Page 114 | CodeGym online Java course - Help

Andrei
Level 41
Question about the task Static modifiers and exceptions
Java Core, Level 5, Lesson 9
Under discussion
What is this task trying to teach us? I don't understand the use of the IF clause to pass the verification - throw/throwing exception in static block Hello! Can somebody please explain why we need an if clause for the program to verify? Why isn't the error just thrown when we run the code? Thanks
12/7/20
753views
8comments
0
Andrei
Level 41
Question about the task Static modifiers: part 1
Java Core, Level 5, Lesson 9
Resolved
Creating a static block and putting inside elements of an future created map. How is this possible?Hello, so we have the program below. The static block is last. Upon creation of the class, from my knowledge the first elements that will be created are static variables and static blocks of code. My question is, considering that the static block of code will be created before the map element, how
12/7/20
650views
8comments
0
Weichen Ouyang
Level 25
San Jose
Question about the task Different methods for different types
Java Core, Level 5, Lesson 12
Resolved
My code works, however, I would like to receive critiques from you guys.Is there other possible structure to implement the same functionality? Here is my code: public static void main(String[] args) throws IOException { BufferedReader r = new BufferedReader(new InputStreamReader(System.in)); while(true){ String s = r.readLine(); i
9/6/19
1685views
2comments
4
Denis
Level 22
Kharkiv
Question about the task Static modifiers and exceptions
Java Core, Level 5, Lesson 9
Under discussion
help me pls cant understand
6/26/19
1751views
4comments
0
Bohdan
Level 8
Milan
Question about the task Snake (Part 19/20)
Games, Level 0, Lesson 1
Resolved
I have a bug.I completed all the quests, but it doesn't accept the last one, where i have to setTurnTimer in the method onTurn.
9/3/20
650views
3comments
0
Aditya Sinha
Level 17
Bangalore
Question about the task Static modifiers: part 1
Java Core, Level 5, Lesson 9
Resolved
Help with the solution Not able to figure the problem
2/17/19
1644views
2comments
0
Michał Pawłowicz
Level 18
Question about the task The early bird gets the worm
Java Core, Level 6, Lesson 13
Under discussion
Can't match the first requirement, help please I've tried also with the currentThread, and it still is not checked as correct, I have no idea what should i change. I'll appreciate any sort of help. Thank you from the mountain.
4/18/20
1402views
3comments
0
Stephen Haokip
Level 8
imphal
Question about the task Method quartet
Java Syntax, Level 8, Lesson 6
Resolved
guy the last second condition is left i have no idea how to do it please need help
6/23/20
1407views
3comments
1
The Chief
Level 18
Question about the task Display numbers in reverse order
Java Syntax, Level 7, Lesson 12
Under discussion
The compiler says it can't find the ArrayList symbol.On line 17, the compiler says it can't find the ArrayList symbol. I don't understand why.
12/5/20
678views
2comments
0
Dmitri
Level 22
Seversk
Question about the task Fix four mistakes
Java Core, Level 4, Lesson 8
Resolved
Looks like all requirements are fulfilled.Looks like all requirements are fulfilled. What am I missing?
12/6/20
565views
1comment
0
Angelo Spampinato
Level 18
Boston
Question about the task Request parser
Java Core, Level 5, Lesson 12
Under discussion
Not sure why the 3rd condition isn't passing Could anyone help me figure it out? Both examples they gave are displaying exactly as they should. Thanks!
7/21/20
635views
1comment
0
Denys Pits
Level 41
Question about the task Synchronized methods
Java Core, Level 7, Lesson 10
Under discussion
Why 4???Why it is necessary to add synchronized to method4, but not to method5?
12/5/20
556views
1comment
0
liutas
Level 5
Priekule
Question about the task 18+
Java Syntax, Level 4, Lesson 6
Under discussion
Why when i press RUN nothing happens ? no error in the code package com.codegym.task.task04.task0422; /* 18+ */ import java.io.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { Scanner scan = new Scanner(System.in); String name = scan.nextLine(); int age
12/5/20
627views
1comment
0
Chandan Thapa
Level 22
Dubai
Question about the task Different methods for different types
Java Core, Level 5, Lesson 12
Resolved
got the correct answer however not passing the requirements What am I doing wrong below? hints would be great!! Thanks :)
12/4/20
630views
6comments
0
hidden #10687429
Level 6
Question about the task Rule of the triangle
Java Syntax, Level 4, Lesson 4
Under discussion
Won't validate and I don't understand why I've tested my work and it seems to work fine but won't validate. The first condition rules it out if it's == The second rules in those whose sums are greater than the part
12/5/20
619views
2comments
0
Harshitha
Level 5
Chennai
Question about the task Sam I Am
Java Syntax, Level 3, Lesson 6
Resolved
Sam I Am Can anyone tell me what is wrong in my code.
7/10/20
948views
2comments
1
Шарох
Level 12
Question about the task Calling a constructor from a constructor
Java Syntax, Level 5, Lesson 9
Resolved
Hi Coders! I don't know how should I call another constructor?
11/11/20
1138views
7comments
0
thisisalongname
Level 15
Spokane
Question about the task Price of apples
Java Syntax, Level 4, Lesson 1
Under discussion
Question on the Difference I figured it out after a while, but can someone explain why in this example "Apple.applePrice" works and "this.applePrice" doesn't? I'm sure it has to do with the difference in static and non-static but I don't understand it. public class Solution { public static void main(String[] args) {
4/23/19
1668views
2comments
1
Arko Sarkar
Level 8
Mumbai
Question about the task Price of apples
Java Syntax, Level 4, Lesson 1
Under discussion
Why this.applesPrice doesn't work here?I've figured out the answer by hints here, but want to know why 'this' doesn't work?
8/25/18
2006views
3comments
2
LennyMan
Level 25
Lucca
Question about the task Arithmetic mean
Java Syntax, Level 5, Lesson 5
Resolved
All the condition works, but last one cannot be validate The code its working, but it can't be validate by the last condition (The displayed result should match the task conditions for any input data.) I dont understand where is the problem. i just notice that if you start with -1, the result is NaN. I dont know what this mean actually.
12/3/20
902views
3comments
0
divya
Level 5
hyderabad
Question about the task A name is a name
Java Syntax, Level 4, Lesson 16
Under discussion
can anyone help me at this line of code System.out.println("I was born on "+mm++dd+\/+yyyy);
12/3/18
1823views
16comments
0
Aleksandr
Level 22
Moscow
Question about the task Sorting even numbers from a file
Java Core, Level 3, Lesson 11
Resolved
Hello all, As i think i did what task wants but it didn't work I go trhow file by bites if it is char between 48 -57 i add it in to string and than check, if line finished by (13) i check is number even? yes add to arr. Than sort array and show it on display. All works, but task don't accepted it. Can you help please?
12/2/20
737views
4comments
0
Jurij Thmsn
Level 29
Flensburg
Question about the task Plan to conquer the world
Java Syntax, Level 3, Lesson 8
Resolved
Task in IntelliJ I got the code right so it works in the browser and is correct . But if I run the same code on IntelliJ, the program just says: /Users/test/Desktop/jdk-15.0.1.jdk/Contents/Home/bin/java -javaagent:/Applications/IntelliJ IDEA CE.app/Contents/lib/idea_rt.jar=63276:/Applications/IntelliJ IDEA CE.app/Co
12/2/20
896views
4comments
0
Andrei
Level 41
Question about the task Food
Java Core, Level 4, Lesson 4
Resolved
Can somebody please explain this line: " Selectable selectable = new Food(); " ?Below is the program. But please clarify for me the line in the subject? It the new Food() selectable object part of Selectable interface? I thought you can't instantiate an interface? public class Solution { public static void main(String[] args) { Food food = new Food(); Sel
12/1/20
731views
3comments
0
Talia Mullen-Humphreys
Level 11
Radcliffe
Question about the task HashMap of 10 pairs
Java Syntax, Level 8, Lesson 3
Under discussion
What does the error I keep getting mean?It's something to do with the .put method.
5/22/20
927views
2comments
0
Andrei
Level 41
Question about the task Chicken factory
Java Core, Level 4, Lesson 6
Resolved
Welp getDescription() apparently not implemented correctly. Why? Creating a separate object and printing getDescription works as requested.
12/2/20
623views
3comments
0
yuqin luo
Level 16
Singapore
Question about the task Man and woman
Java Syntax, Level 5, Lesson 12
Under discussion
Why the constructors does not work?public class Solution { public static void main(String[] args) { Man m = new Man("J", 10, "sdhf"); Man m2 = new Man("J", 10, "sdhf"); Woman w = new Woman("J", 10, "sdhf"); Woman w2 = new Woman("J", 10, "sdhf"); System.out.println(m.name + " " + m.age + "
12/2/20
614views
1comment
0
anupam jha
Level 7
Question about the task Mercantile intentions
Java Syntax, Level 3, Lesson 12
Under discussion
for loop? why to use for loop here? without any tutorials on it? use system.out.println rrquired number of times to get the result???
12/2/20
601views
1comment
0
anupam jha
Level 7
Question about the task Hello, StarCraft!
Java Syntax, Level 3, Lesson 4
Under discussion
one doubt...in my opinion.zerg1 is the name of the Zerg object.whats the point in having the code.zerg1.name???? or may b i dnt understand it welll.. clear my doubt.Thanks.
12/2/20
639views
1comment
0
Lawson
Level 29
Lagos
Question about the task Chat (part 15)
Java Multithreading, Level 6, Lesson 15
Resolved
Pls help How else do I call the notify method on the client object
10/7/20
625views
1comment
0

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