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  • All questions
  • John
    Level 27
    Washington DC
    Question about the task Spaces
    Java Core, Level 8, Lesson 11
    Resolved
    I don't even understand what is being asked...I don't even understand what is being asked...
    • 14.11.2019
    • 1097views
    • 1comment
    0
  • Clarendon lee
    Level 8
    Baltimore
    Question about the task One large array and two small ones
    Java Syntax, Level 7, Lesson 4
    Under discussion
    java.lang.ArrayIndexOutOfBoundsException: 9What's my code wrong? java.lang.ArrayIndexOutOfBoundsException: 9 Thanks a lot !!!
    • 12.11.2019
    • 1462views
    • 2comments
    0
  • Deborah Wenrich
    Level 7
    Pembroke Pines
    Question about the task Minimum of four numbers
    Java Syntax, Level 2, Lesson 8
    Under discussion
    Can someone check my code? I don't see what I'm missing.
    • 14.11.2019
    • 816views
    • 1comment
    0
  • Whitney
    Level 14
    Onalaska
    Question about the task Set of cats
    Java Syntax, Level 8, Lesson 11
    Under discussion
    Removing an object in a Set without an iterator.Hello! Is it possible to remove an object from a Set by a variable within that object? The focus of my question here is cats.remove(Cat.name("Phantom")); I'm receiving a compiling error that Cat symbol cannot be found, but just above this line in the code we created a HashSet with the Cat class
    • 14.11.2019
    • 1419views
    • 1comment
    0
  • Clarendon lee
    Level 8
    Baltimore
    Question about the task Ascending numbers
    Java Syntax, Level 6, Lesson 11
    Under discussion
    What's my code wrong?error: cannot find symbol Arrays.sort(list); 21th, line. What's wrong is it? Thanks a lot. ,!
    • 10.11.2019
    • 2193views
    • 3comments
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Finding data inside a file
    Java Core, Level 8, Lesson 11
    Under discussion
    Help me pls with thisI need help
    • 29.06.2019
    • 762views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Picking out numbers
    Java Core, Level 9, Lesson 5
    Under discussion
    Help me pls with thisPls need help
    • 29.06.2019
    • 1175views
    • 1comment
    0
  • Satya Vath
    Level 31
    Vijayawada
    Question about the task Reading and writing to a file: CodeGym
    Java Core, Level 10, Lesson 2
    Under discussion
    Please HelpHelp
    • 22.04.2019
    • 1198views
    • 1comment
    0
  • Satya Vath
    Level 31
    Vijayawada
    Question about the task Problem solving
    Java Core, Level 9, Lesson 8
    Under discussion
    Please HelpWhere is The Error
    • 19.04.2019
    • 1108views
    • 1comment
    0
  • Julian “tar” O.falcon
    Level 8
    Parkersburg
    Under discussion
    Can you JUnit with codegym?I want to build the good habit of Junit testing while i develop.
    • 06.05.2019
    • 1079views
    • 1comment
    1
  • Denis
    Level 22
    Kharkiv
    Question about the task Word search
    Java Core, Level 10, Lesson 10
    Under discussion
    What i mush change?Help pls
    • 30.06.2019
    • 1121views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Rectangle algorithms
    Java Core, Level 10, Lesson 10
    Under discussion
    Need helpWhat is wrong
    • 30.06.2019
    • 1206views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Externalizable Person
    Java Core, Level 10, Lesson 7
    Under discussion
    Need help plsOne condition
    • 30.06.2019
    • 1056views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Reading and writing to a file: CodeGym
    Java Core, Level 10, Lesson 2
    Under discussion
    Need help plsI cant understand
    • 30.06.2019
    • 1004views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task The richest
    Java Core, Level 9, Lesson 11
    Under discussion
    Help me plsNeed help
    • 29.06.2019
    • 1001views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Problem solving
    Java Core, Level 9, Lesson 8
    Under discussion
    Need helpPls
    • 29.06.2019
    • 1214views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Symbol frequency
    Java Core, Level 8, Lesson 11
    Under discussion
    Help me pls I need a help
    • 29.06.2019
    • 1007views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Splitting a file
    Java Core, Level 8, Lesson 5
    Under discussion
    Help me plsNeed help
    • 28.06.2019
    • 1017views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Factorial
    Java Core, Level 5, Lesson 12
    Under discussion
    help me plswhar is wrong
    • 26.06.2019
    • 1033views
    • 1comment
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Computer
    Java Core, Level 4, Lesson 8
    Under discussion
    Help me pls with the solutionHelp pls with this
    • 25.06.2019
    • 966views
    • 1comment
    0
  • Ильсур Чубаркин
    Level 19
    Kazan
    Question about the task Task about algorithms
    Java Syntax, Level 9, Lesson 11
    Under discussion
    why it does not workSorry for my English. I am from Russia. I don not understand why my algoritm does not work.
    • 25.06.2019
    • 1074views
    • 1comment
    0
  • Biplob
    Level 22
    কুমিল্লা
    Question about the task Factorial
    Java Core, Level 5, Lesson 12
    Under discussion
    Whats the error mean?Also need some specific explanation
    • 22.06.2019
    • 1020views
    • 1comment
    0
  • Sergei Polakov
    Level 11
    Donets'k
    Question about the task Task about algorithms
    Java Syntax, Level 9, Lesson 11
    Under discussion
    its compiled all ok but not verifiedinput Cherry 10000 Bob 36 Apple -220 0 Watermelon output Apple 10000 Bob 36 Cherry 0 -220 Watermelon
    • 21.06.2019
    • 1214views
    • 1comment
    0
  • Chien Ta Duy
    Level 20
    Hanoi
    Question about the task Counting words
    Java Core, Level 9, Lesson 5
    Under discussion
    Missing last requirementAs I checked in IntelliJ Idea, my code is working fine. However, Codegym is marking fail last requirement. Please help!
    • 26.07.2019
    • 1073views
    • 1comment
    0
  • VIVEK BARUAH
    Level 20
    Eluru
    Question about the task Counting words
    Java Core, Level 9, Lesson 5
    Under discussion
    Please help. IntelliJ is giving correct count. Still errorbuilding tools=2000 world building tools=2000 world building tools=2000 world building tools=5000 world building tools=5000 building tools=2000 building tools=1000 building tools=5000 building tools=6000 shelter equipment=5000 construction equipment=5000 plants=1000 steel=8000 books=1000 water=5000
    • 19.06.2019
    • 1384views
    • 1comment
    0
  • hidden #10444738
    Level 16
    Question about the task In decreasing order
    Java Syntax, Level 7, Lesson 12
    Under discussion
    This works but not!I dont understand why this gives an errror, it seems to work .
    • 18.06.2019
    • 1170views
    • 2comments
    0
  • Kron1K
    Level 26
    AUS
    Question about the task Building a file
    Java Core, Level 8, Lesson 11
    Under discussion
    Ive had multiple people look at this code and say it works fineWhat is the problem here?
    • 18.06.2019
    • 836views
    • 1comment
    0
  • Klin Sándor
    Level 10
    Toeroekbalint
    Question about the task Cat code won't compile
    Java Syntax, Level 7, Lesson 12
    Under discussion
    Why not satisfied my lovely PO?The program gives back the wanted results, all the time, and I typed exactly the same input as in it in the tests, and I got back the correct results. So?
    • 16.06.2019
    • 1122views
    • 1comment
    0
  • Lyudmil
    Level 1
    Sofia
    Under discussion
    There are 2 identical versions of the courseSince there are some slight differences in content, which version is better to follow - the one in the Home link, or the one in the Course page?
    • 16.06.2019
    • 844views
    • 1comment
    0
  • Pioniio
    Level 22
    Schaffhausen
    Question about the task Splitting a file
    Java Core, Level 8, Lesson 5
    Under discussion
    why is it not working with odd number of byteswhen the count of bytes is for example 7, my code writes 4 bytes to the file2 (from index 0 to 3) and 3 bytes to file3 (from index 4 to 6), why i receive verification error? what i'm missing here, pls help
    • 08.06.2019
    • 1026views
    • 1comment
    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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