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  • All questions
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Threads and bytes
    Java Core, Level 8, Lesson 11
    Under discussion
    Can you tell me where i do a mistake? public class Solution { public static Map resultMap = new HashMap(); public static void main(String[] args) throws IOException { BufferedReader reader = new BufferedReader(new InputStreamReader(System.in)); String filename =""; while(reader.ready()){ if(
    • 3/20/19
    • 2233views
    • 8comments
    0
  • Lex Medeiros
    Level 18
    San Jose
    Question about the task 18+
    Java Syntax, Level 4, Lesson 6
    Resolved
    Could you point out what is wrong with my code?Could someone tell me what I am doing wrong? Below is the code and here is the error I get: /* Use the keyboard to enter the name and age. If the age is less than 18, display "Grow up a little more". */ package com.codegym.task.task04.task0422; /* 18+ */ import java.io.*; public class Solu
    • 3/21/19
    • 1590views
    • 5comments
    0
  • vikr@nt
    Level 9
    Cincinatti
    Question about the task Remove and insert
    Java Syntax, Level 7, Lesson 6
    Resolved
    What is wrong with my code?I'm basically getting two errors and I've seen the inputs from previous help questions. I'm doing pretty much same. Anybody can you please guide me 1. Remove the last string and insert it at the beginning. Rinse and repeat 13 times. I'm doing it here : for (int i = 0; i<13; i++){ St
    • 2/9/19
    • 2047views
    • 6comments
    1
  • Anirban Mitra
    Level 2
    Kolkata
    Question about the task Don't feel like it? Do it anyway.
    Java Syntax, Level 1, Lesson 8
    Resolved
    what's wrong herestring s ="If you feel like it,do the task.If you don't feel like it.do it anyway"; System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.out.println(s); System.ou
    • 3/21/19
    • 1812views
    • 5comments
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Synchronized notes: part 2
    Java Core, Level 7, Lesson 4
    Under discussion
    I have general question not about this task. If we want synchronized something in some method can we always use word synchronized after access modifiers in method instead of synchronized block? I am not sure but i suppose it is much more convenient.
    • 3/1/19
    • 1420views
    • 1comment
    0
  • Hashirama
    Level 26
    Port-Harcourt
    Question about the task Your own FileWriter
    Java Core, Level 9, Lesson 11
    Archived
    Hi guysPlease what am I doing wrong? The mentor says: 1. Be sure that the FileConsoleWriter class's write(char[] cbuf, int off, int len) throws IOException method also writes the data to the console. 2. Be sure that the FileConsoleWriter class's write(String str, int off, int len) throws IOException method
    • 3/12/19
    • 2139views
    • 1comment
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task CRUD
    Java Core, Level 7, Lesson 10
    Under discussion
    How properly solve last and 3rd requirement ?need hint
    • 3/12/19
    • 1879views
    • 3comments
    0
  • Julián Orellana
    Level 20
    Guayaquil
    Question about the task Reading and writing to a file: CodeGym
    Java Core, Level 10, Lesson 2
    Under discussion
    help me , i have this error : Check why an exception occurs in the save/load methods.package com.codegym.task.task20.task2002; import java.io.*; import java.util.ArrayList; import java.util.List; import java.util.Date; import java.util.*; import java.text.*; import java.lang.IllegalArgumentException; /* Reading and writing to a file: CodeGym */ public class Solution { publ
    • 3/13/19
    • 1771views
    • 1comment
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Symbol frequency
    Java Core, Level 8, Lesson 11
    Under discussion
    How to resolve this task?I tried to resolve this task in this way bacause i could not find online other way
    • 3/19/19
    • 1527views
    • 1comment
    0
  • Darshan SP
    Level 2
    Mysuru
    Under discussion
    task01 : task0127public class Solution { public static void main(String[] args) { //write your code here int b = sqr(5); System.out.println("the square of 5" +b); } public static int sqr(int a) { return a * a; } } please help that i did that program to work but failed
    • 3/20/19
    • 1630views
    • 3comments
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Finding data inside a file
    Java Core, Level 8, Lesson 11
    Under discussion
    What should i improve in my solution?need help
    • 3/20/19
    • 1306views
    • 1comment
    0
  • Ryan
    Level 14
    Ashburn
    Question about the task Longest string
    Java Syntax, Level 7, Lesson 6
    Archived
    Working But Req 3 Still FailsI have tested this program and it always displays the longest string(s). I also passed the display of multiple strings if multiple are longest, I am not sure how I can meet req 4 and not req 3. Below is the input (lines 1-5) and output (line 6) of the test another question was told to run: qwe qwe
    • 2/16/19
    • 2064views
    • 1comment
    1
  • Arko Sarkar
    Level 8
    Mumbai
    Question about the task Min and max in arrays
    Java Syntax, Level 7, Lesson 12
    Under discussion
    What is wrong here?For values 1 to 20, I'm getting output: 20 1 So what's the error?
    • 9/1/18
    • 2516views
    • 7comments
    0
  • Akash sah
    Level 8
    Kathmandu
    Question about the task Plan to conquer the world
    Java Syntax, Level 3, Lesson 8
    Under discussion
    where is the problemi cant find the mistake
    • 2/16/19
    • 1616views
    • 4comments
    0
  • jaime
    Level 5
    Barcelona
    Question about the task Crossing the road blindly
    Java Syntax, Level 4, Lesson 4
    Under discussion
    What is wrong? I really don't get it.What is wrong? I really don't get it.
    • 2/6/19
    • 2229views
    • 5comments
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Notepad for new ideas
    Java Syntax, Level 6, Lesson 11
    Under discussion
    i do not know how to resolve 3rd pointneed help
    • 1/8/19
    • 2069views
    • 5comments
    0
  • Derek
    Level 11
    Apex, NC
    Question about the task Rule of the triangle
    Java Syntax, Level 4, Lesson 4
    Resolved
    not passing 'verify', but seems to run correctly.Seems to work when I run, but not passing the 'verify' stage. Any ideas? package com.codegym.task.task04.task0415; /* Rule of the triangle "The triangle is possible." - if a triangle with these sides could exist. "The triangle is not possible." - if a triangle with these sides cannot exist. */
    • 3/19/19
    • 2213views
    • 1comment
    0
  • Andrew
    Level 29
    Seattle
    Question about the task Word search
    Java Core, Level 10, Lesson 10
    Resolved
    What am I missing?Any clues as to why it's not verifying? Also I can't think of a way to avoid all the repeated code. Thoughts?
    • 3/19/19
    • 1662views
    • 1comment
    0
  • Wojtek
    Level 23
    Solec-Zdroj
    Question about the task Reversing a file
    Java Core, Level 8, Lesson 5
    Under discussion
    Can you give me some hint how to reverse order properly?need help
    • 3/13/19
    • 2327views
    • 1comment
    0
  • Douglas
    Level 4
    Kano
    Question about the task As simple as 2+2
    Java Syntax, Level 1, Lesson 8
    Under discussion
    need explanation task01.task0128 - As simple as 2+2 pleas explain this task. thanks.
    • 3/17/19
    • 1445views
    • 1comment
    0
  • Aakash potepalli
    Level 22
    Bangalore
    Under discussion
    what does this mean (A constructor has no type) ?i am not able to understand this line please help me A constructor has no type.
    • 3/18/19
    • 1470views
    • 1comment
    0
  • Lox Loxyms
    Level 19
    Lodz
    Under discussion
    IntelliJ IDEA - is it optionalHello, Is it necessary to use IntelliJ IDEA software? I learn with CodeGym on company's computer and have no possibility to install any software. Will I miss a lot if I don't use IntelliJ IDEA? Are some tasks only present in IntelliJ IDEA ?
    • 3/19/19
    • 1893views
    • 5comments
    0
  • Kisszol
    Level 15
    Toeroekbalint
    Question about the task Kind Emma and the summer holidays
    Java Syntax, Level 8, Lesson 8
    Resolved
    Helpu min, please help meEsperanto: Mi havas problemon. La ciklo el linio 40 al linio 49 sxaltas en la linio 46 unufoje, kaj ne ne plu. La programo forigas nur unu linion el "map" strukturo ne tri. Mi ne komprenas kial. English: I have a problem. The cycle from line 40 to 49 jumps into the line 46 only once. The prog
    • 3/19/19
    • 2335views
    • 4comments
    0
  • Ovo Leslie
    Level 26
    Lagos
    Question about the task Rule of the triangle
    Java Syntax, Level 4, Lesson 4
    Resolved
    Error with input codeI can't seem to get my input codes right for my last two task. Its giving me this error But it works on Intelli J I DEA. However on Intelli J IDEA, I can't run any current task. Anytime i click run Task03\03 ends up running no matter what I do. Coding today had been frustrating. Help needed!
    • 2/12/19
    • 1643views
    • 5comments
    0
  • Fadi AlSaidi
    Level 13
    Carrollton
    Question about the task Who's that smarty?
    Java Core, Level 3, Lesson 2
    Archived
    Hmmm , no uproar from the ladies over this task!!!!!anyone?
    • 3/1/19
    • 2033views
    • 1comment
    0
  • Jerry
    Level 1
    Cape Town
    Under discussion
    2 plus 3 is equal to 5I have been trying to complete this task, but am struggling to view the task, so as to continue with it - please help.
    • 2/28/19
    • 1211views
    • 1comment
    0
  • Anonymous #10422934
    Level 5
    Question about the task Expressing ourselves more concisely
    Java Syntax, Level 7, Lesson 6
    Archived
    Code works, does not validate req#4Hi! :) Any ideas whats wrong with this? :) I have no clue at this point. The "If several strings are the shortest, then you need to display each of them on a new line." While running it works just fine as required.
    • 3/18/19
    • 1762views
    • 5comments
    0
  • Jeff Jeffy
    Level 15
    Irvine
    Question about the task A name is a name
    Java Syntax, Level 4, Lesson 16
    Resolved
    WHERE IS THE TYPOI dont see it. Am I blind?
    • 3/19/19
    • 2063views
    • 1comment
    0
  • past cham
    Level 6
    Delhi
    Question about the task Closest to 10
    Java Syntax, Level 4, Lesson 4
    Resolved
    help to solvehow to solve
    • 3/18/19
    • 1581views
    • 2comments
    0
  • Nitin
    Level 5
    Question about the task Adding
    Java Syntax, Level 4, Lesson 16
    Under discussion
    Help!
    • 3/12/19
    • 1716views
    • 5comments
    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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