Page 77 | CodeGym online Java course - Help

p saraf
Level 2
Question about the task Implement the print method
Java Syntax, Level 2, Lesson 1
Under discussion
what happened in this code can someone explain me this code ? please what happened in this code can someone explain me this code ? please
1/29/21
611views
1comment
0
Oliver Heintz
Level 18
Mustang
Question about the task Symbol frequency
Java Core, Level 8, Lesson 11
Resolved
It makes sense to me, but doesn't pass Using TreeMap to auto-sort. This is basically the way I did the earlier tasks where you count letters and spaces. I waited until the print statement to cast into a character in case that messed up the TreeMap sorting since I don't know how that works. Why is it that every task here now makes me w
5/13/21
1244views
9comments
0
Ramen
Level 23
South Lake Tahoe
Question about the task Task No. 6 about integer type conversions
Java Syntax, Level 10, Lesson 4
Under discussion
why does (short) 150,000 print 18,928 I solved the task, but I'm not sure how casting 150,000 as a short turns the number into 18,928.
5/14/21
517views
1comment
0
Andrei
Level 41
Question about the task 2048 (Part 12/18)
Games, Level 0, Lesson 2
Resolved
What is wrong with my moveRight, up, down algorithm?My code is a loop, the mentor's solution is calling manually as needed. Am I doing something wrong? Please ignore the break in moveUp method, I was testing something private void moveLeft(){ boolean isNumberNeeded = false; for (int[] row : gameField) { boolean com
5/14/21
972views
1comment
1
John
Level 17
Mansfield
Question about the task Functionality is not enough!
Java Syntax, Level 10, Lesson 11
Under discussion
Help what's wrong if the uaer type empty name then my program tellla to put(id,null) so i can still display the number as said by the condition but it's not working :(
5/14/21
999views
12comments
0
John
Level 17
Mansfield
Question about the task Task about algorithms
Java Syntax, Level 9, Lesson 11
Under discussion
Please someone explain the algorithm I just finished this task but then I'm confused how it works
5/2/21
713views
9comments
0
Zach
Level 22
Fort Collins
Question about the task Functionality is not enough!
Java Syntax, Level 10, Lesson 11
Under discussion
Second and fifth tasks not passing ( but I clearly have output)? package com.codegym.task.task10.task1019; import java.io.*; import java.util.HashMap; import java.util.Map; /* Functionality is not enough! */ public class Solution { public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStr
5/13/21
564views
1comment
0
Ali Diksin
Level 3
Bispham
Question about the task Where does a Person come from?
Java Syntax, Level 2, Lesson 2
Resolved
How do i create a person object?I cant fulfill this requirement In the main method, create a Person object and immediately assign a reference to it to the variable person. someone please help me
5/13/21
1083views
2comments
0
Dan Ursu
Level 27
Question about the task Symbol frequency
Java Core, Level 8, Lesson 11
Under discussion
Doesn't work, and i dont understand why. Help me please Doesn't work, and i dont understand why. Help me please
5/12/21
642views
4comments
0
Vo
Level 41
Sofia
Question about the task Log parser (part 1)
Java Collections, Level 7, Lesson 15
Resolved
Can anyone give me a hint?According to the verification I am only failing when both dates are null. Any suggestions why is it like that ?
5/7/21
752views
3comments
0
Maria
Level 22
Moscow
Question about the task Building a file
Java Core, Level 8, Lesson 11
Resolved
Where is the problem? NOT SOLVED!I have been tested with different path and folders - all ok!
4/30/21
984views
20comments
0
Prop
Level 11
Englewood
Question about the task Console-based piggy bank
Java Syntax, Level 5, Lesson 12
Resolved
I don't understand why the console outputs an error based on the placement of "int num = Integer.parseInt(input);". If I place it right after the input string from bufferedreader, there is an error. If I place it after logic/code and before adding to sum, there is no error. There doesn't seem to nee public class Solution { String input = reader.readLine(); int num = Integer.parseInt(input); vs. int num = Integer.parseInt(input); sum += num; }
5/11/21
653views
4comments
0
Maria
Level 22
Moscow
Question about the task Picking out numbers
Java Core, Level 9, Lesson 5
Resolved
Why??? Please, help me understand whats wrong with Code G verification...It is not first task, when verification is not passed, the same problem with 1825 task. Code gym, please fix that In one case it is not pass 3 and 4 requirements. in second - program to long.. very disappointed -_-
5/12/21
775views
3comments
0
Roy
Level 22
Bangkok
Question about the task Expressing ourselves more concisely
Java Syntax, Level 7, Lesson 6
Archived
Annoying bug in this one 1. Declare a string list variable and immediately initialize it. Found an annoying bug in this one, as it needs to be declared as; ArrayList<> xxx = new ArrayList<>(); I personally used the List<> xxx = new ArrayList<>(); but this will not let it pass. (its even been mentio
4/17/19
1896views
9comments
7
Richard Han
Level 4
Lipa
Question about the task What's the cat's name?
Java Syntax, Level 4, Lesson 2
Under discussion
How to call an object variable?please help, for I do not understand
9/9/18
2736views
10comments
0
John
Level 17
Mansfield
Question about the task Number of letters
Java Syntax, Level 10, Lesson 11
Under discussion
can i get a clue?I can't think of a solution sorry -_- (I'm thinking to declare a counter variable for each letter of the alphabet but that seems not efficient)
5/11/21
589views
2comments
0
Pahunchik
Level 8
Moscow
Question about the task Flip the array
Java Syntax, Level 7, Lesson 4
Under discussion
Please help to understand what's wrong The solution cannot pass the first and last points check.
5/11/21
1048views
2comments
0
Francesco Bertolini
Level 3
Question about the task Minesweeper (Part 11/16)
Games, Level 0, Lesson 0
Under discussion
Check fail On line 79 I keep failing the check do call gameOver() even though I put the call in the (I think) correct section. If I run the game it behaves correctly. Any thougths?
1/29/21
792views
0comments
0
Andrei
Level 41
Question about the task Determining locking order
Java Multithreading, Level 7, Lesson 6
Under discussion
Can someone please explain in short if possible the logic of the solution? I don't understand why in main, System.out.println(isLockOrderNormal(solution, o1, o2)); if I change the order, it always returns true. public class Solution { public void someMethodWithSynchronizedBlocks(Object obj1, Object obj2) { synchronized (obj1) { synchronized (obj2) { System.out.println(obj1 + " " + obj2); } } } private static volatile boolean flag = false
5/10/21
639views
2comments
0
Cristian
Level 16
Bucharest
Question about the task Neo
Java Core, Level 3, Lesson 11
Under discussion
What's wrong with my code? Thank you very much! package com.codegym.task.task13.task1320; /* Neo */ public class Solution { public static void main(String[] args) throws Exception { System.out.println(Matrix.NEO); } static class Matrix { public static DBObject NEO = new User().initializeIdAndName(1, "Neo"); }
5/10/21
630views
2comments
0
The Chief
Level 18
Question about the task Functionality is not enough!
Java Syntax, Level 10, Lesson 11
Under discussion
Why am I getting a Number Format Exception?The compiler says that my code has a number format exception. Why?
5/8/21
598views
2comments
0
Kent Hervey
Level 19
Question about the task Expressing ourselves more concisely
Java Syntax, Level 7, Lesson 6
Archived
List Interface not working Sometimes the hardest part is figuring out the requuirements For requirement #1 I used List listOfStrings = new ArrayList(); codegym.cc rejected that I will try changing to ArrayList listOfStrings = new ArrayList();
11/6/19
1471views
3comments
1
Dwight Burrow
Level 3
Minnetonka
Question about the task Minimum of three numbers
Java Syntax, Level 2, Lesson 8
Under discussion
I'm missing something so many things I keep checking solution to find out there is something new that they didn't go over in the lessons. it's just new and random.
5/8/21
638views
1comment
0
Niranjan Soni
Level 15
Bangalore
Question about the task 10 thousand deletions and insertions
Java Syntax, Level 8, Lesson 6
Under discussion
out of Bounds Exception How to fix out of bounds Exception at line 56.
9/30/18
3727views
21comments
2
Gellert Varga
Level 23
Szekesfehervar
Resolved
What does it mean: synchronized (MyClass.class) ?This code was included in the link below, but there was no explanation for it. Does this keep the whole class out of the other threads? I mean: the whole class = all static methods are locked? But only the static ones? https://codegym.cc/quests/lectures/questcore.level07.lecture03
5/5/21
894views
11comments
0
Gera
Level 3
Hamburg
Under discussion
Was ist falsch? Die Methode gibt doch die kleinste Zahl aus?package de.codegym.task.task02.task0216; /* Die kleinste aus drei Zahlen */ public class Solution { public static int min(int a, int b, int c) { int m = 0; if ((a < b) && (a < c)) m = a; else if ((b < a) && (b < c)
5/6/21
574views
2comments
0
Xavier
Level 17
Pearland
Question about the task Making the top ten
Java Core, Level 2, Lesson 12
Resolved
It seems like it should work.According to everything I read about overloading, this should work, but the validation claims that the transformValue method is not doubling the number when it is, and that the main method should only call transformValue once, which it does.
5/6/21
736views
3comments
0
Dwight Burrow
Level 3
Minnetonka
Question about the task Family relations
Java Syntax, Level 2, Lesson 2
Under discussion
A bit of an explanation?The husband and wife part I wouldn't be able to understand myself. I have two questions: Q1. Is woman.husband = man; the same as: public static class Woman { public Man husband = man; } Q2. Will I learn more about this later?
5/6/21
778views
2comments
0
Pahunchik
Level 8
Moscow
Question about the task Task about algorithms
Java Syntax, Level 5, Lesson 12
Under discussion
Why can't it pass the test?My program works and shows the maximum number of N numbers. Why can't it pass 5th point of the test?
4/22/21
674views
2comments
0
Yunus Can
Level 2
Under discussion
Premium ja oder Nein ? Lohnt sich die Premium version ? sie ist gerade im angebot für 90 euro
4/4/21
767views
2comments
0

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