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  • All questions
  • Diep Le
    Level 4
    Paihia
    Question about the task Maximum of four numbers
    Java Syntax, Level 4, Lesson 6
    Under discussion
    What wrong with my codecould someone please point out what wrong with my code here? this is to find the maximum of 4 Use the keyboard to enter four numbers, and display the maximum of them. If the maximum occurs more than once, just display it once. Requirements: The program should read the numbers from the keyboard. Th
    • 9/5/20
    • 566views
    • 2comments
    0
  • Valuev Nutt
    Level 4
    Chiba
    Question about the task Our first converter!
    Java Syntax, Level 2, Lesson 2
    Under discussion
    Why 5.0 instead of 5?I managed to do it but I am just wondering why it had to be 5.0 for it to work. I did very poorly in maths when I was in school so a simple explanation would be very much appreciated. Thanks!
    • 9/4/20
    • 688views
    • 3comments
    0
  • Adam
    Level 1
    Florida
    Question about the task Plan to conquer the world
    Java Syntax, Level 3, Lesson 8
    Resolved
    Java.util.Scanner;I guess we can't import Scanner? The below code works just fine in JGrasp and IntelliJ. Got it, I didnt know the input was at them bottom where it says input... I assumed the input was already part of the check. import java.util.Scanner; public class test { public static void main(String[] ar
    • 9/4/20
    • 820views
    • 2comments
    0
  • Dave Andrea
    Level 41
    Question about the task Why doesn't the set contain an element?
    Java Collections, Level 6, Lesson 10
    Resolved
    No idea what the validator is looking for here.So I've tried the following: 1) I fixed isLastDateInDates() so that it compares the getTime() values rather than the object hashcodes. It now returns true. I left updateLastDate as is, as it should change the variable last date to the updated one. Validator won't accept the last 2 conditions. 2) I
    • 8/30/20
    • 601views
    • 1comment
    0
  • Hari
    Level 8
    Worcester
    Question about the task The end
    Java Syntax, Level 7, Lesson 12
    Under discussion
    what is wrong? please help!
    • 9/4/20
    • 582views
    • 1comment
    0
  • AnnemiekFF
    Level 41
    Breda
    Question about the task Restaurant (part 19)
    Java Multithreading, Level 9, Lesson 15
    Resolved
    Output is correct with what is expected, but nothing verifies except the matching constructor.Can anybody tell me where the problem lies? I think it must be somewhere other than the main method, but I don't know where or how to find it?
    • 4/7/20
    • 1520views
    • 3comments
    0
  • Andrei
    Level 41
    Question about the task Sum of the digits of a three-digit number
    Java Syntax, Level 3, Lesson 12
    Under discussion
    Why can't i declare multiple int variables on the same line, inside the function?Hello, I have the following code but when I debug the code I get the following error: "java: variable sum might not have been initialized" Why I am not allowed to declare int variables sum and m in the same row using the formula " int sum, m = 0". The only way it is accepted is by declaring them in
    • 8/26/20
    • 612views
    • 8comments
    0
  • Lawson
    Level 29
    Lagos
    Question about the task Yet another adapter
    Java Core, Level 9, Lesson 3
    Under discussion
    Helppls I need help here
    • 9/4/20
    • 440views
    • 6comments
    0
  • Lawson
    Level 29
    Lagos
    Question about the task TableAdapter
    Java Core, Level 9, Lesson 3
    Resolved
    HelpSomeone pls guide me on the last option
    • 9/4/20
    • 592views
    • 2comments
    0
  • Akintilebo Olamilekan
    Level 8
    Osun State
    Question about the task Positive number
    Java Syntax, Level 4, Lesson 7
    Resolved
    Help. Note that 0 is not a positive or negative numberpackage com.codegym.task.task04.task0428; /* Positive number */ import java.io.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { //write your code here Scanner sc = new Scanner(System.in); int a = sc.nextIn
    • 1/31/19
    • 2309views
    • 6comments
    0
  • mstellaluna
    Level 5
    Question about the task Positive number
    Java Syntax, Level 4, Lesson 7
    Under discussion
    Code Error I pass all the requirements except 1 of them. the message is a bit obscure for me so im not sure what is wants. if I go into eclipse, replace buffered reader with variables with values, it works fine... Here is my code BufferedReader reader = new BufferedReader (new InputStreamReader(System.i
    • 9/4/18
    • 1782views
    • 7comments
    0
  • Pablo Saquilmer
    Level 32
    Guatemala City
    Question about the task Rarest bytes
    Java Core, Level 8, Lesson 3
    Under discussion
    What I m getting wrong?Is this what i should display?
    • 9/4/20
    • 480views
    • 2comments
    0
  • David
    Level 9
    Atlanta
    Question about the task Shuffled just in time
    Java Syntax, Level 7, Lesson 12
    Under discussion
    Seems to work, but...Not sure why this won't clear, even if it's a bit inelegant...
    • 9/3/20
    • 481views
    • 3comments
    0
  • Tyler Evans
    Level 6
    Wallasey
    Question about the task Man and woman
    Java Syntax, Level 5, Lesson 12
    Under discussion
    Help please failing saying make sure you make 2 Man objectsFrom what i can see i have made two man objects and two woman objects. it is failing on the condition of that "in the main method you need to created two objectss of each type". I have run the program and the output appears to be correct also. Any help is appreciated many thanks Tyler
    • 9/2/20
    • 517views
    • 4comments
    0
  • yi
    Level 20
    Toronto
    Question about the task Wine tasting
    Java Core, Level 4, Lesson 8
    Archived
    Hi Can someone help me with this ?Can you tell me how to return the 3 methods in Solution class ? thx.
    • 12/21/19
    • 1284views
    • 6comments
    0
  • Premachandran
    Level 35
    Ernakulam
    Question about the task User, loser, coder and programmer
    Java Core, Level 4, Lesson 8
    Under discussion
    pl help. Why my code is not passing verificationpl help. my code is not passing cerification
    • 12/3/18
    • 1916views
    • 5comments
    0
  • Joel Pearce
    Level 22
    Birmingham, UK
    Question about the task Rounding numbers
    Java Core, Level 8, Lesson 11
    Under discussion
    How am I so spectacularly wrong?Looking at other people's code I can see that I'm way out of the ballpark on this one. Did I miss something in the lessons?
    • 9/3/20
    • 477views
    • 1comment
    0
  • Malte Böhm
    Level 12
    Question about the task Shortest or longest
    Java Syntax, Level 7, Lesson 6
    Under discussion
    Which lection did i miss?Hey guys, I really have no clue how to solve this the right way. My issue is that I have to clue how to get the length of an element. Was this somewhere in a lection before and I missed it? What did you do to solve it? Thank you
    • 9/2/20
    • 541views
    • 2comments
    0
  • Andres
    Level 4
    Reedley
    Question about the task Deep and pure love
    Java Syntax, Level 3, Lesson 8
    Under discussion
    what am i doing wronghelp please
    • 8/13/20
    • 525views
    • 4comments
    0
  • Lawson
    Level 29
    Lagos
    Question about the task Extending AmigoOutputStream
    Java Core, Level 8, Lesson 8
    Resolved
    HelpPls what's my error... I need help
    • 9/2/20
    • 513views
    • 1comment
    0
  • towelie8
    Level 1
    Darmstadt
    Question about the task Min and max in arrays
    Java Syntax, Level 7, Lesson 12
    Under discussion
    Right answer, but 3 requirement fails :/Right answer, but 3 requirement fails :/
    • 8/26/20
    • 613views
    • 3comments
    0
  • Bryce Lindley
    Level 9
    Olympia
    Question about the task Rule of the triangle
    Java Syntax, Level 4, Lesson 4
    Resolved
    Doesn't this work?Not sure why it's giving me problems. :>(
    • 5/19/19
    • 1272views
    • 3comments
    0
  • Robert P
    Level 20
    Nashville
    Question about the task GCD
    Java Core, Level 4, Lesson 8
    Resolved
    Help with condition 2I've tried many things to pass this condition. I've added try/catch blocks. I've used an if block to throw an Illegal Argument Exception for negative numbers. I'm currently using an if block to convert negative int into positive int. I've changed the main signature to what another question post
    • 11/24/18
    • 2744views
    • 4comments
    0
  • Lawson
    Level 29
    Lagos
    Question about the task Table
    Java Core, Level 8, Lesson 8
    Under discussion
    Pls helphow do u display the list ... I'm short of ideas now pls help with the code probably
    • 9/2/20
    • 561views
    • 1comment
    0
  • Lawson
    Level 29
    Lagos
    Question about the task AmigoOutputStream
    Java Core, Level 8, Lesson 8
    Resolved
    HelpIt tells me to throw exception... I don't know what to do here
    • 9/2/20
    • 699views
    • 0comments
    0
  • Lawson
    Level 29
    Lagos
    Question about the task Sorting bytes
    Java Core, Level 8, Lesson 3
    Under discussion
    Pls help meI don't understand why it isn't displaying
    • 9/1/20
    • 474views
    • 2comments
    0
  • vaibhav
    Level 4
    Morristown
    Question about the task Decent pay
    Java Syntax, Level 4, Lesson 16
    Under discussion
    Level 4: Lesson 16 public class Solution { public static void main(String[] args) { //write your code here int i=0; while(i<=99) { System.out.println("one hundred times:\"I will never work for peanuts.Amigo\""); //System.out.println("\"I will never work for peanu
    • 9/2/20
    • 596views
    • 1comment
    0
  • Seferi
    Level 22
    Question about the task Sorting even numbers from a file
    Java Core, Level 3, Lesson 11
    Resolved
    Somehow its reading the 2nd, 4th, 6th etc lines...Help is appreciated...
    • 8/20/20
    • 779views
    • 8comments
    0
  • Dave Andrea
    Level 41
    Question about the task Toward an RMI server
    Java Collections, Level 2, Lesson 10
    Under discussion
    Is this program supposed to throw an error?I passed the validation but my program threw a NoSuchObjectException. This is because we are "pretending" that we made a server and client, right?
    • 8/30/20
    • 592views
    • 1comment
    0
  • Baurzhan Konurbayev
    Level 40
    Question about the task Word search
    Java Core, Level 10, Lesson 10
    Resolved
    need helpHi, Could you please tell me what tests are failing? Samples from task work fine. Thanks
    • 8/31/20
    • 617views
    • 4comments
    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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