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  • All questions
  • SammyGammy
    Level 4
    Chico
    Question about the task Closest to 10
    Java Syntax, Level 4, Lesson 4
    Under discussion
    I get the correct numbers, but it still doesnt work?I am not sure what I am missing.
    • 7/7/20
    • 549views
    • 1comment
    0
  • Yip Mun Allen
    Level 8
    London
    Question about the task Cat and statics
    Java Syntax, Level 6, Lesson 11
    Under discussion
    Infinite Loop?Why does this create an infinite loop if the condition is stated?
    • 1/28/20
    • 1577views
    • 7comments
    0
  • Abhilash Ravichandran
    Level 10
    Kigali
    Question about the task Who called me?
    Java Syntax, Level 9, Lesson 2
    Resolved
    Return the line number of the code from which it was called?What am I asked to do?
    • 11/3/18
    • 2380views
    • 4comments
    0
  • Edddieg
    Level 15
    Providence
    Question about the task Animal set
    Java Syntax, Level 8, Lesson 11
    Under discussion
    please explaincan someone please explain this to me ... I solved it but can't understand it... thank you
    • 7/4/20
    • 536views
    • 0comments
    0
  • SammyGammy
    Level 4
    Chico
    Question about the task Predictions
    Java Syntax, Level 3, Lesson 8
    Under discussion
    What do I do?I do not know why this is not working. I feel like I have the code right, but it shows up with an error everytime. error: cannot find symbol symbol: method readline() location: variable reader of type java.io.BufferedReader. file com/codegym/task/task03/task0319/Solution.java, line 14, position 30
    • 7/6/20
    • 652views
    • 2comments
    0
  • BlueJavaBanana
    Level 37
    Question about the task Build a WHERE query
    Java Multithreading, Level 2, Lesson 9
    Resolved
    Can someone please post the specific instructions for this task?The task instructions are very ambiguous. Could someone please tell me EXACTLY what the task requires? The Map params - does it contain two parameters per ? Or are the parameters for the query ONLY in the value not the key ? Thanks in advance.
    • 7/6/20
    • 840views
    • 4comments
    0
  • Denis
    Level 22
    Kharkiv
    Question about the task Returning a stack trace
    Java Syntax, Level 9, Lesson 2
    Under discussion
    give me the solution. plsonly solutoin pls
    • 6/20/19
    • 2015views
    • 4comments
    1
  • Angus McDonald
    Level 5
    Sydney
    Question about the task Hippodrome (part 6)
    Java Multithreading, Level 1, Lesson 16
    Resolved
    Something not right..Hi everyone.. I've tried a number of variations on the below but can't seem to get it working. For example, I've tried using all kinds of constructed 'game' variables.. to no effect. I've created an empty constructor with no parameters and used in Main Method.. to no effect. I've tried a couple dif
    • 7/6/20
    • 600views
    • 2comments
    0
  • Sindhura
    Level 15
    Delhi
    Question about the task We're all friends here, even the exceptions
    Java Syntax, Level 9, Lesson 8
    Under discussion
    what is wrong with his-declared two checked and two unchecked but still not verifyingpackage com.codegym.task.task09.task0918; /* We're all friends here, even the exceptions */ import java.io.*; public class Solution { public static void main(String[] args) { } static class MyException extends Exception { public void test(){ try{
    • 10/10/18
    • 2768views
    • 6comments
    0
  • Henk
    Level 19
    Pretoria
    Question about the task Cats
    Java Core, Level 4, Lesson 4
    Resolved
    why does THIS work, but THIS does not ?Did not work: ----------------- BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); while (true){ if (reader.readLine().equals(" ")){ break; } Cat cat = CatFactory.getCatByKey(reader.readLine());
    • 5/17/19
    • 1754views
    • 2comments
    1
  • Henk
    Level 19
    Pretoria
    Question about the task Overloading constructors
    Java Core, Level 5, Lesson 12
    Resolved
    Anyone sure what this task is actually requiring ?I tried various things, not getting any luck.
    • 5/22/19
    • 1793views
    • 6comments
    0
  • Brad Reed
    Level 19
    Hartford
    Question about the task Labels and numbers
    Java Syntax, Level 4, Lesson 7
    Resolved
    I must have a mistake/typo...cant find it though.Hey all. well it works for everything but the negative odd numbers. I've looked over the code a bunch and I don't see the issue. which means its probably staring me in the face. help! ps don't try this stuff whilst working midnight shift, you'll make errors you miss a lot and feel bad about it late
    • 6/21/20
    • 791views
    • 1comment
    0
  • Tian Pro
    Level 23
    Cape Town
    Question about the task Refactoring methods
    Java Multithreading, Level 1, Lesson 10
    Resolved
    Wow, this is harder than I thought. Please help! So I've reset this task so many times, trying different things, done research quite a bit, but I seem to have a mental block with this try-with-resources concept! Finally, I found this https://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html which helps but for some reason
    • 3/6/20
    • 1538views
    • 3comments
    1
  • Tata
    Level 16
    Hisar, Haryana
    Question about the task Logging stack traces
    Java Syntax, Level 9, Lesson 2
    Under discussion
    Could anyone tell me where i am wrong.pls..
    • 7/6/20
    • 502views
    • 1comment
    0
  • Seferi
    Level 22
    Question about the task Census
    Java Syntax, Level 8, Lesson 8
    Resolved
    why doesn't it work?Can someone help?
    • 7/4/20
    • 591views
    • 4comments
    0
  • Seferi
    Level 22
    Question about the task Kind Emma and the summer holidays
    Java Syntax, Level 8, Lesson 8
    Resolved
    It's working on the IDE but fails the test..Help is appreciated..
    • 7/5/20
    • 622views
    • 1comment
    0
  • Massimo Lorenzi
    Level 2
    milano
    Under discussion
    where i am wrongkindly there is someone who can tell me where i am wrong
    • 7/6/20
    • 477views
    • 1comment
    0
  • Varma7590
    Level 16
    Hyderabad
    Question about the task Catching checked exceptions
    Java Syntax, Level 9, Lesson 8
    Resolved
    Multiple Exceptions ???Please anyone give me the idea how can we catch multiple exceptions with a single catch block ???
    • 10/20/18
    • 2731views
    • 14comments
    0
  • Divakar Reddy
    Level 15
    Nandyal
    Question about the task Exceptions. Just exceptions.
    Java Syntax, Level 9, Lesson 8
    Under discussion
    can anyone help me whats wrongwhats wrong can anyone explain
    • 7/18/19
    • 1312views
    • 4comments
    0
  • Alessio
    Level 4
    Question about the task Multiplication table
    Java Syntax, Level 3, Lesson 6
    Resolved
    my loop doesn't work i get 121 printedwhat's wrong with the code... i really can't figure it out... please help.
    • 7/6/20
    • 695views
    • 2comments
    0
  • Ovo Leslie
    Level 26
    Lagos
    Question about the task StringHelper class
    Java Syntax, Level 6, Lesson 8
    Under discussion
    Tell me what's wrong hereThe condition for String and count is not verifying and but when I run it, it is runs correctly i.e the string s is printed count times.
    • 3/19/19
    • 1577views
    • 6comments
    0
  • Angel Li
    Level 18
    Fremont
    Question about the task Bridges
    Java Core, Level 4, Lesson 8
    Resolved
    Randomly gives null pointer exception???????????There's probably some obvious reason but I just can't see it. It gives a null pointer exception and won't verify. The 6th requirement where it says to display things doesn't pass.
    • 7/5/20
    • 638views
    • 2comments
    0
  • Anthony Mack
    Level 2
    Waukesha
    Question about the task Task about algorithms
    Java Syntax, Level 9, Lesson 11
    Under discussion
    What's causing the NullPointerExceptionI don't know what's causing the nullpointerexception.
    • 6/29/20
    • 518views
    • 2comments
    0
  • Chris Hilborne
    Level 26
    Sanlucar de Barrameda
    Question about the task Build a WHERE query
    Java Multithreading, Level 2, Lesson 9
    Under discussion
    Still can't get this to pass!I'm sure my returned string meets the requirements - is there a 'special' case I haven't thought of? public static String getQuery(Map params) { StringBuilder sb = new StringBuilder(); Formatter fm = new Formatter(sb); Iterator> iterator = map.entrySet().iterat
    • 6/12/20
    • 533views
    • 1comment
    0
  • fifi deng
    Level 22
    Paris
    Question about the task Number of letters
    Java Syntax, Level 10, Lesson 11
    Under discussion
    can not valider,but ouput is right, i thinkpackage com.codegym.task.task10.task1012; import java.io.BufferedReader; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.HashMap; /* Number of letters */ public class Solution { public static void main(String[] args) throws Exception { BufferedReader r
    • 7/2/20
    • 764views
    • 5comments
    0
  • Jordan
    Level 6
    Muncie
    Question about the task Maximum of four numbers
    Java Syntax, Level 4, Lesson 6
    Under discussion
    I have tried every variation of numbers and my code works but will not pass verification? Any thoughts?package com.codegym.task.task04.task0419; /* Maximum of four numbers */ import java.io.*; public class Solution { public static void main(String[] args) throws Exception { //write your code here BufferedReader read1 = new BufferedReader(new InputStreamReader(System.in));
    • 7/5/20
    • 720views
    • 4comments
    0
  • hidden #10473715
    Level 13
    Question about the task Five winners
    Java Syntax, Level 8, Lesson 11
    Under discussion
    Need your helpAll requirements except: The sort() method should sort the array of numbers from highest to lowest. are right Thank you for your help
    • 7/29/19
    • 1720views
    • 2comments
    0
  • Jaisingh
    Level 14
    Hyderabad
    Question about the task Task No. 7 about integer type conversions
    Java Syntax, Level 10, Lesson 4
    Resolved
    how to solve this ?
    • 10/4/18
    • 3691views
    • 10comments
    0
  • Michal
    Level 26
    Lodz
    Question about the task Static cats
    Java Syntax, Level 6, Lesson 11
    Under discussion
    When were the arrays intruduced to the course and explained?When were the arrays intruduced to the course and explained?
    • 2/28/20
    • 1255views
    • 2comments
    1
  • Riley Terwilliger
    Level 4
    Asheville
    Question about the task Come on, lucky seven!
    Java Syntax, Level 4, Lesson 4
    Under discussion
    Is there an easier way to do this?I was just wondering if there was an easier way to put this/ shorter way. Thank you a bunch.
    • 7/4/20
    • 808views
    • 3comments
    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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