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  • All questions
  • Aditya Ashtikar
    Level 8
    Kaul
    Question about the task Census
    Java Syntax, Level 8, Lesson 8
    Resolved
    One Criteria is not getting satisfied. Couldn't understand the problem please help!Tried different approaches for this problem, nothing working for one requirement while verification, take some time off your 100k job and please help.
    • 11.08.2018
    • 2248views
    • 4comments
    0
  • Johannes
    Level 27
    Centurion, Pretoria
    Question about the task Only for the rich
    Java Syntax, Level 8, Lesson 8
    Resolved
    Strange compiler error ? Please view w
    • 08.03.2020
    • 961views
    • 2comments
    0
  • Caden J
    Level 2
    Atlanta
    Question about the task Even to the moon!
    Java Syntax, Level 2, Lesson 8
    Under discussion
    I just don't understand everything. It's just all confusing.I don't know at all what I'm supposed to do.
    • 08.03.2020
    • 931views
    • 1comment
    0
  • Arun
    Level 17
    Tirupati
    Question about the task R or L
    Java Syntax, Level 7, Lesson 9
    Resolved
    Help how to create logicnew methods involved in this task, which was never discussed previous lessons, so pls give the code for fix method...
    • 20.02.2020
    • 1398views
    • 4comments
    0
  • Abdul
    Level 20
    Omaha
    Question about the task Robot wars
    Java Core, Level 3, Lesson 11
    Resolved
    Please help, i don’t know what i'm doing wrong. I can't seem to be passing the last requirement.
    • 29.11.2019
    • 1726views
    • 2comments
    1
  • Goran
    Level 41
    Belgrade
    Question about the task We don't need repeats
    Java Syntax, Level 8, Lesson 8
    Under discussion
    What is wrong with this idea public static void removeFirstNameDuplicates(Map map) { HashMap copy = new HashMap(map); for (Map.Entry pair : copy.entrySet()) { String value = pair.getValue(); removeItemFromMapByValue(map,value); } } I dont understand why this solution dont wor
    • 06.03.2020
    • 1228views
    • 3comments
    0
  • Luca Hofmann
    Level 19
    Hamburg
    Question about the task OOP: Fix inheritance problems
    Java Core, Level 5, Lesson 2
    Under discussion
    Almost got it .. almostHow ois the firth condition still failing ?
    • 23.02.2020
    • 1177views
    • 3comments
    0
  • nan
    Level 9
    Lorient
    Question about the task Only for the rich
    Java Syntax, Level 8, Lesson 8
    Under discussion
    why it dosen't worki don't understand
    • 01.01.2020
    • 979views
    • 3comments
    0
  • Natalia
    Level 7
    Munich
    Question about the task Even and odd digits
    Java Syntax, Level 6, Lesson 5
    Under discussion
    Can anyone spot the bug pls?Last condition not met...
    • 07.03.2020
    • 1050views
    • 4comments
    0
  • Przemek null
    Level 8
    Question about the task Closest to 10
    Java Syntax, Level 4, Lesson 4
    Under discussion
    output looks good butbut I can't solve the task and I have no idea why? can please help me
    • 06.03.2020
    • 1163views
    • 2comments
    0
  • Sandeep shukla
    Level 2
    Question about the task I think being a programmer is cool
    Java Syntax, Level 0, Lesson 3
    Under discussion
    Where I am doing wrongWhere I am doing wrong
    • 28.09.2019
    • 918views
    • 2comments
    0
  • Liliane Top
    Level 17
    Amsterdam
    Question about the task All that moves
    Java Core, Level 3, Lesson 2
    Resolved
    What are we suppose to do here?1) an interface can't implement a method so what are we suppose to do?
    • 07.03.2020
    • 830views
    • 1comment
    0
  • FantasticFlo
    Level 20
    Munich
    Question about the task We don't need repeats
    Java Syntax, Level 8, Lesson 8
    Under discussion
    I doesn't workCan somebody give me a hint why it doesn't work?
    • 06.03.2020
    • 1097views
    • 3comments
    0
  • Amal C.O.
    Level 7
    Mavelikara
    Question about the task Crossing the road blindly
    Java Syntax, Level 4, Lesson 4
    Under discussion
    crossing the road blind help neededplease help. I don't know what to do
    • 23.02.2020
    • 1097views
    • 1comment
    0
  • SirSkii
    Level 12
    Chicago
    Question about the task Arithmetic mean
    Java Syntax, Level 5, Lesson 5
    Under discussion
    Please help. I have the right answer though for all tests.Arithmetic mean problem: I have the right answer for all tests, but the errors says "Be sure that the displayed result is a real number (don't round to the nearest whole number). Be sure that the displayed result is a real number." i didn't do anything special either. I just used what we've been le
    • 07.03.2020
    • 1211views
    • 3comments
    0
  • CJ
    Level 5
    El Cajon
    Question about the task Sorting three numbers
    Java Syntax, Level 4, Lesson 6
    Under discussion
    Not sure why test isnt passing the 4th condition??Anyone see a mistake in my code? It works as it should but not sure whats up
    • 01.03.2020
    • 794views
    • 1comment
    0
  • Jason
    Level 26
    Rancho Cucamonga
    Question about the task OOP: Books
    Java Core, Level 5, Lesson 2
    Resolved
    I don't understand what a couple requirements are asking me to do. I got most of it... I think?I just don't understand at all what these lines are asking from me; 3. The MarkTwainBook class must correctly implement a constructor with one String parameter (book title). and 8. The AgathaChristieBook class must correctly implement a constructor with one String parameter (book title). Also, fro
    • 29.08.2019
    • 1381views
    • 3comments
    1
  • Tian Pro
    Level 23
    Cape Town
    Question about the task Mirror image
    Java Core, Level 9, Lesson 11
    Resolved
    Woah ok I'm lost.I'm trying to figure out a basic thing (I know, "haha") about putting this char Array in reverse order...probably forgetting something. Really confused! Any help would be awesome :'D
    • 20.02.2020
    • 1110views
    • 6comments
    0
  • Michael Jung
    Level 3
    Arlington
    Question about the task Family relations
    Java Syntax, Level 2, Lesson 2
    Under discussion
    What's the difference? So I see that when it's woman.husband = man; and man.wife = woman;, it passed through. If it's the other way around (man = woman.husband or woman = man.wife), it does not pass condition 3 and 4. Can someone please explain to me? What's the difference between man = woman.husband and woman.husban
    • 06.03.2020
    • 886views
    • 1comment
    0
  • Matjes
    Level 12
    Prague
    Question about the task Make a family
    Java Syntax, Level 8, Lesson 11
    Resolved
    Stuck with printing out Could please someone give me a hand? I am stuck with this task and cannot see the error in my code. The for each loop correctly should in line 47-48 should be (just for some reason the system did not update the modification in my code): for (Human humansToPrintOut : everybody) { Syste
    • 06.03.2020
    • 1250views
    • 2comments
    0
  • Kent Hervey
    Level 19
    Question about the task String array in reverse order
    Java Syntax, Level 7, Lesson 4
    Resolved
    Failing...condition 1, passing othersFirst condition is: The program must create an array of 10 strings. I pass the other conditions that include reading and displaying and reverse. I wonder if my problem is I created and initialized in one statement like this: String[] list = {"a", "b", "c", "d", "e", "f", "g", "h", "i", "j"};
    • 30.10.2019
    • 1618views
    • 4comments
    0
  • Michael Brimage
    Level 19
    Washington D.C.
    Question about the task One large array and two small ones
    Java Syntax, Level 7, Lesson 4
    Under discussion
    completely stumpedI have no Idea what I am doing wrong here. I think its line 32: I've tried a few different ways to no avail. Today is not my day with CodeGym :-(
    • 03.03.2020
    • 860views
    • 3comments
    0
  • Sanjay Chauhan
    Level 28
    Delhi
    Question about the task Reading a file
    Java Core, Level 3, Lesson 11
    Archived
    Program display too many lines.Dear CodeGym Members, like other users, I am also getting "Program display too many lines". Will it possible for you to check what am I doing wrong here? I tested with a file and it's working fine.
    • 24.02.2020
    • 1164views
    • 8comments
    1
  • Art
    Level 13
    Chisinau
    Question about the task Longest sequence
    Java Syntax, Level 8, Lesson 6
    Under discussion
    Where's the issue?I know that my code isn't the most eye pleasing code you could write, but it works and the output is 100% right. Where's the issue?
    • 05.03.2020
    • 865views
    • 2comments
    0
  • Raj Mishra
    Level 15
    India
    Question about the task Checking the order
    Java Syntax, Level 7, Lesson 9
    Resolved
    Please help me in understanding the questionI am not understanding the logic of the question, what to code ? Could you pls help me understanding the question ?
    • 31.01.2020
    • 984views
    • 2comments
    0
  • Mikayla Pace
    Level 27
    Salt Lake City
    Question about the task Tracking changes
    Java Core, Level 9, Lesson 11
    Under discussion
    I'm at a loss, need another pair of eyesI've been over and over this, I'm sure there is something simple I am missing, but I can't figure out what it is, it seems like it should work... also why does the validator say I haven't closed my FileReader Streams?
    • 09.01.2020
    • 1183views
    • 2comments
    0
  • Luke
    Level 5
    Seattle
    Question about the task Plan to conquer the world
    Java Syntax, Level 3, Lesson 8
    Under discussion
    Why do these objects work?Is "import.java.io.*" the reason that the objects "InputStream, Reader, and BufferedReader" have actual functions? Like are the methods that determine the abilities of those objects defined in some class called java.io?
    • 06.03.2020
    • 1362views
    • 1comment
    0
  • Antonia
    Level 10
    Question about the task One large array and two small ones
    Java Syntax, Level 7, Lesson 4
    Under discussion
    !!!help please
    • 24.07.2019
    • 1189views
    • 2comments
    0
  • hidden #10450313
    Level 8
    Question about the task One large array and two small ones
    Java Syntax, Level 7, Lesson 4
    Under discussion
    What is wrong here?I can't tell what is going wrong, output is correct and I see no problem with what I have done here. No errors when I run it, so I'm just confused at this point.
    • 02.07.2019
    • 1130views
    • 2comments
    0
  • Iasu
    Level 18
    Question about the task Adding
    Java Syntax, Level 4, Lesson 16
    Under discussion
    I can't go anyway with task! How many inputs does the task take. I'm very confused..I can't go anyway with task! How many inputs does the task take. I'm very confused..
    • 09.12.2018
    • 1910views
    • 2comments
    0
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CodeGym CodeGym is an online course for learning Java programming from scratch. This course is a perfect way to master Java for beginners. It contains 1200+ tasks with instant verification and an essential scope of Java fundamentals theory. To help you succeed in education, we’ve implemented a set of motivational features: quizzes, coding projects, content about efficient learning, and a Java developer’s career.
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