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  • All questions
  • Eike Holtzhauer
    Level 22
    Tostedt
    Question about the task Big Ben
    Java Core, Level 6, Lesson 7
    Under discussion
    Requirements are not met - need a hintHi I have no clou what´s wrong here. The last three conditions are not met and the only hint from the site is that the requirements are not met. I assume we have to check that all entered times should be processed properly, but I miss more feedback to figure out what´s wrong. Whould be very nice if
    • 8/5/19
    • 1822views
    • 2comments
    0
  • AndreiJ
    Level 10
    Timisoara
    Question about the task Longest string
    Java Syntax, Level 7, Lesson 6
    Archived
    error on requirements 3 and 4hello. i cant get around of what i'm doing wrong. i ran the program just fine, it gives the longest string, it shows all the longest strings, yet the last 2 conditions come false. any help is appreciated.
    • 7/31/19
    • 1324views
    • 7comments
    0
  • Nitin raj
    Level 12
    Mumbai
    Question about the task In the blue depths of the stack trace…
    Java Syntax, Level 9, Lesson 2
    Under discussion
    please explain it so confusingPlease anyone explain how StackTrace is shown tweleve here. My brain is totally blank Please explain
    • 8/4/19
    • 1525views
    • 1comment
    0
  • karina abad
    Level 11
    Daly City
    Question about the task Remove and insert
    Java Syntax, Level 7, Lesson 6
    Under discussion
    Can't get the answer, don't get the question. package com.codegym.task.task07.task0711; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; /* Remove and insert */ public class Solution { public static void main(String[] args) throws Exception { //write your code here ArrayList
    • 8/3/19
    • 2052views
    • 2comments
    0
  • Evghenii
    Level 13
    Chisinau
    Question about the task Kind Emma and the summer holidays
    Java Syntax, Level 8, Lesson 8
    Resolved
    CAN SOME BODY HELP ME.I DON'T SEE THE PROBLEM, PLEASE HELP ME.
    • 6/20/19
    • 1823views
    • 4comments
    0
  • KARAN BHOITE
    Level 15
    Nagpur
    Question about the task Cat code won't compile
    Java Syntax, Level 7, Lesson 12
    Under discussion
    COMPILED BUT OUT PUT NOT COMING ,GETTING THIS ERRORjava.lang.NullPointerException at com.codegym.task.task07.task0726.Solution.main(Solution.java:21) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(De
    • 8/1/19
    • 1516views
    • 5comments
    1
  • Niket
    Level 8
    Kolkata
    Question about the task Jen or Jen?
    Java Syntax, Level 4, Lesson 6
    Resolved
    Please Help. Error in ".length()" method I am not able to understand why length of the string is not working. Please Help. Following is my code import java.io.*; public class Solution { public static void main(String[] args) throws Exception { BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    • 1/10/19
    • 2071views
    • 2comments
    3
  • Steve
    Level 9
    Denver
    Question about the task We don't need repeats
    Java Syntax, Level 8, Lesson 8
    Under discussion
    Not sure what I'm doing wrong here,, stuck!!Not passing the 4th task
    • 8/2/19
    • 1438views
    • 1comment
    1
  • Marcin
    Level 22
    Edinburgh
    Question about the task Rule of the triangle
    Java Syntax, Level 4, Lesson 4
    Under discussion
    what is wrong here ?not sure why last condition failed .... any help please?
    • 7/24/19
    • 1501views
    • 2comments
    0
  • TatiE
    Level 11
    Upland
    Question about the task Task about algorithms
    Java Syntax, Level 5, Lesson 12
    Archived
    Last requirement is not validatingI think the issue is that the code should not work at all if the number of digits is more than N but mine still works. Am I correct with this assumption? I was trying to fix it but was looking at it for too long now. Need a fresh look and a hint, please.
    • 7/15/19
    • 1579views
    • 5comments
    2
  • Keith Emery
    Level 17
    Saint Louis
    Question about the task Task about algorithms
    Java Syntax, Level 9, Lesson 11
    Resolved
    Output matches example but code failsWhen I submit my code all requirements pass except the following: "The displayed words should be sorted in ascending order (using the provided isGreaterThan method)." I have, in fact, used the IsGreaterThan method and my output is exactly as shown in the task details when I use the example input dat
    • 8/2/19
    • 1553views
    • 0comments
    0
  • ddi
    Level 18
    Dortmund
    Question about the task Fluffy no more
    Java Core, Level 2, Lesson 12
    Resolved
    it prints I'm cat but doesn't verify! help!it prints I'm cat but doesn't verify! help!
    • 8/3/19
    • 1934views
    • 1comment
    0
  • Augusto
    Level 13
    Callao
    Question about the task Census
    Java Syntax, Level 8, Lesson 8
    Under discussion
    What is wrongPlease, Could someone point out what the error is? I can't find it
    • 6/23/19
    • 1457views
    • 3comments
    0
  • Nitin raj
    Level 12
    Mumbai
    Question about the task Only for the rich
    Java Syntax, Level 8, Lesson 8
    Under discussion
    please help me outwhats wrong with my code
    • 7/28/19
    • 1311views
    • 4comments
    0
  • Jacek
    Level 13
    Warsaw
    Question about the task Checking the order
    Java Syntax, Level 7, Lesson 9
    Resolved
    I don't know why the code isn't workI don't know why the index isn't printed.
    • 2/1/19
    • 1654views
    • 4comments
    0
  • Mikayla Pace
    Level 27
    Salt Lake City
    Question about the task Writing to a file from the console
    Java Core, Level 3, Lesson 11
    Resolved
    Condition 4&5 Don't validateThe output is correct, it writes content to the file, every String is on a new line, why doesn't the program validate.
    • 8/2/19
    • 1492views
    • 2comments
    0
  • Ian Rebmann
    Level 5
    San Diego
    Question about the task Somehow average
    Java Syntax, Level 4, Lesson 16
    Under discussion
    will pass on intelliJ wont on here My Program works on IntelliJ Any ideas on why it wont pass the server test? I know I can construct it differently but this should work. I have ran into this problem before.
    • 8/3/19
    • 1274views
    • 2comments
    0
  • Antonia
    Level 10
    Question about the task Family census
    Java Syntax, Level 7, Lesson 12
    Under discussion
    help ?
    • 8/2/19
    • 1564views
    • 2comments
    0
  • smaranika sahu
    Level 5
    Pune
    Question about the task I'm 15 again!
    Java Syntax, Level 1, Lesson 4
    Resolved
    Why my code is wrong?public class Solution { public static void main(String[] args) { String name = "Amigo"; int age = 15; //int money = 500; //int weight = 70; String s1 ="I'"; String s3="m "; String s2=" again!"; System.out.println(s1+s3+age+s2);
    • 5/9/19
    • 1702views
    • 3comments
    0
  • Jay
    Level 17
    Washington
    Question about the task Task about algorithms
    Java Syntax, Level 9, Lesson 11
    Under discussion
    Won't compile I'm constantly getting a NullPointer Exception error. I can't get it to compile to see what I need to change. Please assist. Thanks.
    • 8/2/19
    • 1139views
    • 3comments
    0
  • Dawid
    Level 28
    Question about the task Max, Bella, and Jack
    Java Syntax, Level 2, Lesson 3
    Under discussion
    Meaning of activities performed in the task.Well, I understand that dog1, dog2 and so on are variables of type Dog that is created by Class Dog. I understand that we creating two new objects too. But now I dont quite get it what these objects really are. Since "Dog" appears twice in this context I conclude that it is not object's name but obj
    • 8/2/19
    • 1451views
    • 1comment
    0
  • dibidebe
    Level 7
    Question about the task One large array and two small ones
    Java Syntax, Level 7, Lesson 4
    Under discussion
    ??What's missing?
    • 7/30/19
    • 1738views
    • 4comments
    0
  • Milos
    Level 16
    Podgorica
    Question about the task Arithmetic mean
    Java Syntax, Level 5, Lesson 5
    Resolved
    The second solution doesn't work.Why ?Can I get an explanation to understand this better: I can see that this is working : BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); int sum = 0; int counter = 0; double mean; for (; true; counter++) { String input = reader
    • 7/27/19
    • 1317views
    • 1comment
    0
  • deemneem
    Level 11
    Mumbai
    Question about the task Streets and houses
    Java Syntax, Level 7, Lesson 4
    Archived
    run well but does not verify package com.codegym.task.task07.task0706; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; /* Streets and houses */ public class Solution { public static void main(String[] args) throws Exception { int[] house = new int[15]; Buffer
    • 7/29/19
    • 1037views
    • 1comment
    0
  • Michał Kwaśny
    Level 22
    Krakow
    Question about the task Vowels and consonants
    Java Syntax, Level 9, Lesson 11
    Under discussion
    Last Requirement not satisfiedAny ideas what could be the reason of this bug? I have added the spaces at the end of Strings.
    • 7/10/19
    • 1238views
    • 4comments
    0
  • Ondrej
    Level 8
    Koeln
    Question about the task Console-based piggy bank
    Java Syntax, Level 5, Lesson 12
    Resolved
    What is wrong?Hello guys, what is wrong with this code? So far, I have figured out that it takes the first input number and every second thereafter.
    • 7/30/19
    • 1415views
    • 2comments
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task "Fix the code", part 1
    Java Core, Level 2, Lesson 6
    Under discussion
    Give me your help pls!help me pls with solution
    • 6/22/19
    • 1150views
    • 1comment
    0
  • Nitin raj
    Level 12
    Mumbai
    Question about the task We don't need repeats
    Java Syntax, Level 8, Lesson 8
    Under discussion
    can any one please explainI think my code is corect but why task condition is not met
    • 7/28/19
    • 1186views
    • 1comment
    0
  • Gannoju Ikshwak
    Level 2
    Hyderabad
    Question about the task The required number
    Java Syntax, Level 2, Lesson 5
    Under discussion
    what to do what should i comment out to get 19
    • 6/23/19
    • 1403views
    • 3comments
    0
  • Antonia
    Level 10
    Question about the task More Sam-I-Am
    Java Syntax, Level 7, Lesson 9
    Under discussion
    pleasehelp
    • 7/29/19
    • 1391views
    • 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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