Page 59 | CodeGym online Java course - Help

Alan
Level 8
montreal
Question about the task Good or bad?
Java Syntax, Level 4, Lesson 4
Resolved
why when i take out the else function it prints out 4 times? (The number is less than 5 -The number is greater than 5- The number is equal to 5 - The number is greater than 5 why when i take out the else function it prints out 4 times? thank you! The number is less than 5 The number is greater than 5 The number is equal to 5 The number is greater than 5
10/24/21
697views
3comments
0
vamsi mokari
Level 13
Hyderabad
Question about the task Family census
Java Syntax, Level 7, Lesson 12
Under discussion
whats wrong in creating objects public class Solution { public static void main(String[] args) { List humanObj = new ArrayList(); humanObj.add(new Human("Vamsi",true,22)); humanObj.add(new Human("Vamsi1",true,22)); humanObj.add(new Human("Vamsi2",true,22)); humanObj.add(new Human("Vamsi3
10/26/21
812views
1comment
0
Chris McClinch
Level 14
Ashburn
Question about the task Binary to hexadecimal converter
Java Syntax, Level 9, Lesson 2
Under discussion
Another "It works in the IDE, but appears to fail on an unspecified parameter" issue I'll admit this isn't the most elegant solution, but it works perfectly in IDE, including with binary numbers whose lengths are not multiples of 4. When I try to validate in CodeGym, though, I get a "String index 0 out of range" error in the toHex method, which shouldn't be possible.
10/26/21
790views
4comments
0
Harinath Reddy A
Level 7
Delhi
Question about the task Dog registration
Java Syntax, Level 5, Lesson 9
Under discussion
help why are my test cases failing
3/23/19
1668views
8comments
2
Stian Eggum Tellnes
Level 15
Question about the task Number of letters
Java Syntax, Level 10, Lesson 11
Resolved
Why are the requirements not being met?Can't figure out why I'm not meeting the last two requirements here. There are 26 lines, and there are letters, a space, and a number..
10/25/21
967views
5comments
0
null
Level 0
Al Jizah
Under discussion
It works for -3,-2,-1 but for 0 and 1 it’s infinite NaN so,what to do ?import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); double x; System.out.print("x="); x = sc.nextDouble(); sc.close(); System.out.println("result:"); if (x < -3 || x > 1) { System.out.println("erro
10/25/21
851views
0comments
0
Shashikant Sharma
Level 8
Surat
Question about the task Shuffled just in time
Java Syntax, Level 7, Lesson 12
Resolved
What Next?I Somehow Managed To Remove The First 4 Elements But How Do I Add Them Now At Last. The Output of This Program is As Follows: [cat, dog, program, car] While The Desired Output is: [cat, dog, program, car, father, mother, son, daughter]
10/3/21
1165views
5comments
0
Jon Hjerting
Level 1
Oslo
Question about the task Calculating salaries
Java Core, Level 9, Lesson 11
Resolved
I am failing the last test I seem to be getting the right answer, but I guess something is wrong as I am not passing the last test. Can anyone give me a hint as to where the problem is with my code?
10/22/21
1231views
1comment
0
Banak
Level 29
Saint-Gratien
Question about the task Archiver (part 8)
Java Multithreading, Level 7, Lesson 15
Under discussion
Ladt question Could someone help me for the last condition !!
10/23/21
697views
1comment
0
Khongpak Phupkdee
Level 15
Chiangrai
Question about the task Debug, debug, and again debug
Java Core, Level 5, Lesson 12
Resolved
I don't understand when I change protected to private modifier.Why?I don't understand order command. In line 21 form Protected (the original source) I think the value of f1 form Class B send to Class A Because Class B call super(f1) (Line 30) So,f1 at Class A equal to 6(that true?) I debug ... LINE 17 this.f1 (has value equal 6) then LINE 18 initialize() call LINE
10/21/21
459views
2comments
0
Stian Eggum Tellnes
Level 15
Question about the task Task about algorithms
Java Syntax, Level 9, Lesson 11
Under discussion
For some reason I am unable to update the original array[] from main?So, this is the second version of a solution I deleted, and on none of them I was able to make the array[] from main be updated with the sorted values. Anyone able to see why?
10/22/21
574views
4comments
0
BigRatBaby
Level 20
Washington
Question about the task Symbol frequency
Java Core, Level 8, Lesson 11
Under discussion
Curious as to where i went wrong here Thank!
10/22/21
521views
2comments
0
Josephine
Level 2
Normal
Question about the task Space Invaders (Part 9/34)
Games, Level 0, Lesson 6
Under discussion
Please help ,should i need to intialize the width in Enemyfleet class java:79: error: cannot find symbol double o = ships.get(0).x + width; ^ symbol: variable width location: class com.codegym.games.spaceinvaders.gameobjects.EnemyFleet
10/21/21
510views
1comment
0
Chris McClinch
Level 14
Ashburn
Question about the task Everything you need to know about Earth
Java Syntax, Level 7, Lesson 7
Under discussion
LAND_AREA variable?I'm following the spec, but getting the following failure message: "Be sure that there is a LAND_AREA variable in the Earth class." The other three variables validate just fine. Any ideas what I'm doing wrong?
10/21/21
742views
4comments
0
Chris McClinch
Level 14
Ashburn
Question about the task Creating a two-dimensional array
Java Syntax, Level 6, Lesson 6
Under discussion
Not sure what the desired output is I've written code that populates a multidimensional array of the correct length with sub-arrays filled with the correct number of nulls, but apparently that's not what's meant by "In the main(String[]) method, initialize and fill the two-dimensional array as outlined in the task conditions". Is this
10/19/21
872views
3comments
0
Abdelrahman
Level 5
Amman
Question about the task Plan to conquer the world
Java Syntax, Level 3, Lesson 8
Resolved
Help.Anyone know why this is wrong?
1/6/21
1046views
7comments
0
Henrique
Level 41
São Paulo
Question about the task Archiver (part 8)
Java Multithreading, Level 7, Lesson 15
Resolved
help me with last condition please "The main method must call the askOperation() method to get the current operation." but i am calling it!
8/12/20
831views
7comments
0
Noob_Coder
Level 22
Springfield
Question about the task Request parser
Java Core, Level 5, Lesson 12
Resolved
actually have no idea what is asking about I think my code is pretty correct, but the only thing which could be wrong is the requirement, and it is so confusing because it doesn't give more test cases for what exactly is a right output. Need help, thx guys. My understanding is the information splits with & and will output the first line
10/16/21
964views
9comments
0
Gellert Varga
Level 23
Szekesfehervar
Question about the task Replacing numbers
Java Core, Level 9, Lesson 11
Resolved
Is Ivan Duka's comment right or not?His comment is written in this link: https://codegym.cc/quests/lectures/questcore.level09.lecture11 and there he wrote the followings: >>Attention "Replacing numbers"! . . . the example given is WRONG - I mean the number and dot immediately after is not counted as number, only when there i
10/14/21
634views
2comments
0
Rashaad A Crews
Level 5
Long Beach
Question about the task Sum of 5 numbers
Java Syntax, Level 3, Lesson 4
Under discussion
Not sure why this is failing I don't see why the last requirement isn't being met.
10/13/19
1247views
4comments
0
Alec Jensen
Level 5
Arlington
Question about the task Sum of 5 numbers
Java Syntax, Level 3, Lesson 4
Under discussion
Can someone show me a more simple way to do this?I just need to know a simpler way to do the code. I did a basic System.out.println(1 + 2); add on the next number 5 times and got the solution correct. But I know that I am doing more work than needed. Please explain how to use a better way. I read about loops? can someone explain?
12/20/19
1345views
5comments
0
Indranil Chakraborty
Level 3
United Kingdom
Question about the task Hello, StarCraft!
Java Syntax, Level 3, Lesson 4
Resolved
Goodbye, Starcraft!Pls halp😐
9/11/21
857views
5comments
0
Gellert Varga
Level 23
Szekesfehervar
Question about the task Long words
Java Core, Level 9, Lesson 11
Resolved
Ran it on a few test files and it seemed fine Maybe it's too late here (01:17) and I can't see the problem...
10/14/21
1246views
8comments
0
Albin
Level 14
Chongqing
Resolved
The CodeGym server is unavailable. Wait a little, restart IntelliJ IDEA and try again.How to solve "The CodeGym server is unavailable. Wait a little, restart IntelliJ IDEA and try again."？？？？？？？？？
12/3/20
820views
4comments
1
Seferi
Level 22
Question about the task Long words
Java Core, Level 9, Lesson 11
Resolved
It's working perfectly and I'm using FileWriter but it still complains..Help is appreciated.. Thanks.
11/19/20
1009views
8comments
0
Victor Omoha
Level 8
Raleigh
Question about the task We don't need repeats
Java Syntax, Level 8, Lesson 8
Resolved
what am i doing wrong please package com.codegym.task.task08.task0817; import java.util.HashMap; import java.util.Map; import java.util.*; /* We don't need repeats */ public class Solution { public static HashMap createMap() { //write your code here HashMap map = new HashMap(); map.put("Victor",
10/14/21
887views
4comments
0
Jason
Level 3
Ottawa
Under discussion
Why are interfaces and almost everything in Java referred to as contracts?I do not understand the use of legal jargon to describe a template or format etc within a programming language. When I write a method with parameters, I am not making a contract, I am making a template that requires that input or it wont work. Sure a contract is the same in the sense that if you d
10/1/21
522views
4comments
0
Dan
Level 26
Clarksville
Question about the task Adding a file to an archive
Java Collections, Level 1, Lesson 6
Under discussion
Unsure of what the problem is To my fellow CodeGym friends, I do not know what could possibly be wrong with my code. I have spent so long working on this, and I will admit to even cheating by looking at the solution. I fail to see any cause for my lack of validation. I hope that some of you experienced solvers out there can sho
10/11/21
779views
7comments
0
Hoist
Level 38
San Diego
Question about the task Multiplication table
Java Syntax, Level 6, Lesson 5
Under discussion
Help pls --- Error code: 10x10 Table / Array is not *initialized / instantiated.I have built the Multiplication table 3 different ways. Error code is 10x10 Table / Array is not *initialized / instantiated. No clue ... see code
10/12/21
1317views
10comments
0
Jurij Thmsn
Level 29
Flensburg
Question about the task Snake (part 18)
Java Multithreading, Level 2, Lesson 18
Resolved
How to make it faster?On my device, the snake game seems to stutter. Maybe it is too slow(it is quite old). I guess the problem is the print method? (not quite sure, though) I tried to make the print method run faster but I am not quite satisfied yet. The way I am iterating through the snake's body is bugging me, I gu
10/12/21
573views
4comments
0

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