, Level 1, Lesson 4
Under discussion
Files.walk(path)How do I solve this problem using Files.walk(path) instead of Files.walkFileTree()? Why isn't this working?
9/14/23
324views
1comment
1
catalin1989
Level 37
Question about the task Longest sequence
Java Syntax, Level 14, Lesson 5
Under discussion
Why I can't use "==" operator with ArrayList with list elements larger that 127 and have to use Object.equals(list.get(j), list.get(j+1))?Create a list of numbers. Use the keyboard to add 10 numbers to the list. Display the length of the longest sequence of repeating numbers in the list. This are the required conditions. This is my code. It works, but I don't understand something. In the while loop, first I tried to compare directly t
9/21/23
330views
2comments
0

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